

<!--XBRL Document Created with Wdesk from Workiva, formerly WebFilings-->
<!-- -->
<linkbase xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns="http://www.xbrl.org/2003/linkbase" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <roleRef roleURI="http://www.usa.autodesk.com/role/AccumulatedOtherComprehensiveIncomeLoss" xlink:href="adsk-20141031.xsd#AccumulatedOtherComprehensiveIncomeLoss" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/AccumulatedOtherComprehensiveIncomeLossDetails" xlink:href="adsk-20141031.xsd#AccumulatedOtherComprehensiveIncomeLossDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/AccumulatedOtherComprehensiveIncomeLossTables" xlink:href="adsk-20141031.xsd#AccumulatedOtherComprehensiveIncomeLossTables" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/Acquisitions" xlink:href="adsk-20141031.xsd#Acquisitions" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/AcquisitionsAcquisitionDetails" xlink:href="adsk-20141031.xsd#AcquisitionsAcquisitionDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/AcquisitionsAcquisitionsTables" xlink:href="adsk-20141031.xsd#AcquisitionsAcquisitionsTables" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/AcquisitionsSummaryOfFairValueOfAssetsAcquiredAndLiabilitiesAssumedByMajorClassDetails" xlink:href="adsk-20141031.xsd#AcquisitionsSummaryOfFairValueOfAssetsAcquiredAndLiabilitiesAssumedByMajorClassDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/BasisOfPresentation" xlink:href="adsk-20141031.xsd#BasisOfPresentation" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/BasisOfPresentationPolicies" xlink:href="adsk-20141031.xsd#BasisOfPresentationPolicies" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/BasisOfPresentationReclassificationDetails" xlink:href="adsk-20141031.xsd#BasisOfPresentationReclassificationDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/BasisOfPresentationTables" xlink:href="adsk-20141031.xsd#BasisOfPresentationTables" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/BorrowingArrangements" xlink:href="adsk-20141031.xsd#BorrowingArrangements" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/BorrowingArrangementsAdditionalInformationDetails" xlink:href="adsk-20141031.xsd#BorrowingArrangementsAdditionalInformationDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/CommitmentsAndContingencies" xlink:href="adsk-20141031.xsd#CommitmentsAndContingencies" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/CommonStockRepurchaseProgram" xlink:href="adsk-20141031.xsd#CommonStockRepurchaseProgram" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/CommonStockRepurchaseProgramAdditionalInformationDetails" xlink:href="adsk-20141031.xsd#CommonStockRepurchaseProgramAdditionalInformationDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/ComputerEquipmentSoftwareFurnitureAndLeaseholdImprovementsNet" xlink:href="adsk-20141031.xsd#ComputerEquipmentSoftwareFurnitureAndLeaseholdImprovementsNet" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/ComputerEquipmentSoftwareFurnitureAndLeaseholdImprovementsNetDetails" xlink:href="adsk-20141031.xsd#ComputerEquipmentSoftwareFurnitureAndLeaseholdImprovementsNetDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/ComputerEquipmentSoftwareFurnitureAndLeaseholdImprovementsNetTables" xlink:href="adsk-20141031.xsd#ComputerEquipmentSoftwareFurnitureAndLeaseholdImprovementsNetTables" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/ConcentrationOfCreditRisk" xlink:href="adsk-20141031.xsd#ConcentrationOfCreditRisk" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/ConcentrationOfCreditRiskAdditionalInformationDetails" xlink:href="adsk-20141031.xsd#ConcentrationOfCreditRiskAdditionalInformationDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/CondensedConsolidatedBalanceSheets" xlink:href="adsk-20141031.xsd#CondensedConsolidatedBalanceSheets" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/CondensedConsolidatedStatementsOfCashFlows" xlink:href="adsk-20141031.xsd#CondensedConsolidatedStatementsOfCashFlows" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/CondensedConsolidatedStatementsOfComprehensiveIncome" xlink:href="adsk-20141031.xsd#CondensedConsolidatedStatementsOfComprehensiveIncome" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/CondensedConsolidatedStatementsOfComprehensiveIncomeParenthetical" xlink:href="adsk-20141031.xsd#CondensedConsolidatedStatementsOfComprehensiveIncomeParenthetical" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/CondensedConsolidatedStatementsOfOperations" xlink:href="adsk-20141031.xsd#CondensedConsolidatedStatementsOfOperations" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/DeferredCompensation" xlink:href="adsk-20141031.xsd#DeferredCompensation" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/DeferredCompensationAdditionalInformationDetails" xlink:href="adsk-20141031.xsd#DeferredCompensationAdditionalInformationDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/DocumentAndEntityInformation" xlink:href="adsk-20141031.xsd#DocumentAndEntityInformation" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/FinancialInstruments" xlink:href="adsk-20141031.xsd#FinancialInstruments" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/FinancialInstrumentsAvailableForSaleSecuritiesGainLossActivityDetails" xlink:href="adsk-20141031.xsd#FinancialInstrumentsAvailableForSaleSecuritiesGainLossActivityDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/FinancialInstrumentsContractualMaturitiesOfTypesOfSecuritiesDetails" xlink:href="adsk-20141031.xsd#FinancialInstrumentsContractualMaturitiesOfTypesOfSecuritiesDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/FinancialInstrumentsCostAndFairValueOfFinancialInstrumentsDetails" xlink:href="adsk-20141031.xsd#FinancialInstrumentsCostAndFairValueOfFinancialInstrumentsDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/FinancialInstrumentsEffectsOfDerivativeInstrumentsOnCondensedConsolidatedStatementsOfOperationsDetails" xlink:href="adsk-20141031.xsd#FinancialInstrumentsEffectsOfDerivativeInstrumentsOnCondensedConsolidatedStatementsOfOperationsDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/FinancialInstrumentsFairValueOfDerivativeInstrumentsDetails" xlink:href="adsk-20141031.xsd#FinancialInstrumentsFairValueOfDerivativeInstrumentsDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/FinancialInstrumentsReconciliationOfChangeInLevel3ItemsDetails" xlink:href="adsk-20141031.xsd#FinancialInstrumentsReconciliationOfChangeInLevel3ItemsDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/FinancialInstrumentsTables" xlink:href="adsk-20141031.xsd#FinancialInstrumentsTables" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/Goodwill" xlink:href="adsk-20141031.xsd#Goodwill" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/GoodwillChangesInCarryingAmountOfGoodwillDetails" xlink:href="adsk-20141031.xsd#GoodwillChangesInCarryingAmountOfGoodwillDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/GoodwillTables" xlink:href="adsk-20141031.xsd#GoodwillTables" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/IncomeTax" xlink:href="adsk-20141031.xsd#IncomeTax" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/IncomeTaxIncomeTaxDetails" xlink:href="adsk-20141031.xsd#IncomeTaxIncomeTaxDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/NetIncomePerShare" xlink:href="adsk-20141031.xsd#NetIncomePerShare" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/NetIncomePerShareAdditionalInformationDetails" xlink:href="adsk-20141031.xsd#NetIncomePerShareAdditionalInformationDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/NetIncomePerShareTables" xlink:href="adsk-20141031.xsd#NetIncomePerShareTables" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/OtherIntangibleAssetsAndRelatedAccumulatedAmortizationDetails" xlink:href="adsk-20141031.xsd#OtherIntangibleAssetsAndRelatedAccumulatedAmortizationDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/OtherIntangibleAssetsNet" xlink:href="adsk-20141031.xsd#OtherIntangibleAssetsNet" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/OtherIntangibleAssetsNetTables" xlink:href="adsk-20141031.xsd#OtherIntangibleAssetsNetTables" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/RecentlyIssuedAccountingStandards" xlink:href="adsk-20141031.xsd#RecentlyIssuedAccountingStandards" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/Restructuring" xlink:href="adsk-20141031.xsd#Restructuring" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/RestructuringDetails" xlink:href="adsk-20141031.xsd#RestructuringDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/RestructuringTables" xlink:href="adsk-20141031.xsd#RestructuringTables" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/Segments" xlink:href="adsk-20141031.xsd#Segments" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/SegmentsConcerningOperationsOfReportableSegmentsDetails" xlink:href="adsk-20141031.xsd#SegmentsConcerningOperationsOfReportableSegmentsDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/SegmentsInformationRegardingOperationsByGeographicAreaDetails" xlink:href="adsk-20141031.xsd#SegmentsInformationRegardingOperationsByGeographicAreaDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/SegmentsTables" xlink:href="adsk-20141031.xsd#SegmentsTables" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/StockBasedCompensationExpense" xlink:href="adsk-20141031.xsd#StockBasedCompensationExpense" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/StockBasedCompensationExpenseAssumptionUsedToEstimateFairValueOfStockBasedAwardsDetails" xlink:href="adsk-20141031.xsd#StockBasedCompensationExpenseAssumptionUsedToEstimateFairValueOfStockBasedAwardsDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/StockBasedCompensationExpenseIntrinsicValueOfOptionsExercisedAndWeightedAverageGrantDateFairValueOfStockOptionsGrantedDetails" xlink:href="adsk-20141031.xsd#StockBasedCompensationExpenseIntrinsicValueOfOptionsExercisedAndWeightedAverageGrantDateFairValueOfStockOptionsGrantedDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/StockBasedCompensationExpenseScheduleOfShareBasedCompensationOptionsActivityDetails" xlink:href="adsk-20141031.xsd#StockBasedCompensationExpenseScheduleOfShareBasedCompensationOptionsActivityDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/StockBasedCompensationExpenseStockBasedCompensationExpenseAdditionalInformationDetails" xlink:href="adsk-20141031.xsd#StockBasedCompensationExpenseStockBasedCompensationExpenseAdditionalInformationDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/StockBasedCompensationExpenseStockBasedCompensationExpenseDetails" xlink:href="adsk-20141031.xsd#StockBasedCompensationExpenseStockBasedCompensationExpenseDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/StockBasedCompensationExpenseSummaryOfRestrictedStockAwardAndRestrictedStockUnitActivityDetails" xlink:href="adsk-20141031.xsd#StockBasedCompensationExpenseSummaryOfRestrictedStockAwardAndRestrictedStockUnitActivityDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.usa.autodesk.com/role/StockBasedCompensationExpenseTables" xlink:href="adsk-20141031.xsd#StockBasedCompensationExpenseTables" xlink:type="simple" />
  <arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/all" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#all" xlink:type="simple" />
  <arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-default" xlink:type="simple" />
  <arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#dimension-domain" xlink:type="simple" />
  <arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/domain-member" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#domain-member" xlink:type="simple" />
  <arcroleRef arcroleURI="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:href="http://www.xbrl.org/2005/xbrldt-2005.xsd#hypercube-dimension" xlink:type="simple" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/AccumulatedOtherComprehensiveIncomeLoss" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/AccumulatedOtherComprehensiveIncomeLossDetails" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/AccumulatedOtherComprehensiveIncomeLossTables" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/Acquisitions" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/AcquisitionsAcquisitionDetails" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_0746151C475EEF52205EBEB7A8B0629D" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_2A1C91319AA14759B4AABEB7A8AF0794" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_0746151C475EEF52205EBEB7A8B0629D" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_2A1C91319AA14759B4AABEB7A8AF0794" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_28BFDCEBE9D961175460BEB7A8AFF6B6" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_2A1C91319AA14759B4AABEB7A8AF0794" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_28BFDCEBE9D961175460BEB7A8AFF6B6" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_D50D6825E2C78DA6A940BEB7A8AFECCB_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_28BFDCEBE9D961175460BEB7A8AFF6B6" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_D50D6825E2C78DA6A940BEB7A8AFECCB_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_D50D6825E2C78DA6A940BEB7A8AFECCB" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_28BFDCEBE9D961175460BEB7A8AFF6B6" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_D50D6825E2C78DA6A940BEB7A8AFECCB" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_ShotgunMember" xlink:label="loc_adsk_ShotgunMember_DE9702FD2FE3043FED17BEB7A8AFC0E6" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_D50D6825E2C78DA6A940BEB7A8AFECCB" xlink:to="loc_adsk_ShotgunMember_DE9702FD2FE3043FED17BEB7A8AFC0E6" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_WithinTechnologiesLimitedMember" xlink:label="loc_adsk_WithinTechnologiesLimitedMember_1593F54FADED1BE1BEEFBEB7A8AFB2A4" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_D50D6825E2C78DA6A940BEB7A8AFECCB" xlink:to="loc_adsk_WithinTechnologiesLimitedMember_1593F54FADED1BE1BEEFBEB7A8AFB2A4" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_DelcamMember" xlink:label="loc_adsk_DelcamMember_94665056E197878F7BC7BEB7A8B049BB" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_D50D6825E2C78DA6A940BEB7A8AFECCB" xlink:to="loc_adsk_DelcamMember_94665056E197878F7BC7BEB7A8B049BB" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SeriesOfIndividuallyImmaterialBusinessAcquisitionsMember" xlink:label="loc_us-gaap_SeriesOfIndividuallyImmaterialBusinessAcquisitionsMember_AF8ED849EDC8774D0006BEB7A8B0B345" xlink:type="locator" />
    <definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_D50D6825E2C78DA6A940BEB7A8AFECCB" xlink:to="loc_us-gaap_SeriesOfIndividuallyImmaterialBusinessAcquisitionsMember_AF8ED849EDC8774D0006BEB7A8B0B345" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_BusinessCombinationConsiderationTransferred1" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferred1_2DD80403173A8F23FE72BEB7A8B088A2" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_0746151C475EEF52205EBEB7A8B0629D" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferred1_2DD80403173A8F23FE72BEB7A8B088A2" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesGross" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesGross_E5E78DE7ACE92A0157B2BEB7A8B0CB21" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_0746151C475EEF52205EBEB7A8B0629D" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesGross_E5E78DE7ACE92A0157B2BEB7A8B0CB21" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_FairValueofOriginalConvertibleDebtInvestment" xlink:label="loc_adsk_FairValueofOriginalConvertibleDebtInvestment_90BF987B1E32DE2CDD03BEB7A8B01139" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_0746151C475EEF52205EBEB7A8B0629D" xlink:to="loc_adsk_FairValueofOriginalConvertibleDebtInvestment_90BF987B1E32DE2CDD03BEB7A8B01139" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount" xlink:label="loc_us-gaap_BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount_A4A8ED0B5F51F5D85B8DBEB7A8B0F844" xlink:type="locator" />
    <definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_0746151C475EEF52205EBEB7A8B0629D" xlink:to="loc_us-gaap_BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount_A4A8ED0B5F51F5D85B8DBEB7A8B0F844" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NumberOfBusinessesAcquired" xlink:label="loc_us-gaap_NumberOfBusinessesAcquired_DBA9C6830E1ED4A0CF4DBEB7A8B0279E" xlink:type="locator" />
    <definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_0746151C475EEF52205EBEB7A8B0629D" xlink:to="loc_us-gaap_NumberOfBusinessesAcquired_DBA9C6830E1ED4A0CF4DBEB7A8B0279E" xlink:type="arc" />
  </definitionLink>
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/AcquisitionsAcquisitionsTables" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/AcquisitionsSummaryOfFairValueOfAssetsAcquiredAndLiabilitiesAssumedByMajorClassDetails" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_4AF6BDB86730BF9DA1B2E2C66CA96A56" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_FB79E6CA4F15DD9AC87CE2C66CA8C4B2" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_4AF6BDB86730BF9DA1B2E2C66CA96A56" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_FB79E6CA4F15DD9AC87CE2C66CA8C4B2" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_CB8333D3E3736C9EA8AAE2C66CA80F49" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_FB79E6CA4F15DD9AC87CE2C66CA8C4B2" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_CB8333D3E3736C9EA8AAE2C66CA80F49" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_648DC8F6E21844BA10B1E2C66CA8ACF9_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_CB8333D3E3736C9EA8AAE2C66CA80F49" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_648DC8F6E21844BA10B1E2C66CA8ACF9_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_648DC8F6E21844BA10B1E2C66CA8ACF9" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_CB8333D3E3736C9EA8AAE2C66CA80F49" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_648DC8F6E21844BA10B1E2C66CA8ACF9" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_ShotgunMember" xlink:label="loc_adsk_ShotgunMember_40D5CCF12BB53E914F88E2C66CA8D65D" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_648DC8F6E21844BA10B1E2C66CA8ACF9" xlink:to="loc_adsk_ShotgunMember_40D5CCF12BB53E914F88E2C66CA8D65D" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_WithinTechnologiesLimitedMember" xlink:label="loc_adsk_WithinTechnologiesLimitedMember_B59106572A91F647D7D9E2C66CA898BE" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_648DC8F6E21844BA10B1E2C66CA8ACF9" xlink:to="loc_adsk_WithinTechnologiesLimitedMember_B59106572A91F647D7D9E2C66CA898BE" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_DelcamMember" xlink:label="loc_adsk_DelcamMember_F522C36116432AC492FEE2C66CA862AA" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_648DC8F6E21844BA10B1E2C66CA8ACF9" xlink:to="loc_adsk_DelcamMember_F522C36116432AC492FEE2C66CA862AA" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SeriesOfIndividuallyImmaterialBusinessAcquisitionsMember" xlink:label="loc_us-gaap_SeriesOfIndividuallyImmaterialBusinessAcquisitionsMember_DAB9C9B170AC16085465E2C66CA889E3" xlink:type="locator" />
    <definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_648DC8F6E21844BA10B1E2C66CA8ACF9" xlink:to="loc_us-gaap_SeriesOfIndividuallyImmaterialBusinessAcquisitionsMember_DAB9C9B170AC16085465E2C66CA889E3" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_92007EC97A6D8F99FBA3E2C66CA9E908" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_FB79E6CA4F15DD9AC87CE2C66CA8C4B2" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_92007EC97A6D8F99FBA3E2C66CA9E908" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_2AF9465FB1A2C94905B4E2C66CA921DF_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_92007EC97A6D8F99FBA3E2C66CA9E908" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_2AF9465FB1A2C94905B4E2C66CA921DF_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_2AF9465FB1A2C94905B4E2C66CA921DF" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_92007EC97A6D8F99FBA3E2C66CA9E908" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_2AF9465FB1A2C94905B4E2C66CA921DF" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DevelopedTechnologyRightsMember" xlink:label="loc_us-gaap_DevelopedTechnologyRightsMember_3D700D3193F8CA733845E2C66CA9EEB5" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_2AF9465FB1A2C94905B4E2C66CA921DF" xlink:to="loc_us-gaap_DevelopedTechnologyRightsMember_3D700D3193F8CA733845E2C66CA9EEB5" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_CustomerRelationshipsAndOtherNoncurrentIntangibleAssetsMember" xlink:label="loc_adsk_CustomerRelationshipsAndOtherNoncurrentIntangibleAssetsMember_056115DEDB46430CC6D9E2C66CA9B421" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_2AF9465FB1A2C94905B4E2C66CA921DF" xlink:to="loc_adsk_CustomerRelationshipsAndOtherNoncurrentIntangibleAssetsMember_056115DEDB46430CC6D9E2C66CA9B421" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_TradeNamesMember" xlink:label="loc_us-gaap_TradeNamesMember_44C79EF4A40E94C82D59E2C66CA94D9F" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_2AF9465FB1A2C94905B4E2C66CA921DF" xlink:to="loc_us-gaap_TradeNamesMember_44C79EF4A40E94C82D59E2C66CA94D9F" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_D2919B5F609CA99ABA4DE2C66CA9EE93" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_4AF6BDB86730BF9DA1B2E2C66CA96A56" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibles_D2919B5F609CA99ABA4DE2C66CA9EE93" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_2BB165727AE571D7F241E2C66CA913FD" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_4AF6BDB86730BF9DA1B2E2C66CA96A56" xlink:to="loc_us-gaap_Goodwill_2BB165727AE571D7F241E2C66CA913FD" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedDeferredRevenue" xlink:label="loc_adsk_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedDeferredRevenue_3C29AA63410FF1EE50BDE2C66CA9F26E" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_4AF6BDB86730BF9DA1B2E2C66CA96A56" xlink:to="loc_adsk_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedDeferredRevenue_3C29AA63410FF1EE50BDE2C66CA9F26E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilitiesNoncurrent" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilitiesNoncurrent_1BAE2345C18561E4B695E2C66CA9A284" xlink:type="locator" />
    <definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_4AF6BDB86730BF9DA1B2E2C66CA96A56" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilitiesNoncurrent_1BAE2345C18561E4B695E2C66CA9A284" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedNetExcludingIntangibleAssetsAndDeferrals" xlink:label="loc_adsk_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedNetExcludingIntangibleAssetsAndDeferrals_CE7E6EAC0B7D7E954377E2C66CA91393" xlink:type="locator" />
    <definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_4AF6BDB86730BF9DA1B2E2C66CA96A56" xlink:to="loc_adsk_BusinessCombinationRecognizedIdentifiableAssetsAcquiredandLiabilitiesAssumedNetExcludingIntangibleAssetsAndDeferrals_CE7E6EAC0B7D7E954377E2C66CA91393" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_2ED189252007551F8D36E2C66CA9B1D9" xlink:type="locator" />
    <definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_4AF6BDB86730BF9DA1B2E2C66CA96A56" xlink:to="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet_2ED189252007551F8D36E2C66CA9B1D9" xlink:type="arc" />
  </definitionLink>
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/BasisOfPresentation" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/BasisOfPresentationPolicies" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/BasisOfPresentationReclassificationDetails" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_BE320DCD837533455D468501DE71574F" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable" xlink:label="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_EDD219782D7B1215F7A28501DE71DC23" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_BE320DCD837533455D468501DE71574F" xlink:to="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_EDD219782D7B1215F7A28501DE71DC23" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis" xlink:label="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_C67E66B0152A2E1A05BB8501DE7149CF" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_EDD219782D7B1215F7A28501DE71DC23" xlink:to="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_C67E66B0152A2E1A05BB8501DE7149CF" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ChangeInAccountingPrincipleMember" xlink:label="loc_us-gaap_ChangeInAccountingPrincipleMember_6995B867AF15D74C04418501DE7112DB_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_C67E66B0152A2E1A05BB8501DE7149CF" xlink:to="loc_us-gaap_ChangeInAccountingPrincipleMember_6995B867AF15D74C04418501DE7112DB_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ChangeInAccountingPrincipleMember" xlink:label="loc_us-gaap_ChangeInAccountingPrincipleMember_6995B867AF15D74C04418501DE7112DB" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AdjustmentsForChangeInAccountingPrincipleAxis_C67E66B0152A2E1A05BB8501DE7149CF" xlink:to="loc_us-gaap_ChangeInAccountingPrincipleMember_6995B867AF15D74C04418501DE7112DB" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_ReclassificationofAmortizationOfIntangibleAssetsMember" xlink:label="loc_adsk_ReclassificationofAmortizationOfIntangibleAssetsMember_689B6BFD70973BE212358501DE7104CA" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ChangeInAccountingPrincipleMember_6995B867AF15D74C04418501DE7112DB" xlink:to="loc_adsk_ReclassificationofAmortizationOfIntangibleAssetsMember_689B6BFD70973BE212358501DE7104CA" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_GeneralAndAdministrativeExpense" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpense_F46F7B412B77E817BFA58501DE719FB4" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_BE320DCD837533455D468501DE71574F" xlink:to="loc_us-gaap_GeneralAndAdministrativeExpense_F46F7B412B77E817BFA58501DE719FB4" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AmortizationOfIntangibleAssets" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_39C30D2C3AA210D4842F8501DE72AF6C" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_BE320DCD837533455D468501DE71574F" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_39C30D2C3AA210D4842F8501DE72AF6C" xlink:type="arc" />
  </definitionLink>
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/BasisOfPresentationTables" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/BorrowingArrangements" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/BorrowingArrangementsAdditionalInformationDetails" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="loc_us-gaap_DebtInstrumentLineItems_03B8CDB485DABE698125BEB7A883AECD" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="loc_us-gaap_DebtInstrumentTable_6BEBA83B8DBE30888DF1BEB7A8823CE4" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DebtInstrumentLineItems_03B8CDB485DABE698125BEB7A883AECD" xlink:to="loc_us-gaap_DebtInstrumentTable_6BEBA83B8DBE30888DF1BEB7A8823CE4" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_353290B696CD3B7B81CFBEB7A882F787" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_6BEBA83B8DBE30888DF1BEB7A8823CE4" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_353290B696CD3B7B81CFBEB7A882F787" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_D2103FBD9CB0A3063E4DBEB7A8822735_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_353290B696CD3B7B81CFBEB7A882F787" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_D2103FBD9CB0A3063E4DBEB7A8822735_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_D2103FBD9CB0A3063E4DBEB7A8822735" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_353290B696CD3B7B81CFBEB7A882F787" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_D2103FBD9CB0A3063E4DBEB7A8822735" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SeniorNotesMember" xlink:label="loc_us-gaap_SeniorNotesMember_CEEB8A7380AEDE524D80BEB7A882FF80" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_D2103FBD9CB0A3063E4DBEB7A8822735" xlink:to="loc_us-gaap_SeniorNotesMember_CEEB8A7380AEDE524D80BEB7A882FF80" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="loc_us-gaap_DebtInstrumentAxis_5DCCD3AE533E4EBB6930BEB7A883785F" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DebtInstrumentTable_6BEBA83B8DBE30888DF1BEB7A8823CE4" xlink:to="loc_us-gaap_DebtInstrumentAxis_5DCCD3AE533E4EBB6930BEB7A883785F" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_E119FEA29DA4F3C7D87EBEB7A8834C9E_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DebtInstrumentAxis_5DCCD3AE533E4EBB6930BEB7A883785F" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_E119FEA29DA4F3C7D87EBEB7A8834C9E_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_E119FEA29DA4F3C7D87EBEB7A8834C9E" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DebtInstrumentAxis_5DCCD3AE533E4EBB6930BEB7A883785F" xlink:to="loc_us-gaap_DebtInstrumentNameDomain_E119FEA29DA4F3C7D87EBEB7A8834C9E" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_SeniorNotes2017Member" xlink:label="loc_adsk_SeniorNotes2017Member_AEF4311426E37A4CA207BED46111918D" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_E119FEA29DA4F3C7D87EBEB7A8834C9E" xlink:to="loc_adsk_SeniorNotes2017Member_AEF4311426E37A4CA207BED46111918D" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_SeniorNotes2022Member" xlink:label="loc_adsk_SeniorNotes2022Member_E41D6E88C0BF0FDA6F5ABED46148986A" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_E119FEA29DA4F3C7D87EBEB7A8834C9E" xlink:to="loc_adsk_SeniorNotes2022Member_E41D6E88C0BF0FDA6F5ABED46148986A" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_2A160DA20393071078B3BEB7A88363C4" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_03B8CDB485DABE698125BEB7A883AECD" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_2A160DA20393071078B3BEB7A88363C4" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_61C20A5122ED06EFE2D4BEB7A8837580" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_03B8CDB485DABE698125BEB7A883AECD" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_61C20A5122ED06EFE2D4BEB7A8837580" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ProceedsFromDebtNetOfIssuanceCosts" xlink:label="loc_us-gaap_ProceedsFromDebtNetOfIssuanceCosts_ACF4417D0590D345F94EBEB7A883F7A3" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_03B8CDB485DABE698125BEB7A883AECD" xlink:to="loc_us-gaap_ProceedsFromDebtNetOfIssuanceCosts_ACF4417D0590D345F94EBEB7A883F7A3" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DebtInstrumentUnamortizedDiscount" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscount_B61A13C8D9752B100764BEB7A883AAB2" xlink:type="locator" />
    <definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_03B8CDB485DABE698125BEB7A883AECD" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscount_B61A13C8D9752B100764BEB7A883AAB2" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DebtIssuanceCosts" xlink:label="loc_us-gaap_DebtIssuanceCosts_DFCF34C23B87F7D8FD1DBEB7A8846200" xlink:type="locator" />
    <definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_03B8CDB485DABE698125BEB7A883AECD" xlink:to="loc_us-gaap_DebtIssuanceCosts_DFCF34C23B87F7D8FD1DBEB7A8846200" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_DebtIssuanceRedemptionDiscountPremiumPercentageOfPrincipalAmount" xlink:label="loc_adsk_DebtIssuanceRedemptionDiscountPremiumPercentageOfPrincipalAmount_DFD60C2F495E526EC786BEB7A8849252" xlink:type="locator" />
    <definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_03B8CDB485DABE698125BEB7A883AECD" xlink:to="loc_adsk_DebtIssuanceRedemptionDiscountPremiumPercentageOfPrincipalAmount_DFD60C2F495E526EC786BEB7A8849252" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DebtInstrumentFairValue" xlink:label="loc_us-gaap_DebtInstrumentFairValue_BD6C790AD1AE6BD3ADE8BEB7A884B319" xlink:type="locator" />
    <definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_03B8CDB485DABE698125BEB7A883AECD" xlink:to="loc_us-gaap_DebtInstrumentFairValue_BD6C790AD1AE6BD3ADE8BEB7A884B319" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_4B57E0A81E6D21E15CBABEB7A8841F6B" xlink:type="locator" />
    <definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_03B8CDB485DABE698125BEB7A883AECD" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_4B57E0A81E6D21E15CBABEB7A8841F6B" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_LineOfCreditFacilityAdditionalBorrowingsAvailable" xlink:label="loc_adsk_LineOfCreditFacilityAdditionalBorrowingsAvailable_A79E768EDA322F08E675BEB7A8840329" xlink:type="locator" />
    <definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_03B8CDB485DABE698125BEB7A883AECD" xlink:to="loc_adsk_LineOfCreditFacilityAdditionalBorrowingsAvailable_A79E768EDA322F08E675BEB7A8840329" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LineOfCreditFacilityExpirationDate1" xlink:label="loc_us-gaap_LineOfCreditFacilityExpirationDate1_B6F09CB368443BBADFE3BEB7A884926A" xlink:type="locator" />
    <definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_03B8CDB485DABE698125BEB7A883AECD" xlink:to="loc_us-gaap_LineOfCreditFacilityExpirationDate1_B6F09CB368443BBADFE3BEB7A884926A" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LineOfCredit" xlink:label="loc_us-gaap_LineOfCredit_890C2EA6350413A81B08BEB7A8849C6D" xlink:type="locator" />
    <definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DebtInstrumentLineItems_03B8CDB485DABE698125BEB7A883AECD" xlink:to="loc_us-gaap_LineOfCredit_890C2EA6350413A81B08BEB7A8849C6D" xlink:type="arc" />
  </definitionLink>
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/CommitmentsAndContingencies" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/CommonStockRepurchaseProgram" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/CommonStockRepurchaseProgramAdditionalInformationDetails" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_EquityClassOfTreasuryStockLineItems" xlink:label="loc_us-gaap_EquityClassOfTreasuryStockLineItems_D10383B7BD40301C4D3EBEB7A86E2E80" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ClassOfTreasuryStockTable" xlink:label="loc_us-gaap_ClassOfTreasuryStockTable_B3A97F1AF9236D944602BEB7A86E566B" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_D10383B7BD40301C4D3EBEB7A86E2E80" xlink:to="loc_us-gaap_ClassOfTreasuryStockTable_B3A97F1AF9236D944602BEB7A86E566B" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareRepurchaseProgramAxis" xlink:label="loc_us-gaap_ShareRepurchaseProgramAxis_5FEF05744E2D5EFE7442BEB7A86EF71A" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ClassOfTreasuryStockTable_B3A97F1AF9236D944602BEB7A86E566B" xlink:to="loc_us-gaap_ShareRepurchaseProgramAxis_5FEF05744E2D5EFE7442BEB7A86EF71A" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareRepurchaseProgramDomain" xlink:label="loc_us-gaap_ShareRepurchaseProgramDomain_6B77077DCA44C1CADC7CBEB7A86E4863_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ShareRepurchaseProgramAxis_5FEF05744E2D5EFE7442BEB7A86EF71A" xlink:to="loc_us-gaap_ShareRepurchaseProgramDomain_6B77077DCA44C1CADC7CBEB7A86E4863_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareRepurchaseProgramDomain" xlink:label="loc_us-gaap_ShareRepurchaseProgramDomain_6B77077DCA44C1CADC7CBEB7A86E4863" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ShareRepurchaseProgramAxis_5FEF05744E2D5EFE7442BEB7A86EF71A" xlink:to="loc_us-gaap_ShareRepurchaseProgramDomain_6B77077DCA44C1CADC7CBEB7A86E4863" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_CommonStockRepurchaseProgramMember" xlink:label="loc_adsk_CommonStockRepurchaseProgramMember_4F7579836CA8539F6411BEB7A86EC641" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareRepurchaseProgramDomain_6B77077DCA44C1CADC7CBEB7A86E4863" xlink:to="loc_adsk_CommonStockRepurchaseProgramMember_4F7579836CA8539F6411BEB7A86EC641" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_F64423D0165B2327613FBEB7A86E9B0E" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ClassOfTreasuryStockTable_B3A97F1AF9236D944602BEB7A86E566B" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_F64423D0165B2327613FBEB7A86E9B0E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_F07A2A64155943962891BEB7A86E9B6D_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_F64423D0165B2327613FBEB7A86E9B0E" xlink:to="loc_us-gaap_EquityComponentDomain_F07A2A64155943962891BEB7A86E9B6D_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_F07A2A64155943962891BEB7A86E9B6D" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_F64423D0165B2327613FBEB7A86E9B0E" xlink:to="loc_us-gaap_EquityComponentDomain_F07A2A64155943962891BEB7A86E9B6D" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CommonStockMember" xlink:label="loc_us-gaap_CommonStockMember_865A1DD79F1D7CFE36FBBEB7A86EF170" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_F07A2A64155943962891BEB7A86E9B6D" xlink:to="loc_us-gaap_CommonStockMember_865A1DD79F1D7CFE36FBBEB7A86EF170" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RetainedEarningsMember" xlink:label="loc_us-gaap_RetainedEarningsMember_872CF9FF12CE9CF95478BEB7A86E7D10" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_F07A2A64155943962891BEB7A86E9B6D" xlink:to="loc_us-gaap_RetainedEarningsMember_872CF9FF12CE9CF95478BEB7A86E7D10" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodShares" xlink:label="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_21DAFC9E8CF291604FB9BEB7A86EC656" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_D10383B7BD40301C4D3EBEB7A86E2E80" xlink:to="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_21DAFC9E8CF291604FB9BEB7A86EC656" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_TreasuryStockAcquiredAverageCostPerShare" xlink:label="loc_us-gaap_TreasuryStockAcquiredAverageCostPerShare_04DC4DD284C453E8C60BBEB7A86E9CA1" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_D10383B7BD40301C4D3EBEB7A86E2E80" xlink:to="loc_us-gaap_TreasuryStockAcquiredAverageCostPerShare_04DC4DD284C453E8C60BBEB7A86E9CA1" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StockRepurchasedAndRetiredDuringPeriodValue" xlink:label="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_FF968A8B9E355D1E955EBEB7A86E9E93" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_D10383B7BD40301C4D3EBEB7A86E2E80" xlink:to="loc_us-gaap_StockRepurchasedAndRetiredDuringPeriodValue_FF968A8B9E355D1E955EBEB7A86E9E93" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased" xlink:label="loc_us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased_B05AD171A151C96355AFBEB7A86F9BB6" xlink:type="locator" />
    <definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityClassOfTreasuryStockLineItems_D10383B7BD40301C4D3EBEB7A86E2E80" xlink:to="loc_us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased_B05AD171A151C96355AFBEB7A86F9BB6" xlink:type="arc" />
  </definitionLink>
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/ComputerEquipmentSoftwareFurnitureAndLeaseholdImprovementsNet" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/ComputerEquipmentSoftwareFurnitureAndLeaseholdImprovementsNetDetails" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PropertyPlantAndEquipmentLineItems" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_9D1CA62BB85ED8F90191BEB7A88B9466" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_45EE536C6D67EBD2DE4CBEB7A88A009C" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_9D1CA62BB85ED8F90191BEB7A88B9466" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_45EE536C6D67EBD2DE4CBEB7A88A009C" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_5DBD61D6B07F26362B33BEB7A88B0781" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_45EE536C6D67EBD2DE4CBEB7A88A009C" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_5DBD61D6B07F26362B33BEB7A88B0781" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_147EA723FD1243CF68CABEB7A88B026F_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_5DBD61D6B07F26362B33BEB7A88B0781" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_147EA723FD1243CF68CABEB7A88B026F_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_147EA723FD1243CF68CABEB7A88B026F" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_5DBD61D6B07F26362B33BEB7A88B0781" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_147EA723FD1243CF68CABEB7A88B026F" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SoftwareDevelopmentMember" xlink:label="loc_us-gaap_SoftwareDevelopmentMember_1124D684933D71C60507BEB7A88B42A3" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_147EA723FD1243CF68CABEB7A88B026F" xlink:to="loc_us-gaap_SoftwareDevelopmentMember_1124D684933D71C60507BEB7A88B42A3" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ComputerEquipmentMember" xlink:label="loc_us-gaap_ComputerEquipmentMember_C79225805389CA4870E6BEB7A88B3BF8" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_147EA723FD1243CF68CABEB7A88B026F" xlink:to="loc_us-gaap_ComputerEquipmentMember_C79225805389CA4870E6BEB7A88B3BF8" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LandBuildingsAndImprovementsMember" xlink:label="loc_us-gaap_LandBuildingsAndImprovementsMember_FD42228709930D5CDE93BEB7A88BDD35" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_147EA723FD1243CF68CABEB7A88B026F" xlink:to="loc_us-gaap_LandBuildingsAndImprovementsMember_FD42228709930D5CDE93BEB7A88BDD35" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_FurnitureandEquipmentMember" xlink:label="loc_adsk_FurnitureandEquipmentMember_01AF161F1CA0DBE07A1EBEB7A88BF9CC" xlink:type="locator" />
    <definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_147EA723FD1243CF68CABEB7A88B026F" xlink:to="loc_adsk_FurnitureandEquipmentMember_01AF161F1CA0DBE07A1EBEB7A88BF9CC" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_5598388334CC14A81A00BEB7A88B8B45" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_9D1CA62BB85ED8F90191BEB7A88B9466" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_5598388334CC14A81A00BEB7A88B8B45" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_ABB87BD4573E9263E3D0BEB7A88B2BDA" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_9D1CA62BB85ED8F90191BEB7A88B9466" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_ABB87BD4573E9263E3D0BEB7A88B2BDA" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_57C091C4FD43FE400A1BBEB7A88B1E43" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_9D1CA62BB85ED8F90191BEB7A88B9466" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_57C091C4FD43FE400A1BBEB7A88B1E43" xlink:type="arc" />
  </definitionLink>
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/ComputerEquipmentSoftwareFurnitureAndLeaseholdImprovementsNetTables" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/ConcentrationOfCreditRisk" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/ConcentrationOfCreditRiskAdditionalInformationDetails" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ConcentrationRiskLineItems" xlink:label="loc_us-gaap_ConcentrationRiskLineItems_FABDEDE153190719427FBEB7A9177D56" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ConcentrationRiskTable" xlink:label="loc_us-gaap_ConcentrationRiskTable_07166FE4C4E146D1905FBEB7A9168054" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_FABDEDE153190719427FBEB7A9177D56" xlink:to="loc_us-gaap_ConcentrationRiskTable_07166FE4C4E146D1905FBEB7A9168054" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_A8C5AD84D1884D479FE3BEB7A9174E0C" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_07166FE4C4E146D1905FBEB7A9168054" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_A8C5AD84D1884D479FE3BEB7A9174E0C" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_7F23A4DEC1BA5C2A4287BEB7A9178354_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_A8C5AD84D1884D479FE3BEB7A9174E0C" xlink:to="loc_us-gaap_EquityComponentDomain_7F23A4DEC1BA5C2A4287BEB7A9178354_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_7F23A4DEC1BA5C2A4287BEB7A9178354" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_A8C5AD84D1884D479FE3BEB7A9174E0C" xlink:to="loc_us-gaap_EquityComponentDomain_7F23A4DEC1BA5C2A4287BEB7A9178354" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_TechDataMember" xlink:label="loc_adsk_TechDataMember_2300B08AC4D8A7D084EABEB7A9173F2E" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EquityComponentDomain_7F23A4DEC1BA5C2A4287BEB7A9178354" xlink:to="loc_adsk_TechDataMember_2300B08AC4D8A7D084EABEB7A9173F2E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis" xlink:label="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_0715544E5B5E5DF18CEDBEB7A9174039" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ConcentrationRiskTable_07166FE4C4E146D1905FBEB7A9168054" xlink:to="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_0715544E5B5E5DF18CEDBEB7A9174039" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ConcentrationRiskBenchmarkDomain" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_D11ECC85108434DFF738BEB7A917D291_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_0715544E5B5E5DF18CEDBEB7A9174039" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_D11ECC85108434DFF738BEB7A917D291_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ConcentrationRiskBenchmarkDomain" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_D11ECC85108434DFF738BEB7A917D291" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_0715544E5B5E5DF18CEDBEB7A9174039" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_D11ECC85108434DFF738BEB7A917D291" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AccountsReceivableMember" xlink:label="loc_us-gaap_AccountsReceivableMember_883C4276677BD5D05CA9BEB7A917DC5E" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain_D11ECC85108434DFF738BEB7A917D291" xlink:to="loc_us-gaap_AccountsReceivableMember_883C4276677BD5D05CA9BEB7A917DC5E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_B9DFB5636AF653D43666BEB7A917E74A" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_FABDEDE153190719427FBEB7A9177D56" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_B9DFB5636AF653D43666BEB7A917E74A" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_PercentageOfNetSales" xlink:label="loc_adsk_PercentageOfNetSales_697A01BDE55B3527F7D3BEB7A917C15A" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_FABDEDE153190719427FBEB7A9177D56" xlink:to="loc_adsk_PercentageOfNetSales_697A01BDE55B3527F7D3BEB7A917C15A" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ConcentrationRiskPercentage1" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1_1CC63D67060E917A7C08BEB7A9179248" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConcentrationRiskLineItems_FABDEDE153190719427FBEB7A9177D56" xlink:to="loc_us-gaap_ConcentrationRiskPercentage1_1CC63D67060E917A7C08BEB7A9179248" xlink:type="arc" />
  </definitionLink>
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/CondensedConsolidatedBalanceSheets" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/CondensedConsolidatedStatementsOfCashFlows" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/CondensedConsolidatedStatementsOfComprehensiveIncome" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/CondensedConsolidatedStatementsOfComprehensiveIncomeParenthetical" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/CondensedConsolidatedStatementsOfOperations" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/DeferredCompensation" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/DeferredCompensationAdditionalInformationDetails" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsLineItems" xlink:label="loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsLineItems_80943EBBDA37E3F1AD9A8501DE8A8902" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfDeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTitleOfIndividualAndByTypeOfDeferredCompensationTable" xlink:label="loc_us-gaap_ScheduleOfDeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTitleOfIndividualAndByTypeOfDeferredCompensationTable_D756D97B6866ECAFCD0F8501DE89991B" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsLineItems_80943EBBDA37E3F1AD9A8501DE8A8902" xlink:to="loc_us-gaap_ScheduleOfDeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTitleOfIndividualAndByTypeOfDeferredCompensationTable_D756D97B6866ECAFCD0F8501DE89991B" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <loc xlink:href="adsk-20141031.xsd#adsk_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisAxis" xlink:label="loc_adsk_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisAxis_13A24131FD108BF0B2A48501DE89211B" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfDeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTitleOfIndividualAndByTypeOfDeferredCompensationTable_D756D97B6866ECAFCD0F8501DE89991B" xlink:to="loc_adsk_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisAxis_13A24131FD108BF0B2A48501DE89211B" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisDomain" xlink:label="loc_adsk_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisDomain_B857A64DBDEE06DD1FF88501DE89B605_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_adsk_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisAxis_13A24131FD108BF0B2A48501DE89211B" xlink:to="loc_adsk_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisDomain_B857A64DBDEE06DD1FF88501DE89B605_default" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisDomain" xlink:label="loc_adsk_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisDomain_B857A64DBDEE06DD1FF88501DE89B605" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_adsk_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisAxis_13A24131FD108BF0B2A48501DE89211B" xlink:to="loc_adsk_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisDomain_B857A64DBDEE06DD1FF88501DE89B605" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_RabbiTrustMember" xlink:label="loc_adsk_RabbiTrustMember_DAF1880980433392DA6B8501DE8AC368" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_FairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisDomain_B857A64DBDEE06DD1FF88501DE89B605" xlink:to="loc_adsk_RabbiTrustMember_DAF1880980433392DA6B8501DE8AC368" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_MarketableSecurities" xlink:label="loc_us-gaap_MarketableSecurities_006557487C86ED02B2308501DE8AB53E" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsLineItems_80943EBBDA37E3F1AD9A8501DE8A8902" xlink:to="loc_us-gaap_MarketableSecurities_006557487C86ED02B2308501DE8AB53E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredCompensationLiabilityCurrentAndNoncurrent" xlink:label="loc_us-gaap_DeferredCompensationLiabilityCurrentAndNoncurrent_9A26BE7183A60970C38B8501DE8A6620" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsLineItems_80943EBBDA37E3F1AD9A8501DE8A8902" xlink:to="loc_us-gaap_DeferredCompensationLiabilityCurrentAndNoncurrent_9A26BE7183A60970C38B8501DE8A6620" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredCompensationLiabilityCurrent" xlink:label="loc_us-gaap_DeferredCompensationLiabilityCurrent_EAC38B184FA8FF8CC9B28501DE8ABFB9" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsLineItems_80943EBBDA37E3F1AD9A8501DE8A8902" xlink:to="loc_us-gaap_DeferredCompensationLiabilityCurrent_EAC38B184FA8FF8CC9B28501DE8ABFB9" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent" xlink:label="loc_us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent_05BA4B00B2A7267D51028501DE8A59C3" xlink:type="locator" />
    <definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsLineItems_80943EBBDA37E3F1AD9A8501DE8A8902" xlink:to="loc_us-gaap_DeferredCompensationLiabilityClassifiedNoncurrent_05BA4B00B2A7267D51028501DE8A59C3" xlink:type="arc" />
  </definitionLink>
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/DocumentAndEntityInformation" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/FinancialInstruments" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/FinancialInstrumentsAvailableForSaleSecuritiesGainLossActivityDetails" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/FinancialInstrumentsContractualMaturitiesOfTypesOfSecuritiesDetails" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/FinancialInstrumentsCostAndFairValueOfFinancialInstrumentsDetails" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_977CD55FFBBC79545F14E7FD5EA67E0F" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfAvailableForSaleSecuritiesTable" xlink:label="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_313468829B68C4099E81E7FD5E9FE111" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_977CD55FFBBC79545F14E7FD5EA67E0F" xlink:to="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_313468829B68C4099E81E7FD5E9FE111" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_5B08773EE792EFC67D1AE7FD5E9FFE8E" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_313468829B68C4099E81E7FD5E9FE111" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_5B08773EE792EFC67D1AE7FD5E9FFE8E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_C4E75F687EFA00F5FDD1E7FD5E9FECBA_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_5B08773EE792EFC67D1AE7FD5E9FFE8E" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_C4E75F687EFA00F5FDD1E7FD5E9FECBA_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_C4E75F687EFA00F5FDD1E7FD5E9FECBA" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_5B08773EE792EFC67D1AE7FD5E9FFE8E" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_C4E75F687EFA00F5FDD1E7FD5E9FECBA" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FairValueInputsLevel1Member" xlink:label="loc_us-gaap_FairValueInputsLevel1Member_2891A798E8B6E8660BB3E7FD5E9F852E" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_C4E75F687EFA00F5FDD1E7FD5E9FECBA" xlink:to="loc_us-gaap_FairValueInputsLevel1Member_2891A798E8B6E8660BB3E7FD5E9F852E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_2B7A46D3F877D5402632E7FD5E9FD08E" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_C4E75F687EFA00F5FDD1E7FD5E9FECBA" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_2B7A46D3F877D5402632E7FD5E9FD08E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FairValueInputsLevel3Member" xlink:label="loc_us-gaap_FairValueInputsLevel3Member_3B6A4E0ACC375DB90CE6E7FD5E9F507B" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_C4E75F687EFA00F5FDD1E7FD5E9FECBA" xlink:to="loc_us-gaap_FairValueInputsLevel3Member_3B6A4E0ACC375DB90CE6E7FD5E9F507B" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CashAndCashEquivalentsAxis" xlink:label="loc_us-gaap_CashAndCashEquivalentsAxis_42BE98973410FC618A19E7FD5E9F6BEF" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_313468829B68C4099E81E7FD5E9FE111" xlink:to="loc_us-gaap_CashAndCashEquivalentsAxis_42BE98973410FC618A19E7FD5E9F6BEF" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_DB95918CD0E898E89E3CE7FD5EA022DF_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_CashAndCashEquivalentsAxis_42BE98973410FC618A19E7FD5E9F6BEF" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_DB95918CD0E898E89E3CE7FD5EA022DF_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_DB95918CD0E898E89E3CE7FD5EA022DF" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_CashAndCashEquivalentsAxis_42BE98973410FC618A19E7FD5E9F6BEF" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_DB95918CD0E898E89E3CE7FD5EA022DF" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_BankTimeDepositsMember" xlink:label="loc_us-gaap_BankTimeDepositsMember_551E75165BE8C903E1BEE7FD5EA058DD" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_DB95918CD0E898E89E3CE7FD5EA022DF" xlink:to="loc_us-gaap_BankTimeDepositsMember_551E75165BE8C903E1BEE7FD5EA058DD" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CorporateBondSecuritiesMember" xlink:label="loc_us-gaap_CorporateBondSecuritiesMember_308F870B1F764CF896CFE7FD5EA097F2" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_DB95918CD0E898E89E3CE7FD5EA022DF" xlink:to="loc_us-gaap_CorporateBondSecuritiesMember_308F870B1F764CF896CFE7FD5EA097F2" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CommercialPaperMember" xlink:label="loc_us-gaap_CommercialPaperMember_BE7A2B9B2395C360978DE7FD5EA0EC8B" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_DB95918CD0E898E89E3CE7FD5EA022DF" xlink:to="loc_us-gaap_CommercialPaperMember_BE7A2B9B2395C360978DE7FD5EA0EC8B" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_USStatesAndPoliticalSubdivisionsMember" xlink:label="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_E477CE650A6791A43F56E7FD5EA06197" xlink:type="locator" />
    <definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_DB95918CD0E898E89E3CE7FD5EA022DF" xlink:to="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_E477CE650A6791A43F56E7FD5EA06197" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_MoneyMarketFundsMember" xlink:label="loc_us-gaap_MoneyMarketFundsMember_DD54C7FF8DD7AB1F7FBEE7FD5EA0185E" xlink:type="locator" />
    <definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_DB95918CD0E898E89E3CE7FD5EA022DF" xlink:to="loc_us-gaap_MoneyMarketFundsMember_DD54C7FF8DD7AB1F7FBEE7FD5EA0185E" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_OtherCashEquivalentsMember" xlink:label="loc_adsk_OtherCashEquivalentsMember_77EFDC1DE6052D3B9E56E7FD5EA0EB93" xlink:type="locator" />
    <definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalentsCashAndCashEquivalentsMember_DB95918CD0E898E89E3CE7FD5EA022DF" xlink:to="loc_adsk_OtherCashEquivalentsMember_77EFDC1DE6052D3B9E56E7FD5EA0EB93" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_9D6601794F00866D7401E7FD5EA00E22" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_313468829B68C4099E81E7FD5E9FE111" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_9D6601794F00866D7401E7FD5EA00E22" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_41D726B2356CA78F0D20E7FD5EA0AB29_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_9D6601794F00866D7401E7FD5EA00E22" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_41D726B2356CA78F0D20E7FD5EA0AB29_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_41D726B2356CA78F0D20E7FD5EA0AB29" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_9D6601794F00866D7401E7FD5EA00E22" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_41D726B2356CA78F0D20E7FD5EA0AB29" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShortTermInvestmentsMember" xlink:label="loc_us-gaap_ShortTermInvestmentsMember_E1C18C9FE76C39229B5EE7FD5EA0F652" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_41D726B2356CA78F0D20E7FD5EA0AB29" xlink:to="loc_us-gaap_ShortTermInvestmentsMember_E1C18C9FE76C39229B5EE7FD5EA0F652" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherLongTermInvestmentsMember" xlink:label="loc_us-gaap_OtherLongTermInvestmentsMember_8A22BE4927419F271002E7FD5EA513BC" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_41D726B2356CA78F0D20E7FD5EA0AB29" xlink:to="loc_us-gaap_OtherLongTermInvestmentsMember_8A22BE4927419F271002E7FD5EA513BC" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherAssetsMember" xlink:label="loc_us-gaap_OtherAssetsMember_EFB1432390650E2EB4F2E7FD5EA5E225" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_41D726B2356CA78F0D20E7FD5EA0AB29" xlink:to="loc_us-gaap_OtherAssetsMember_EFB1432390650E2EB4F2E7FD5EA5E225" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis" xlink:label="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_113A6E38EDAE6A16A1C0E7FD5EA60511" xlink:type="locator" />
    <definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesTable_313468829B68C4099E81E7FD5E9FE111" xlink:to="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_113A6E38EDAE6A16A1C0E7FD5EA60511" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain" xlink:label="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_8BA22C79D93B4482941BE7FD5EA61915_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_113A6E38EDAE6A16A1C0E7FD5EA60511" xlink:to="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_8BA22C79D93B4482941BE7FD5EA61915_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain" xlink:label="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_8BA22C79D93B4482941BE7FD5EA61915" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis_113A6E38EDAE6A16A1C0E7FD5EA60511" xlink:to="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_8BA22C79D93B4482941BE7FD5EA61915" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CommercialPaperNotIncludedWithCashAndCashEquivalentsMember" xlink:label="loc_us-gaap_CommercialPaperNotIncludedWithCashAndCashEquivalentsMember_B7BF1E467C089B4D3D69E7FD5EA629E6" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_8BA22C79D93B4482941BE7FD5EA61915" xlink:to="loc_us-gaap_CommercialPaperNotIncludedWithCashAndCashEquivalentsMember_B7BF1E467C089B4D3D69E7FD5EA629E6" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_BankTimeDepositsMember" xlink:label="loc_us-gaap_BankTimeDepositsMember_253199492B96F9B3E8E9E7FD5EA69598" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_8BA22C79D93B4482941BE7FD5EA61915" xlink:to="loc_us-gaap_BankTimeDepositsMember_253199492B96F9B3E8E9E7FD5EA69598" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CorporateDebtSecuritiesMember" xlink:label="loc_us-gaap_CorporateDebtSecuritiesMember_07955CB829E7C93BA2ACE7FD5EA6BB9E" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_8BA22C79D93B4482941BE7FD5EA61915" xlink:to="loc_us-gaap_CorporateDebtSecuritiesMember_07955CB829E7C93BA2ACE7FD5EA6BB9E" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_AgencyBondsMember" xlink:label="loc_adsk_AgencyBondsMember_A8EA4EBF5B15C7BEE122E7FD5EA6503C" xlink:type="locator" />
    <definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_8BA22C79D93B4482941BE7FD5EA61915" xlink:to="loc_adsk_AgencyBondsMember_A8EA4EBF5B15C7BEE122E7FD5EA6503C" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_USGovernmentAgenciesDebtSecuritiesMember" xlink:label="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_3171481DFD36FEADD989E7FD5EA6AAD2" xlink:type="locator" />
    <definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_8BA22C79D93B4482941BE7FD5EA61915" xlink:to="loc_us-gaap_USGovernmentAgenciesDebtSecuritiesMember_3171481DFD36FEADD989E7FD5EA6AAD2" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_USTreasuryBillSecuritiesMember" xlink:label="loc_us-gaap_USTreasuryBillSecuritiesMember_66E173288756797F61DFE7FD5EA607FD" xlink:type="locator" />
    <definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_8BA22C79D93B4482941BE7FD5EA61915" xlink:to="loc_us-gaap_USTreasuryBillSecuritiesMember_66E173288756797F61DFE7FD5EA607FD" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_USStatesAndPoliticalSubdivisionsMember" xlink:label="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_34313F742012E4AC46FDE7FD5EA6A3EB" xlink:type="locator" />
    <definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_8BA22C79D93B4482941BE7FD5EA61915" xlink:to="loc_us-gaap_USStatesAndPoliticalSubdivisionsMember_34313F742012E4AC46FDE7FD5EA6A3EB" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_OtherSecuritiesMember" xlink:label="loc_adsk_OtherSecuritiesMember_F2D167864B24E436E82BE7FD5EA6B3CB" xlink:type="locator" />
    <definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_MajorTypesOfDebtAndEquitySecuritiesDomain_8BA22C79D93B4482941BE7FD5EA61915" xlink:to="loc_adsk_OtherSecuritiesMember_F2D167864B24E436E82BE7FD5EA6B3CB" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_4795F317642820F8AC15E7FD5EA77FF3" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_977CD55FFBBC79545F14E7FD5EA67E0F" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_4795F317642820F8AC15E7FD5EA77FF3" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_CashAndCashEquivalentsFairValueDisclosure" xlink:label="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_60E0A89E2180ECFCF1A6E7FD5EA77C97" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_977CD55FFBBC79545F14E7FD5EA67E0F" xlink:to="loc_us-gaap_CashAndCashEquivalentsFairValueDisclosure_60E0A89E2180ECFCF1A6E7FD5EA77C97" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AvailableForSaleSecuritiesAmortizedCost" xlink:label="loc_us-gaap_AvailableForSaleSecuritiesAmortizedCost_E0B88CA7A0DF7A1A6D42E7FD5EA7DC36" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_977CD55FFBBC79545F14E7FD5EA67E0F" xlink:to="loc_us-gaap_AvailableForSaleSecuritiesAmortizedCost_E0B88CA7A0DF7A1A6D42E7FD5EA7DC36" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_AvailableforsaleSecuritiesAccumulatedGrossUnrealizedGainbeforeTax" xlink:label="loc_adsk_AvailableforsaleSecuritiesAccumulatedGrossUnrealizedGainbeforeTax_B37DAAA2713943C86289E7FD5EA7FB60" xlink:type="locator" />
    <definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_977CD55FFBBC79545F14E7FD5EA67E0F" xlink:to="loc_adsk_AvailableforsaleSecuritiesAccumulatedGrossUnrealizedGainbeforeTax_B37DAAA2713943C86289E7FD5EA7FB60" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_AvailableforsaleSecuritiesAccumulatedGrossUnrealizedLossbeforeTax" xlink:label="loc_adsk_AvailableforsaleSecuritiesAccumulatedGrossUnrealizedLossbeforeTax_CAC063AD6A99C01CEBCDE7FD5EA7D231" xlink:type="locator" />
    <definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_977CD55FFBBC79545F14E7FD5EA67E0F" xlink:to="loc_adsk_AvailableforsaleSecuritiesAccumulatedGrossUnrealizedLossbeforeTax_CAC063AD6A99C01CEBCDE7FD5EA7D231" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AvailableForSaleSecurities" xlink:label="loc_us-gaap_AvailableForSaleSecurities_D5D25C4F5306D14933FDE7FD5EA7B104" xlink:type="locator" />
    <definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_977CD55FFBBC79545F14E7FD5EA67E0F" xlink:to="loc_us-gaap_AvailableForSaleSecurities_D5D25C4F5306D14933FDE7FD5EA7B104" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_TradingSecuritiesShortTermInvestmentsAmortizedCost" xlink:label="loc_us-gaap_TradingSecuritiesShortTermInvestmentsAmortizedCost_60D110882179551A953DE7FD5EA7A331" xlink:type="locator" />
    <definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_977CD55FFBBC79545F14E7FD5EA67E0F" xlink:to="loc_us-gaap_TradingSecuritiesShortTermInvestmentsAmortizedCost_60D110882179551A953DE7FD5EA7A331" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_TradingSecuritiesAccumulatedGrossUnrealizedGainbeforeTax" xlink:label="loc_adsk_TradingSecuritiesAccumulatedGrossUnrealizedGainbeforeTax_A887CB15A415DE89F089E7FD5EA721F9" xlink:type="locator" />
    <definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_977CD55FFBBC79545F14E7FD5EA67E0F" xlink:to="loc_adsk_TradingSecuritiesAccumulatedGrossUnrealizedGainbeforeTax_A887CB15A415DE89F089E7FD5EA721F9" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_TradingSecuritiesAccumulatedGrossUnrealizedLossbeforeTax" xlink:label="loc_adsk_TradingSecuritiesAccumulatedGrossUnrealizedLossbeforeTax_4DF198CE3F2372FD6682E7FD5EA7C6E7" xlink:type="locator" />
    <definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_977CD55FFBBC79545F14E7FD5EA67E0F" xlink:to="loc_adsk_TradingSecuritiesAccumulatedGrossUnrealizedLossbeforeTax_4DF198CE3F2372FD6682E7FD5EA7C6E7" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_TradingSecurities" xlink:label="loc_us-gaap_TradingSecurities_38E5201F1CD4DB01BCAFE7FD5EA7E271" xlink:type="locator" />
    <definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_977CD55FFBBC79545F14E7FD5EA67E0F" xlink:to="loc_us-gaap_TradingSecurities_38E5201F1CD4DB01BCAFE7FD5EA7E271" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis" xlink:label="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_ECAA85F3EAD9F4483ADFE7FD5EA77471" xlink:type="locator" />
    <definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_977CD55FFBBC79545F14E7FD5EA67E0F" xlink:to="loc_us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_ECAA85F3EAD9F4483ADFE7FD5EA77471" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_AvailableforsaleDebtSecuritiesAccumulatedGrossUnrealizedGainbeforeTax" xlink:label="loc_adsk_AvailableforsaleDebtSecuritiesAccumulatedGrossUnrealizedGainbeforeTax_9CE6259A74200CFD603FE7FD5EA7B237" xlink:type="locator" />
    <definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_977CD55FFBBC79545F14E7FD5EA67E0F" xlink:to="loc_adsk_AvailableforsaleDebtSecuritiesAccumulatedGrossUnrealizedGainbeforeTax_9CE6259A74200CFD603FE7FD5EA7B237" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_AvailableforsaleDebtSecuritiesAccumulatedGrossUnrealizedLossbeforeTax" xlink:label="loc_adsk_AvailableforsaleDebtSecuritiesAccumulatedGrossUnrealizedLossbeforeTax_071E80F93114E7553477E7FD5EA7D66D" xlink:type="locator" />
    <definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_977CD55FFBBC79545F14E7FD5EA67E0F" xlink:to="loc_adsk_AvailableforsaleDebtSecuritiesAccumulatedGrossUnrealizedLossbeforeTax_071E80F93114E7553477E7FD5EA7D66D" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_ConvertibleDebtSecuritiesFairValueDisclosure" xlink:label="loc_adsk_ConvertibleDebtSecuritiesFairValueDisclosure_101BC171A5F61B465948E7FD5EA80759" xlink:type="locator" />
    <definitionArc order="14" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_977CD55FFBBC79545F14E7FD5EA67E0F" xlink:to="loc_adsk_ConvertibleDebtSecuritiesFairValueDisclosure_101BC171A5F61B465948E7FD5EA80759" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_DerivativeInstrumentsAndHedgesCarryingAmount" xlink:label="loc_adsk_DerivativeInstrumentsAndHedgesCarryingAmount_DD1C184F0173213CE9AEE7FD5EA862A6" xlink:type="locator" />
    <definitionArc order="15" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_977CD55FFBBC79545F14E7FD5EA67E0F" xlink:to="loc_adsk_DerivativeInstrumentsAndHedgesCarryingAmount_DD1C184F0173213CE9AEE7FD5EA862A6" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_DerivativeAssetsAccumulatedGrossUnrealizedGainbeforeTax" xlink:label="loc_adsk_DerivativeAssetsAccumulatedGrossUnrealizedGainbeforeTax_5E511416804CF5065C7AE7FD5EA83037" xlink:type="locator" />
    <definitionArc order="16" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_977CD55FFBBC79545F14E7FD5EA67E0F" xlink:to="loc_adsk_DerivativeAssetsAccumulatedGrossUnrealizedGainbeforeTax_5E511416804CF5065C7AE7FD5EA83037" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_DerivativeAssetsAccumulatedGrossUnrealizedLossbeforeTax" xlink:label="loc_adsk_DerivativeAssetsAccumulatedGrossUnrealizedLossbeforeTax_4DF20F7D98C5508AE908E7FD5EA8EBEB" xlink:type="locator" />
    <definitionArc order="17" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_977CD55FFBBC79545F14E7FD5EA67E0F" xlink:to="loc_adsk_DerivativeAssetsAccumulatedGrossUnrealizedLossbeforeTax_4DF20F7D98C5508AE908E7FD5EA8EBEB" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DerivativeAssets" xlink:label="loc_us-gaap_DerivativeAssets_47822C7EFE4D60F098E4E7FD5EA8F1AA" xlink:type="locator" />
    <definitionArc order="18" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_977CD55FFBBC79545F14E7FD5EA67E0F" xlink:to="loc_us-gaap_DerivativeAssets_47822C7EFE4D60F098E4E7FD5EA8F1AA" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_AmortizedCostSecurities" xlink:label="loc_adsk_AmortizedCostSecurities_8D5FF94A18C8CFF4E259E7FD5EA8875C" xlink:type="locator" />
    <definitionArc order="19" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_977CD55FFBBC79545F14E7FD5EA67E0F" xlink:to="loc_adsk_AmortizedCostSecurities_8D5FF94A18C8CFF4E259E7FD5EA8875C" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_InvestmentsAccumulatedGrossUnrealizedGainbeforeTax" xlink:label="loc_adsk_InvestmentsAccumulatedGrossUnrealizedGainbeforeTax_B84792900E50F85CE3C2E7FD5EA81891" xlink:type="locator" />
    <definitionArc order="20" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_977CD55FFBBC79545F14E7FD5EA67E0F" xlink:to="loc_adsk_InvestmentsAccumulatedGrossUnrealizedGainbeforeTax_B84792900E50F85CE3C2E7FD5EA81891" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_InvestmentsAccumulatedGrossUnrealizedLossbeforeTax" xlink:label="loc_adsk_InvestmentsAccumulatedGrossUnrealizedLossbeforeTax_E8018E9CA7E8A1205E22E7FD5EA84F83" xlink:type="locator" />
    <definitionArc order="21" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_977CD55FFBBC79545F14E7FD5EA67E0F" xlink:to="loc_adsk_InvestmentsAccumulatedGrossUnrealizedLossbeforeTax_E8018E9CA7E8A1205E22E7FD5EA84F83" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_FairValueAssetsMeasuredOnRecurringBasis" xlink:label="loc_adsk_FairValueAssetsMeasuredOnRecurringBasis_385E8CCBF7B20DC72453E7FD5EA83B85" xlink:type="locator" />
    <definitionArc order="22" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_977CD55FFBBC79545F14E7FD5EA67E0F" xlink:to="loc_adsk_FairValueAssetsMeasuredOnRecurringBasis_385E8CCBF7B20DC72453E7FD5EA83B85" xlink:type="arc" />
  </definitionLink>
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/FinancialInstrumentsEffectsOfDerivativeInstrumentsOnCondensedConsolidatedStatementsOfOperationsDetails" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossLineItems" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_9886D0981559E435E0288501DE9B1328" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_64EB6D20A1E79C7DE4D28501DE9A28CB" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_9886D0981559E435E0288501DE9B1328" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_64EB6D20A1E79C7DE4D28501DE9A28CB" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_6D49DC5FCA80DF63E3D58501DE9A51B7" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_64EB6D20A1E79C7DE4D28501DE9A28CB" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_6D49DC5FCA80DF63E3D58501DE9A51B7" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_A404A51FB525AED7B7A08501DE9A0C63_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_6D49DC5FCA80DF63E3D58501DE9A51B7" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_A404A51FB525AED7B7A08501DE9A0C63_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_A404A51FB525AED7B7A08501DE9A0C63" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_6D49DC5FCA80DF63E3D58501DE9A51B7" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_A404A51FB525AED7B7A08501DE9A0C63" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ForeignExchangeContractMember" xlink:label="loc_us-gaap_ForeignExchangeContractMember_6477D4DDE0ABE211FD648501DE9A1429" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_A404A51FB525AED7B7A08501DE9A0C63" xlink:to="loc_us-gaap_ForeignExchangeContractMember_6477D4DDE0ABE211FD648501DE9A1429" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_HedgingDesignationAxis" xlink:label="loc_us-gaap_HedgingDesignationAxis_5C9E65A15A650361103B8501DE9BD54D" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_64EB6D20A1E79C7DE4D28501DE9A28CB" xlink:to="loc_us-gaap_HedgingDesignationAxis_5C9E65A15A650361103B8501DE9BD54D" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_HedgingDesignationDomain" xlink:label="loc_us-gaap_HedgingDesignationDomain_E4FA547084D43244E4378501DE9B4295_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_5C9E65A15A650361103B8501DE9BD54D" xlink:to="loc_us-gaap_HedgingDesignationDomain_E4FA547084D43244E4378501DE9B4295_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_HedgingDesignationDomain" xlink:label="loc_us-gaap_HedgingDesignationDomain_E4FA547084D43244E4378501DE9B4295" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_5C9E65A15A650361103B8501DE9BD54D" xlink:to="loc_us-gaap_HedgingDesignationDomain_E4FA547084D43244E4378501DE9B4295" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DesignatedAsHedgingInstrumentMember" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_253DC1AE044E1D1532828501DE9B2252" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_E4FA547084D43244E4378501DE9B4295" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_253DC1AE044E1D1532828501DE9B2252" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NondesignatedMember" xlink:label="loc_us-gaap_NondesignatedMember_32BB00AA895B8DDC57B68501DE9BE07F" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_E4FA547084D43244E4378501DE9B4295" xlink:to="loc_us-gaap_NondesignatedMember_32BB00AA895B8DDC57B68501DE9BE07F" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncomeStatementLocationAxis" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_AE7183D322D188DE47C78501DE9B13CF" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossByHedgingRelationshipByIncomeStatementLocationByDerivativeInstrumentRiskTable_64EB6D20A1E79C7DE4D28501DE9A28CB" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_AE7183D322D188DE47C78501DE9B13CF" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncomeStatementLocationDomain" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_04BDB6607CD3A90122428501DE9BE0F9_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_AE7183D322D188DE47C78501DE9B13CF" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_04BDB6607CD3A90122428501DE9BE0F9_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncomeStatementLocationDomain" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_04BDB6607CD3A90122428501DE9BE0F9" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_AE7183D322D188DE47C78501DE9B13CF" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_04BDB6607CD3A90122428501DE9BE0F9" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SalesMember" xlink:label="loc_us-gaap_SalesMember_424A21A3D6296793D93D8501DE9BE9B9" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_04BDB6607CD3A90122428501DE9BE0F9" xlink:to="loc_us-gaap_SalesMember_424A21A3D6296793D93D8501DE9BE9B9" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OperatingExpenseMember" xlink:label="loc_us-gaap_OperatingExpenseMember_4543589E5D0FBE6E84858501DE9B6D12" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_04BDB6607CD3A90122428501DE9BE0F9" xlink:to="loc_us-gaap_OperatingExpenseMember_4543589E5D0FBE6E84858501DE9B6D12" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_InterestAndOtherIncomeExpenseNetMember" xlink:label="loc_adsk_InterestAndOtherIncomeExpenseNetMember_8F0A5F1EF7C0023A14308501DE9B250D" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_04BDB6607CD3A90122428501DE9BE0F9" xlink:to="loc_adsk_InterestAndOtherIncomeExpenseNetMember_8F0A5F1EF7C0023A14308501DE9B250D" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet_DDE467C3FB7AE5B5BD298501DE9B00DC" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_9886D0981559E435E0288501DE9B1328" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet_DDE467C3FB7AE5B5BD298501DE9B00DC" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet_F3F4B900239333B719CF8501DE9C43CD" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_9886D0981559E435E0288501DE9B1328" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet_F3F4B900239333B719CF8501DE9C43CD" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet" xlink:label="loc_us-gaap_DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet_4C294D42DD446E6CCBD88501DE9C5455" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_9886D0981559E435E0288501DE9B1328" xlink:to="loc_us-gaap_DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet_4C294D42DD446E6CCBD88501DE9C5455" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DerivativeGainLossOnDerivativeNet" xlink:label="loc_us-gaap_DerivativeGainLossOnDerivativeNet_24F4D84DFFC6A98A35058501DE9C05AF" xlink:type="locator" />
    <definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeInstrumentsGainLossLineItems_9886D0981559E435E0288501DE9B1328" xlink:to="loc_us-gaap_DerivativeGainLossOnDerivativeNet_24F4D84DFFC6A98A35058501DE9C05AF" xlink:type="arc" />
  </definitionLink>
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/FinancialInstrumentsFairValueOfDerivativeInstrumentsDetails" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DerivativesFairValueLineItems" xlink:label="loc_us-gaap_DerivativesFairValueLineItems_F4C27C67FDEBD2DF5FD081181B0948F2" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable" xlink:label="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_6B0429E98356054C3F6581181B02B1EF" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_F4C27C67FDEBD2DF5FD081181B0948F2" xlink:to="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_6B0429E98356054C3F6581181B02B1EF" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DerivativeInstrumentRiskAxis" xlink:label="loc_us-gaap_DerivativeInstrumentRiskAxis_983429D217D7BD05150B81181B08D05F" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_6B0429E98356054C3F6581181B02B1EF" xlink:to="loc_us-gaap_DerivativeInstrumentRiskAxis_983429D217D7BD05150B81181B08D05F" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_4E437AE45070A4EF2D4881181B087FDC_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_983429D217D7BD05150B81181B08D05F" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_4E437AE45070A4EF2D4881181B087FDC_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_4E437AE45070A4EF2D4881181B087FDC" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_DerivativeInstrumentRiskAxis_983429D217D7BD05150B81181B08D05F" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_4E437AE45070A4EF2D4881181B087FDC" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ForeignExchangeContractMember" xlink:label="loc_us-gaap_ForeignExchangeContractMember_3576DD915BD105AE4D6C81181B0807E7" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_4E437AE45070A4EF2D4881181B087FDC" xlink:to="loc_us-gaap_ForeignExchangeContractMember_3576DD915BD105AE4D6C81181B0807E7" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_HedgingDesignationAxis" xlink:label="loc_us-gaap_HedgingDesignationAxis_9E2CDB0989BCFDA8056281181B08B331" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_6B0429E98356054C3F6581181B02B1EF" xlink:to="loc_us-gaap_HedgingDesignationAxis_9E2CDB0989BCFDA8056281181B08B331" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_HedgingDesignationDomain" xlink:label="loc_us-gaap_HedgingDesignationDomain_1F1F0C608165A0E68AB881181B09C2A8_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_HedgingDesignationAxis_9E2CDB0989BCFDA8056281181B08B331" xlink:to="loc_us-gaap_HedgingDesignationDomain_1F1F0C608165A0E68AB881181B09C2A8_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_HedgingDesignationDomain" xlink:label="loc_us-gaap_HedgingDesignationDomain_1F1F0C608165A0E68AB881181B09C2A8" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_HedgingDesignationAxis_9E2CDB0989BCFDA8056281181B08B331" xlink:to="loc_us-gaap_HedgingDesignationDomain_1F1F0C608165A0E68AB881181B09C2A8" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DesignatedAsHedgingInstrumentMember" xlink:label="loc_us-gaap_DesignatedAsHedgingInstrumentMember_2EC9242E8F8432D64C3981181B092E02" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_1F1F0C608165A0E68AB881181B09C2A8" xlink:to="loc_us-gaap_DesignatedAsHedgingInstrumentMember_2EC9242E8F8432D64C3981181B092E02" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NondesignatedMember" xlink:label="loc_us-gaap_NondesignatedMember_905FACACDBD85C60F5EF81181B09A342" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_HedgingDesignationDomain_1F1F0C608165A0E68AB881181B09C2A8" xlink:to="loc_us-gaap_NondesignatedMember_905FACACDBD85C60F5EF81181B09A342" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="loc_us-gaap_BalanceSheetLocationAxis_1382FADE9778EBAA013D81181B09AB52" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValuesDerivativesBalanceSheetLocationByDerivativeContractTypeByHedgingDesignationTable_6B0429E98356054C3F6581181B02B1EF" xlink:to="loc_us-gaap_BalanceSheetLocationAxis_1382FADE9778EBAA013D81181B09AB52" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_708CD981B202FE18AD4581181B094A52_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_1382FADE9778EBAA013D81181B09AB52" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_708CD981B202FE18AD4581181B094A52_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="loc_us-gaap_BalanceSheetLocationDomain_708CD981B202FE18AD4581181B094A52" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BalanceSheetLocationAxis_1382FADE9778EBAA013D81181B09AB52" xlink:to="loc_us-gaap_BalanceSheetLocationDomain_708CD981B202FE18AD4581181B094A52" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember" xlink:label="loc_us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember_D386ADC966D23EDF97A081181B098A95" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_708CD981B202FE18AD4581181B094A52" xlink:to="loc_us-gaap_PrepaidExpensesAndOtherCurrentAssetsMember_D386ADC966D23EDF97A081181B098A95" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_OtherAssetsMember" xlink:label="loc_us-gaap_OtherAssetsMember_F737B5FF8ACD5FE1408381181B09FE76" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_708CD981B202FE18AD4581181B094A52" xlink:to="loc_us-gaap_OtherAssetsMember_F737B5FF8ACD5FE1408381181B09FE76" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_OtherAccruedLiabilitiesMember" xlink:label="loc_adsk_OtherAccruedLiabilitiesMember_0D417F1F24433C4DC54281181B09EAD7" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BalanceSheetLocationDomain_708CD981B202FE18AD4581181B094A52" xlink:to="loc_adsk_OtherAccruedLiabilitiesMember_0D417F1F24433C4DC54281181B09EAD7" xlink:type="arc" />
    <loc xlink:href="http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd#invest_DerivativeNotionalAmount" xlink:label="loc_invest_DerivativeNotionalAmount_35C95C110D09E2A632DC81181B09ACD0" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_F4C27C67FDEBD2DF5FD081181B0948F2" xlink:to="loc_invest_DerivativeNotionalAmount_35C95C110D09E2A632DC81181B09ACD0" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax_2605659AEC617226CE8A81181B0AEE39" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_F4C27C67FDEBD2DF5FD081181B0948F2" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax_2605659AEC617226CE8A81181B0AEE39" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral_931B32D41EBE18D0AA0781181B0AD7F8" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_F4C27C67FDEBD2DF5FD081181B0948F2" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral_931B32D41EBE18D0AA0781181B0AD7F8" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral_1BA0B0F6B8E3E575FA3B81181B0AFA93" xlink:type="locator" />
    <definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_F4C27C67FDEBD2DF5FD081181B0948F2" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral_1BA0B0F6B8E3E575FA3B81181B0AFA93" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeAsset" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_504819C1C89ACE32075381181B0AC105" xlink:type="locator" />
    <definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_F4C27C67FDEBD2DF5FD081181B0948F2" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeAsset_504819C1C89ACE32075381181B0AC105" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DerivativeFairValueOfDerivativeLiability" xlink:label="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_A2D1508D1151DE06F4C781181B0A5193" xlink:type="locator" />
    <definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_DerivativesFairValueLineItems_F4C27C67FDEBD2DF5FD081181B0948F2" xlink:to="loc_us-gaap_DerivativeFairValueOfDerivativeLiability_A2D1508D1151DE06F4C781181B0A5193" xlink:type="arc" />
  </definitionLink>
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/FinancialInstrumentsReconciliationOfChangeInLevel3ItemsDetails" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_2E03B422DBAC68B6D67481181B37255B" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable" xlink:label="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable_32290B302F4450F9C0D781181B31E727" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_2E03B422DBAC68B6D67481181B37255B" xlink:to="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable_32290B302F4450F9C0D781181B31E727" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FairValueByAssetClassAxis" xlink:label="loc_us-gaap_FairValueByAssetClassAxis_7A60E07A549030C1E45881181B313E1B" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTable_32290B302F4450F9C0D781181B31E727" xlink:to="loc_us-gaap_FairValueByAssetClassAxis_7A60E07A549030C1E45881181B313E1B" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_2581FD87E691464D0FB381181B365D6B_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FairValueByAssetClassAxis_7A60E07A549030C1E45881181B313E1B" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_2581FD87E691464D0FB381181B365D6B_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_2581FD87E691464D0FB381181B365D6B" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FairValueByAssetClassAxis_7A60E07A549030C1E45881181B313E1B" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_2581FD87E691464D0FB381181B365D6B" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DerivativeMember" xlink:label="loc_us-gaap_DerivativeMember_0C8B106729FA67AC5E4581181B375DBA" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_2581FD87E691464D0FB381181B365D6B" xlink:to="loc_us-gaap_DerivativeMember_0C8B106729FA67AC5E4581181B375DBA" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ConvertibleDebtSecuritiesMember" xlink:label="loc_us-gaap_ConvertibleDebtSecuritiesMember_65D177853D87E3E2A00781181B37E7B8" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_2581FD87E691464D0FB381181B365D6B" xlink:to="loc_us-gaap_ConvertibleDebtSecuritiesMember_65D177853D87E3E2A00781181B37E7B8" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward" xlink:label="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_65CAB121A2C8094AD9CF81181B37FF42" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_2E03B422DBAC68B6D67481181B37255B" xlink:to="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_65CAB121A2C8094AD9CF81181B37FF42" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue_FFA2F12615D50CB267B581181B370BCC" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_65CAB121A2C8094AD9CF81181B37FF42" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue_FFA2F12615D50CB267B581181B370BCC" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases_38F58FC49EFA5251F73E81181B37A25C" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_65CAB121A2C8094AD9CF81181B37FF42" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases_38F58FC49EFA5251F73E81181B37A25C" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements_E038C7EC24518F460FEF81181B37153E" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_65CAB121A2C8094AD9CF81181B37FF42" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements_E038C7EC24518F460FEF81181B37153E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1_AA80FDD0FB17C4B95F1B81181B37A90C" xlink:type="locator" />
    <definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_65CAB121A2C8094AD9CF81181B37FF42" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1_AA80FDD0FB17C4B95F1B81181B37A90C" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss" xlink:label="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss_E5AC7C5496B72FFADD6081181B3841A4" xlink:type="locator" />
    <definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward_65CAB121A2C8094AD9CF81181B37FF42" xlink:to="loc_us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss_E5AC7C5496B72FFADD6081181B3841A4" xlink:type="arc" />
  </definitionLink>
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/FinancialInstrumentsTables" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/Goodwill" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/GoodwillChangesInCarryingAmountOfGoodwillDetails" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_GoodwillLineItems" xlink:label="loc_us-gaap_GoodwillLineItems_F30BA66E145A48FF2175C4E5488056E5" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfGoodwillTable" xlink:label="loc_us-gaap_ScheduleOfGoodwillTable_E2D06AB77C51FEB64E9DC4E5487E5B09" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_GoodwillLineItems_F30BA66E145A48FF2175C4E5488056E5" xlink:to="loc_us-gaap_ScheduleOfGoodwillTable_E2D06AB77C51FEB64E9DC4E5487E5B09" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_5ED944A27B670C56F82CC4E5487E1405" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_E2D06AB77C51FEB64E9DC4E5487E5B09" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_5ED944A27B670C56F82CC4E5487E1405" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_51D93509CA2EF36F2A78C4E5487E616F_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_5ED944A27B670C56F82CC4E5487E1405" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_51D93509CA2EF36F2A78C4E5487E616F_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_51D93509CA2EF36F2A78C4E5487E616F" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_5ED944A27B670C56F82CC4E5487E1405" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_51D93509CA2EF36F2A78C4E5487E616F" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_DelcamMember" xlink:label="loc_adsk_DelcamMember_8581EE42E35C6EF8061DC4E5487F0D7C" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_51D93509CA2EF36F2A78C4E5487E616F" xlink:to="loc_adsk_DelcamMember_8581EE42E35C6EF8061DC4E5487F0D7C" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_WithinTechnologiesLimitedMember" xlink:label="loc_adsk_WithinTechnologiesLimitedMember_7EC598F8668D5E71CE30C4E5487F7220" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_51D93509CA2EF36F2A78C4E5487E616F" xlink:to="loc_adsk_WithinTechnologiesLimitedMember_7EC598F8668D5E71CE30C4E5487F7220" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_ShotgunMember" xlink:label="loc_adsk_ShotgunMember_D42157483C30903B1E6EC4E5487FF66D" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_51D93509CA2EF36F2A78C4E5487E616F" xlink:to="loc_adsk_ShotgunMember_D42157483C30903B1E6EC4E5487FF66D" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SeriesOfIndividuallyImmaterialBusinessAcquisitionsMember" xlink:label="loc_us-gaap_SeriesOfIndividuallyImmaterialBusinessAcquisitionsMember_CFA2DC7D9ABF5BFA20BCC4E5487FEC9C" xlink:type="locator" />
    <definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_51D93509CA2EF36F2A78C4E5487E616F" xlink:to="loc_us-gaap_SeriesOfIndividuallyImmaterialBusinessAcquisitionsMember_CFA2DC7D9ABF5BFA20BCC4E5487FEC9C" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_C5EC647E28EDBDC6E0F0C4E5487FD6E6" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_E2D06AB77C51FEB64E9DC4E5487E5B09" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_C5EC647E28EDBDC6E0F0C4E5487FD6E6" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_5F8069E9AF49E0A9E1EDC4E5487F0F51_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_C5EC647E28EDBDC6E0F0C4E5487FD6E6" xlink:to="loc_us-gaap_SegmentDomain_5F8069E9AF49E0A9E1EDC4E5487F0F51_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_5F8069E9AF49E0A9E1EDC4E5487F0F51" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_C5EC647E28EDBDC6E0F0C4E5487FD6E6" xlink:to="loc_us-gaap_SegmentDomain_5F8069E9AF49E0A9E1EDC4E5487F0F51" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_PlatformSolutionsAndEmergingBusinessMember" xlink:label="loc_adsk_PlatformSolutionsAndEmergingBusinessMember_095C33FBF89DAF3133B5C4E5487FF3D7" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_5F8069E9AF49E0A9E1EDC4E5487F0F51" xlink:to="loc_adsk_PlatformSolutionsAndEmergingBusinessMember_095C33FBF89DAF3133B5C4E5487FF3D7" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_ArchitectureEngineeringAndConstructionMember" xlink:label="loc_adsk_ArchitectureEngineeringAndConstructionMember_2233E6A187AF2EBE12ADC4E5487F68AC" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_5F8069E9AF49E0A9E1EDC4E5487F0F51" xlink:to="loc_adsk_ArchitectureEngineeringAndConstructionMember_2233E6A187AF2EBE12ADC4E5487F68AC" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_ManufacturingMember" xlink:label="loc_adsk_ManufacturingMember_819E140D15214149731BC4E548809A79" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_5F8069E9AF49E0A9E1EDC4E5487F0F51" xlink:to="loc_adsk_ManufacturingMember_819E140D15214149731BC4E548809A79" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_MediaAndEntertainmentMember" xlink:label="loc_adsk_MediaAndEntertainmentMember_181EC09E65BF2AE522D4C4E5488013FC" xlink:type="locator" />
    <definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_5F8069E9AF49E0A9E1EDC4E5487F0F51" xlink:to="loc_adsk_MediaAndEntertainmentMember_181EC09E65BF2AE522D4C4E5488013FC" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_GoodwillRollForward" xlink:label="loc_us-gaap_GoodwillRollForward_3CC1C5DF5B7797D5F904C4E548801B1D" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillLineItems_F30BA66E145A48FF2175C4E5488056E5" xlink:to="loc_us-gaap_GoodwillRollForward_3CC1C5DF5B7797D5F904C4E548801B1D" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_GoodwillBeforeAccumulatedImpairments" xlink:label="loc_adsk_GoodwillBeforeAccumulatedImpairments_A7F7CDE09208006F8724C4E548807BA1" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_3CC1C5DF5B7797D5F904C4E548801B1D" xlink:to="loc_adsk_GoodwillBeforeAccumulatedImpairments_A7F7CDE09208006F8724C4E548807BA1" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_GoodwillImpairedAccumulatedImpairmentLoss" xlink:label="loc_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_EB918E3E74BA583B2D07C4E548807DD7" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_3CC1C5DF5B7797D5F904C4E548801B1D" xlink:to="loc_us-gaap_GoodwillImpairedAccumulatedImpairmentLoss_EB918E3E74BA583B2D07C4E548807DD7" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_C8AEA8D50DCAB08C7BFBC4E548808517" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_3CC1C5DF5B7797D5F904C4E548801B1D" xlink:to="loc_us-gaap_Goodwill_C8AEA8D50DCAB08C7BFBC4E548808517" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_GoodwillAcquiredDuringPeriod" xlink:label="loc_us-gaap_GoodwillAcquiredDuringPeriod_4947EEB4C9A4A1E47A5DC4E54880DC53" xlink:type="locator" />
    <definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_3CC1C5DF5B7797D5F904C4E548801B1D" xlink:to="loc_us-gaap_GoodwillAcquiredDuringPeriod_4947EEB4C9A4A1E47A5DC4E54880DC53" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_GoodwillTranslationAndPurchaseAccountingAdjustments" xlink:label="loc_us-gaap_GoodwillTranslationAndPurchaseAccountingAdjustments_CDBBFF467404446E072EC4E54880BC77" xlink:type="locator" />
    <definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_GoodwillRollForward_3CC1C5DF5B7797D5F904C4E548801B1D" xlink:to="loc_us-gaap_GoodwillTranslationAndPurchaseAccountingAdjustments_CDBBFF467404446E072EC4E54880BC77" xlink:type="arc" />
  </definitionLink>
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/GoodwillTables" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/IncomeTax" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/IncomeTaxIncomeTaxDetails" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/NetIncomePerShare" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/NetIncomePerShareAdditionalInformationDetails" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/NetIncomePerShareTables" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/OtherIntangibleAssetsAndRelatedAccumulatedAmortizationDetails" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_64C4E927A68D6AFD2104BEB7A8A28CB4" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_5CC947C012C167E0A433BEB7A8A2F451" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_64C4E927A68D6AFD2104BEB7A8A28CB4" xlink:to="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_5CC947C012C167E0A433BEB7A8A2F451" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_958EB08E06BBB81A4BDEBEB7A8A2F73C" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_5CC947C012C167E0A433BEB7A8A2F451" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_958EB08E06BBB81A4BDEBEB7A8A2F73C" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_712B35C45706275F57F8BEB7A8A2313C_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_958EB08E06BBB81A4BDEBEB7A8A2F73C" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_712B35C45706275F57F8BEB7A8A2313C_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_712B35C45706275F57F8BEB7A8A2313C" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_958EB08E06BBB81A4BDEBEB7A8A2F73C" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_712B35C45706275F57F8BEB7A8A2313C" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_DevelopedTechnologyRightsMember" xlink:label="loc_us-gaap_DevelopedTechnologyRightsMember_547C28C3D3B8539AD7B2BEB7A8A22C0E" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_712B35C45706275F57F8BEB7A8A2313C" xlink:to="loc_us-gaap_DevelopedTechnologyRightsMember_547C28C3D3B8539AD7B2BEB7A8A22C0E" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_CustomerRelationshipsTradeNamesPatentsandUserListMember" xlink:label="loc_adsk_CustomerRelationshipsTradeNamesPatentsandUserListMember_599C937EA0BE1B2CB5ECBEB7A8A2D229" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_712B35C45706275F57F8BEB7A8A2313C" xlink:to="loc_adsk_CustomerRelationshipsTradeNamesPatentsandUserListMember_599C937EA0BE1B2CB5ECBEB7A8A2D229" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_43ACD1A179D76CBD6418BEB7A8A2A7DD" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_64C4E927A68D6AFD2104BEB7A8A28CB4" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_43ACD1A179D76CBD6418BEB7A8A2A7DD" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_8853B72FB1147E07C7A3BEB7A8A2EDED" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_64C4E927A68D6AFD2104BEB7A8A28CB4" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_8853B72FB1147E07C7A3BEB7A8A2EDED" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_0141519219BF9F630288BEB7A8A28E7D" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_64C4E927A68D6AFD2104BEB7A8A28CB4" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_0141519219BF9F630288BEB7A8A28E7D" xlink:type="arc" />
  </definitionLink>
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/OtherIntangibleAssetsNet" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/OtherIntangibleAssetsNetTables" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/RecentlyIssuedAccountingStandards" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/Restructuring" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/RestructuringDetails" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RestructuringCostAndReserveLineItems" xlink:label="loc_us-gaap_RestructuringCostAndReserveLineItems_FB3B2B48A76FFFD9F91CC4F168A89CE2" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTable" xlink:label="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_DC25F1153F96B3600F7CC4F168A74A64" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_FB3B2B48A76FFFD9F91CC4F168A89CE2" xlink:to="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_DC25F1153F96B3600F7CC4F168A74A64" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RestructuringPlanAxis" xlink:label="loc_us-gaap_RestructuringPlanAxis_C5ECA9FA61E7A69F4853C4F168A70A31" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_DC25F1153F96B3600F7CC4F168A74A64" xlink:to="loc_us-gaap_RestructuringPlanAxis_C5ECA9FA61E7A69F4853C4F168A70A31" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RestructuringPlanDomain" xlink:label="loc_us-gaap_RestructuringPlanDomain_809A7F5B66E013513A33C4F168A7A770_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringPlanAxis_C5ECA9FA61E7A69F4853C4F168A70A31" xlink:to="loc_us-gaap_RestructuringPlanDomain_809A7F5B66E013513A33C4F168A7A770_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RestructuringPlanDomain" xlink:label="loc_us-gaap_RestructuringPlanDomain_809A7F5B66E013513A33C4F168A7A770" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringPlanAxis_C5ECA9FA61E7A69F4853C4F168A70A31" xlink:to="loc_us-gaap_RestructuringPlanDomain_809A7F5B66E013513A33C4F168A7A770" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_Fiscal2014PlanMember" xlink:label="loc_adsk_Fiscal2014PlanMember_D1F2F78D9E2103232DD1C4F168A7F633" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringPlanDomain_809A7F5B66E013513A33C4F168A7A770" xlink:to="loc_adsk_Fiscal2014PlanMember_D1F2F78D9E2103232DD1C4F168A7F633" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RangeAxis" xlink:label="loc_us-gaap_RangeAxis_9D4CAB88EE405ED8E13FC4F168A7D6C4" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_DC25F1153F96B3600F7CC4F168A74A64" xlink:to="loc_us-gaap_RangeAxis_9D4CAB88EE405ED8E13FC4F168A7D6C4" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember_8C8A117362CD2CF14B92C4F168A7C519_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RangeAxis_9D4CAB88EE405ED8E13FC4F168A7D6C4" xlink:to="loc_us-gaap_RangeMember_8C8A117362CD2CF14B92C4F168A7C519_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember_8C8A117362CD2CF14B92C4F168A7C519" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RangeAxis_9D4CAB88EE405ED8E13FC4F168A7D6C4" xlink:to="loc_us-gaap_RangeMember_8C8A117362CD2CF14B92C4F168A7C519" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_MinimumMember" xlink:label="loc_us-gaap_MinimumMember_190D8C47D45FEDC7BD05C4F168A73BC4" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember_8C8A117362CD2CF14B92C4F168A7C519" xlink:to="loc_us-gaap_MinimumMember_190D8C47D45FEDC7BD05C4F168A73BC4" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RestructuringCostAndReserveAxis" xlink:label="loc_us-gaap_RestructuringCostAndReserveAxis_A38093BF876DB8E0F1B2C4F168A84D4C" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfRestructuringAndRelatedCostsTable_DC25F1153F96B3600F7CC4F168A74A64" xlink:to="loc_us-gaap_RestructuringCostAndReserveAxis_A38093BF876DB8E0F1B2C4F168A84D4C" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_TypeOfRestructuringDomain" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_AD98168E4D454EE7E87FC4F168A82828_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_A38093BF876DB8E0F1B2C4F168A84D4C" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_AD98168E4D454EE7E87FC4F168A82828_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_TypeOfRestructuringDomain" xlink:label="loc_us-gaap_TypeOfRestructuringDomain_AD98168E4D454EE7E87FC4F168A82828" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RestructuringCostAndReserveAxis_A38093BF876DB8E0F1B2C4F168A84D4C" xlink:to="loc_us-gaap_TypeOfRestructuringDomain_AD98168E4D454EE7E87FC4F168A82828" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_EmployeeSeveranceMember" xlink:label="loc_us-gaap_EmployeeSeveranceMember_8B76B8920C9AD0ECAAB5C4F168A8846D" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_AD98168E4D454EE7E87FC4F168A82828" xlink:to="loc_us-gaap_EmployeeSeveranceMember_8B76B8920C9AD0ECAAB5C4F168A8846D" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_FacilityClosingMember" xlink:label="loc_us-gaap_FacilityClosingMember_543D1F5173DA324926AAC4F168A8E10A" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_TypeOfRestructuringDomain_AD98168E4D454EE7E87FC4F168A82828" xlink:to="loc_us-gaap_FacilityClosingMember_543D1F5173DA324926AAC4F168A8E10A" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RestructuringAndRelatedCostNumberOfPositionsEliminated" xlink:label="loc_us-gaap_RestructuringAndRelatedCostNumberOfPositionsEliminated_060E9B0BE2FBA2B01F97C4F168A88CB7" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_FB3B2B48A76FFFD9F91CC4F168A89CE2" xlink:to="loc_us-gaap_RestructuringAndRelatedCostNumberOfPositionsEliminated_060E9B0BE2FBA2B01F97C4F168A88CB7" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_NumberOfFacilitiesThatWereConsolidated" xlink:label="loc_adsk_NumberOfFacilitiesThatWereConsolidated_CAB3F579C026B0A0D135C4F168A89048" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_FB3B2B48A76FFFD9F91CC4F168A89CE2" xlink:to="loc_adsk_NumberOfFacilitiesThatWereConsolidated_CAB3F579C026B0A0D135C4F168A89048" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RestructuringAndRelatedCostExpectedCost1" xlink:label="loc_us-gaap_RestructuringAndRelatedCostExpectedCost1_97EFDFBA408B824465FDC4F168A871FD" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_FB3B2B48A76FFFD9F91CC4F168A89CE2" xlink:to="loc_us-gaap_RestructuringAndRelatedCostExpectedCost1_97EFDFBA408B824465FDC4F168A871FD" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RestructuringReserveRollForward" xlink:label="loc_us-gaap_RestructuringReserveRollForward_3150A7B1D820F3F7CA42C4F168A85CF9" xlink:type="locator" />
    <definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_FB3B2B48A76FFFD9F91CC4F168A89CE2" xlink:to="loc_us-gaap_RestructuringReserveRollForward_3150A7B1D820F3F7CA42C4F168A85CF9" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RestructuringReserve" xlink:label="loc_us-gaap_RestructuringReserve_5A9E503EF209EB6DD08DC4F168A81ACC" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringReserveRollForward_3150A7B1D820F3F7CA42C4F168A85CF9" xlink:to="loc_us-gaap_RestructuringReserve_5A9E503EF209EB6DD08DC4F168A81ACC" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RestructuringCharges" xlink:label="loc_us-gaap_RestructuringCharges_0BADDBEC6159FAF205C4C4F168A88B4F" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringReserveRollForward_3150A7B1D820F3F7CA42C4F168A85CF9" xlink:to="loc_us-gaap_RestructuringCharges_0BADDBEC6159FAF205C4C4F168A88B4F" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PaymentsForRestructuring" xlink:label="loc_us-gaap_PaymentsForRestructuring_2B2DC422F18CD056E62DC4F168A8D9CE" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringReserveRollForward_3150A7B1D820F3F7CA42C4F168A85CF9" xlink:to="loc_us-gaap_PaymentsForRestructuring_2B2DC422F18CD056E62DC4F168A8D9CE" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RestructuringReserveTranslationAndOtherAdjustment" xlink:label="loc_us-gaap_RestructuringReserveTranslationAndOtherAdjustment_1834ADAE42AB6FA365A6C4F168A8989B" xlink:type="locator" />
    <definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringReserveRollForward_3150A7B1D820F3F7CA42C4F168A85CF9" xlink:to="loc_us-gaap_RestructuringReserveTranslationAndOtherAdjustment_1834ADAE42AB6FA365A6C4F168A8989B" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RestructuringReserveCurrent" xlink:label="loc_us-gaap_RestructuringReserveCurrent_03347E8B12FB52A9A181C4F168A856A2" xlink:type="locator" />
    <definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_FB3B2B48A76FFFD9F91CC4F168A89CE2" xlink:to="loc_us-gaap_RestructuringReserveCurrent_03347E8B12FB52A9A181C4F168A856A2" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RestructuringReserveNoncurrent" xlink:label="loc_us-gaap_RestructuringReserveNoncurrent_B8C1D76BE9143927A419C4F168A84680" xlink:type="locator" />
    <definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RestructuringCostAndReserveLineItems_FB3B2B48A76FFFD9F91CC4F168A89CE2" xlink:to="loc_us-gaap_RestructuringReserveNoncurrent_B8C1D76BE9143927A419C4F168A84680" xlink:type="arc" />
  </definitionLink>
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/RestructuringTables" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/Segments" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/SegmentsConcerningOperationsOfReportableSegmentsDetails" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_95DAAF116E7A67646640BEB7A858FDCF" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_38B258F6F718B7636F7FBEB7A857A424" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_95DAAF116E7A67646640BEB7A858FDCF" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_38B258F6F718B7636F7FBEB7A857A424" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="loc_us-gaap_StatementBusinessSegmentsAxis_F159677CA91B7D31D293BEB7A857259A" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_38B258F6F718B7636F7FBEB7A857A424" xlink:to="loc_us-gaap_StatementBusinessSegmentsAxis_F159677CA91B7D31D293BEB7A857259A" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_B1AD17D1FCC20154B237BEB7A857E753_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_F159677CA91B7D31D293BEB7A857259A" xlink:to="loc_us-gaap_SegmentDomain_B1AD17D1FCC20154B237BEB7A857E753_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SegmentDomain" xlink:label="loc_us-gaap_SegmentDomain_B1AD17D1FCC20154B237BEB7A857E753" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementBusinessSegmentsAxis_F159677CA91B7D31D293BEB7A857259A" xlink:to="loc_us-gaap_SegmentDomain_B1AD17D1FCC20154B237BEB7A857E753" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_PlatformSolutionsAndEmergingBusinessMember" xlink:label="loc_adsk_PlatformSolutionsAndEmergingBusinessMember_46F385470EABD8515387BEB7A8573716" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_B1AD17D1FCC20154B237BEB7A857E753" xlink:to="loc_adsk_PlatformSolutionsAndEmergingBusinessMember_46F385470EABD8515387BEB7A8573716" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_ArchitectureEngineeringAndConstructionMember" xlink:label="loc_adsk_ArchitectureEngineeringAndConstructionMember_B98D86AE25D97A0B8F7ABEB7A8574E76" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_B1AD17D1FCC20154B237BEB7A857E753" xlink:to="loc_adsk_ArchitectureEngineeringAndConstructionMember_B98D86AE25D97A0B8F7ABEB7A8574E76" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_ManufacturingMember" xlink:label="loc_adsk_ManufacturingMember_3D33037BCAAA811AC23EBEB7A8572676" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_B1AD17D1FCC20154B237BEB7A857E753" xlink:to="loc_adsk_ManufacturingMember_3D33037BCAAA811AC23EBEB7A8572676" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_MediaAndEntertainmentMember" xlink:label="loc_adsk_MediaAndEntertainmentMember_CBB0E2A2487FAD58A792BEB7A85854FF" xlink:type="locator" />
    <definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentDomain_B1AD17D1FCC20154B237BEB7A857E753" xlink:to="loc_adsk_MediaAndEntertainmentMember_CBB0E2A2487FAD58A792BEB7A85854FF" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ConsolidationItemsAxis" xlink:label="loc_us-gaap_ConsolidationItemsAxis_D7D7CF881E31C9E322ADBEEAD575328C" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_38B258F6F718B7636F7FBEB7A857A424" xlink:to="loc_us-gaap_ConsolidationItemsAxis_D7D7CF881E31C9E322ADBEEAD575328C" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ConsolidationItemsDomain" xlink:label="loc_us-gaap_ConsolidationItemsDomain_93F82046462AAFADF41EBEEAD57CCB33_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ConsolidationItemsAxis_D7D7CF881E31C9E322ADBEEAD575328C" xlink:to="loc_us-gaap_ConsolidationItemsDomain_93F82046462AAFADF41EBEEAD57CCB33_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ConsolidationItemsDomain" xlink:label="loc_us-gaap_ConsolidationItemsDomain_93F82046462AAFADF41EBEEAD57CCB33" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ConsolidationItemsAxis_D7D7CF881E31C9E322ADBEEAD575328C" xlink:to="loc_us-gaap_ConsolidationItemsDomain_93F82046462AAFADF41EBEEAD57CCB33" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_MaterialReconcilingItemsMember" xlink:label="loc_us-gaap_MaterialReconcilingItemsMember_82AB57799F9DDBC17865BEEB1676FE11" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ConsolidationItemsDomain_93F82046462AAFADF41EBEEAD57CCB33" xlink:to="loc_us-gaap_MaterialReconcilingItemsMember_82AB57799F9DDBC17865BEEB1676FE11" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_NumberOfReportableSegments" xlink:label="loc_us-gaap_NumberOfReportableSegments_077ED911542EDCE265A9BEB7A857EBB4" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_95DAAF116E7A67646640BEB7A858FDCF" xlink:to="loc_us-gaap_NumberOfReportableSegments_077ED911542EDCE265A9BEB7A857EBB4" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_NumberofProductGroups" xlink:label="loc_adsk_NumberofProductGroups_0D920B7B809244949237BEB7A858C002" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_95DAAF116E7A67646640BEB7A858FDCF" xlink:to="loc_adsk_NumberofProductGroups_0D920B7B809244949237BEB7A858C002" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SalesRevenueNet" xlink:label="loc_us-gaap_SalesRevenueNet_5D374A39BEB6D1B1309EBEB7A85864DA" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_95DAAF116E7A67646640BEB7A858FDCF" xlink:to="loc_us-gaap_SalesRevenueNet_5D374A39BEB6D1B1309EBEB7A85864DA" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_GrossProfit" xlink:label="loc_us-gaap_GrossProfit_114DFD775EA9F56EA66ABEB7A8589DD7" xlink:type="locator" />
    <definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_95DAAF116E7A67646640BEB7A858FDCF" xlink:to="loc_us-gaap_GrossProfit_114DFD775EA9F56EA66ABEB7A8589DD7" xlink:type="arc" />
  </definitionLink>
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/SegmentsInformationRegardingOperationsByGeographicAreaDetails" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_5E731A2DDF17D6A82E148501DE1D7301" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_CBCD79B7ED5E558B90A98501DE1C6F0B" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_5E731A2DDF17D6A82E148501DE1D7301" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_CBCD79B7ED5E558B90A98501DE1C6F0B" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StatementGeographicalAxis" xlink:label="loc_us-gaap_StatementGeographicalAxis_38D983482C1B2B909CEC8501DE1CD0B5" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_CBCD79B7ED5E558B90A98501DE1C6F0B" xlink:to="loc_us-gaap_StatementGeographicalAxis_38D983482C1B2B909CEC8501DE1CD0B5" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SegmentGeographicalDomain" xlink:label="loc_us-gaap_SegmentGeographicalDomain_68C4031EC665D7974D138501DE1C4CDF_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_StatementGeographicalAxis_38D983482C1B2B909CEC8501DE1CD0B5" xlink:to="loc_us-gaap_SegmentGeographicalDomain_68C4031EC665D7974D138501DE1C4CDF_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SegmentGeographicalDomain" xlink:label="loc_us-gaap_SegmentGeographicalDomain_68C4031EC665D7974D138501DE1C4CDF" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_StatementGeographicalAxis_38D983482C1B2B909CEC8501DE1CD0B5" xlink:to="loc_us-gaap_SegmentGeographicalDomain_68C4031EC665D7974D138501DE1C4CDF" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AmericasMember" xlink:label="loc_us-gaap_AmericasMember_591D3BBF46495B516FEE8501DE1C6F56" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentGeographicalDomain_68C4031EC665D7974D138501DE1C4CDF" xlink:to="loc_us-gaap_AmericasMember_591D3BBF46495B516FEE8501DE1C6F56" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_EMEAMember" xlink:label="loc_us-gaap_EMEAMember_E13367BEFC0CDAABFBE28501DE1DD8AD" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentGeographicalDomain_68C4031EC665D7974D138501DE1C4CDF" xlink:to="loc_us-gaap_EMEAMember_E13367BEFC0CDAABFBE28501DE1DD8AD" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AsiaPacificMember" xlink:label="loc_us-gaap_AsiaPacificMember_E39EC80E2712308FCA398501DE1D3FD8" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentGeographicalDomain_68C4031EC665D7974D138501DE1C4CDF" xlink:to="loc_us-gaap_AsiaPacificMember_E39EC80E2712308FCA398501DE1D3FD8" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_RegionReportingInformationBySecondaryRegionAxis" xlink:label="loc_adsk_RegionReportingInformationBySecondaryRegionAxis_07FD664FD64D67D799D18501DE1DD583" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_CBCD79B7ED5E558B90A98501DE1C6F0B" xlink:to="loc_adsk_RegionReportingInformationBySecondaryRegionAxis_07FD664FD64D67D799D18501DE1DD583" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_RegionReportingInformationBySecondaryRegionDomain" xlink:label="loc_adsk_RegionReportingInformationBySecondaryRegionDomain_9091DB1644A0D65D8A1A8501DE1D0CF5_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_adsk_RegionReportingInformationBySecondaryRegionAxis_07FD664FD64D67D799D18501DE1DD583" xlink:to="loc_adsk_RegionReportingInformationBySecondaryRegionDomain_9091DB1644A0D65D8A1A8501DE1D0CF5_default" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_RegionReportingInformationBySecondaryRegionDomain" xlink:label="loc_adsk_RegionReportingInformationBySecondaryRegionDomain_9091DB1644A0D65D8A1A8501DE1D0CF5" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_adsk_RegionReportingInformationBySecondaryRegionAxis_07FD664FD64D67D799D18501DE1DD583" xlink:to="loc_adsk_RegionReportingInformationBySecondaryRegionDomain_9091DB1644A0D65D8A1A8501DE1D0CF5" xlink:type="arc" />
    <loc xlink:href="http://xbrl.sec.gov/country/2013/country-2013-01-31.xsd#country_US" xlink:label="loc_country_US_43E1548E2B2C3AAF83AB8501DE1DE548" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_RegionReportingInformationBySecondaryRegionDomain_9091DB1644A0D65D8A1A8501DE1D0CF5" xlink:to="loc_country_US_43E1548E2B2C3AAF83AB8501DE1DE548" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_OtherAmericasMember" xlink:label="loc_adsk_OtherAmericasMember_C0F7B64CE31E03A201FA8501DE1D8B7F" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_RegionReportingInformationBySecondaryRegionDomain_9091DB1644A0D65D8A1A8501DE1D0CF5" xlink:to="loc_adsk_OtherAmericasMember_C0F7B64CE31E03A201FA8501DE1D8B7F" xlink:type="arc" />
    <loc xlink:href="http://xbrl.sec.gov/country/2013/country-2013-01-31.xsd#country_JP" xlink:label="loc_country_JP_0131A2A15246DBE4EA8E8501DE1D18F4" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_RegionReportingInformationBySecondaryRegionDomain_9091DB1644A0D65D8A1A8501DE1D0CF5" xlink:to="loc_country_JP_0131A2A15246DBE4EA8E8501DE1D18F4" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_OtherAsiaPacificMember" xlink:label="loc_adsk_OtherAsiaPacificMember_485EAA12B0677B99E7248501DE1D1820" xlink:type="locator" />
    <definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_RegionReportingInformationBySecondaryRegionDomain_9091DB1644A0D65D8A1A8501DE1D0CF5" xlink:to="loc_adsk_OtherAsiaPacificMember_485EAA12B0677B99E7248501DE1D1820" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SalesRevenueNet" xlink:label="loc_us-gaap_SalesRevenueNet_CFDD5C7A0EF9E0D0E04F8501DE1D45A6" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_5E731A2DDF17D6A82E148501DE1D7301" xlink:to="loc_us-gaap_SalesRevenueNet_CFDD5C7A0EF9E0D0E04F8501DE1D45A6" xlink:type="arc" />
  </definitionLink>
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/SegmentsTables" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/StockBasedCompensationExpense" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/StockBasedCompensationExpenseAssumptionUsedToEstimateFairValueOfStockBasedAwardsDetails" xlink:type="extended">
    <loc xlink:href="adsk-20141031.xsd#adsk_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsMethodUsedLineItems" xlink:label="loc_adsk_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsMethodUsedLineItems_31894D88ECAFD1D8D0E4E2C66CE037D5" xlink:type="locator" />
    <loc xlink:href="adsk-20141031.xsd#adsk_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsMethodUsedTable" xlink:label="loc_adsk_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsMethodUsedTable_038E2B58EE3ACCCAF59BE2C66CDFDADB" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_adsk_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsMethodUsedLineItems_31894D88ECAFD1D8D0E4E2C66CE037D5" xlink:to="loc_adsk_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsMethodUsedTable_038E2B58EE3ACCCAF59BE2C66CDFDADB" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="loc_us-gaap_AwardTypeAxis_C3588C581242EEA4D67FE2C66CE074AB" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_adsk_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsMethodUsedTable_038E2B58EE3ACCCAF59BE2C66CDFDADB" xlink:to="loc_us-gaap_AwardTypeAxis_C3588C581242EEA4D67FE2C66CE074AB" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_CC089F256EDEFBF1ED82E2C66CE0757D_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_C3588C581242EEA4D67FE2C66CE074AB" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_CC089F256EDEFBF1ED82E2C66CE0757D_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_CC089F256EDEFBF1ED82E2C66CE0757D" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_C3588C581242EEA4D67FE2C66CE074AB" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_CC089F256EDEFBF1ED82E2C66CE0757D" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PerformanceSharesMember" xlink:label="loc_us-gaap_PerformanceSharesMember_E5AF73A76CC1DBF9ECD5E2C66CE0A17D" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_CC089F256EDEFBF1ED82E2C66CE0757D" xlink:to="loc_us-gaap_PerformanceSharesMember_E5AF73A76CC1DBF9ECD5E2C66CE0A17D" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PlanNameAxis" xlink:label="loc_us-gaap_PlanNameAxis_4BCB011502BEBF0846C9E2C66CE01094" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_adsk_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsMethodUsedTable_038E2B58EE3ACCCAF59BE2C66CDFDADB" xlink:to="loc_us-gaap_PlanNameAxis_4BCB011502BEBF0846C9E2C66CE01094" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="loc_us-gaap_PlanNameDomain_DBEF46BCF7A50943B4FAE2C66CE0485B_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_4BCB011502BEBF0846C9E2C66CE01094" xlink:to="loc_us-gaap_PlanNameDomain_DBEF46BCF7A50943B4FAE2C66CE0485B_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="loc_us-gaap_PlanNameDomain_DBEF46BCF7A50943B4FAE2C66CE0485B" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_4BCB011502BEBF0846C9E2C66CE01094" xlink:to="loc_us-gaap_PlanNameDomain_DBEF46BCF7A50943B4FAE2C66CE0485B" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_EmployeeQualifiedStockPurchasePlan1998EspPlanMember" xlink:label="loc_adsk_EmployeeQualifiedStockPurchasePlan1998EspPlanMember_C70886E8795AB4D23523E2C66CE0EE5E" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_DBEF46BCF7A50943B4FAE2C66CE0485B" xlink:to="loc_adsk_EmployeeQualifiedStockPurchasePlan1998EspPlanMember_C70886E8795AB4D23523E2C66CE0EE5E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RangeAxis" xlink:label="loc_us-gaap_RangeAxis_6C2E65D0DF5F7F2B0230E2C66CE02EF8" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_adsk_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsMethodUsedTable_038E2B58EE3ACCCAF59BE2C66CDFDADB" xlink:to="loc_us-gaap_RangeAxis_6C2E65D0DF5F7F2B0230E2C66CE02EF8" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember_61E1481164C980DB0D7FE2C66CE02449_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RangeAxis_6C2E65D0DF5F7F2B0230E2C66CE02EF8" xlink:to="loc_us-gaap_RangeMember_61E1481164C980DB0D7FE2C66CE02449_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember_61E1481164C980DB0D7FE2C66CE02449" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RangeAxis_6C2E65D0DF5F7F2B0230E2C66CE02EF8" xlink:to="loc_us-gaap_RangeMember_61E1481164C980DB0D7FE2C66CE02449" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_MinimumMember" xlink:label="loc_us-gaap_MinimumMember_D43E8923A8984D1AFBC0E2C66CE01F86" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember_61E1481164C980DB0D7FE2C66CE02449" xlink:to="loc_us-gaap_MinimumMember_D43E8923A8984D1AFBC0E2C66CE01F86" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_MaximumMember" xlink:label="loc_us-gaap_MaximumMember_9AD05BC483D38A381889E2C66CE012B9" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember_61E1481164C980DB0D7FE2C66CE02449" xlink:to="loc_us-gaap_MaximumMember_9AD05BC483D38A381889E2C66CE012B9" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_CF2E9BD959F0645B6A88E2C66CE06F6E" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsMethodUsedLineItems_31894D88ECAFD1D8D0E4E2C66CE037D5" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_CF2E9BD959F0645B6A88E2C66CE06F6E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_08C490EF490151A1D32FE2C66CE18CC1" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsMethodUsedLineItems_31894D88ECAFD1D8D0E4E2C66CE037D5" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_08C490EF490151A1D32FE2C66CE18CC1" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_24E5F91BF8BACAF28BE1E2C66CE19B2D" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsMethodUsedLineItems_31894D88ECAFD1D8D0E4E2C66CE037D5" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_24E5F91BF8BACAF28BE1E2C66CE19B2D" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_B6D8653EDF6D4B8AE935E2C66CE13F2B" xlink:type="locator" />
    <definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsMethodUsedLineItems_31894D88ECAFD1D8D0E4E2C66CE037D5" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_B6D8653EDF6D4B8AE935E2C66CE13F2B" xlink:type="arc" />
  </definitionLink>
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/StockBasedCompensationExpenseIntrinsicValueOfOptionsExercisedAndWeightedAverageGrantDateFairValueOfStockOptionsGrantedDetails" xlink:type="extended" />
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/StockBasedCompensationExpenseScheduleOfShareBasedCompensationOptionsActivityDetails" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_EA0C2FB284E25BF7CAFBBE5A778D218A" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_6F255CDAA4BEAB588D32BE5A778D98CC" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_EA0C2FB284E25BF7CAFBBE5A778D218A" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_6F255CDAA4BEAB588D32BE5A778D98CC" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis" xlink:label="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis_FD6F3C9A5FF9A122198BBE5A778DDC6D" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_6F255CDAA4BEAB588D32BE5A778D98CC" xlink:to="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis_FD6F3C9A5FF9A122198BBE5A778DDC6D" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain" xlink:label="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain_FE27AC30AC3DFD7484D4BE5A778D115D_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis_FD6F3C9A5FF9A122198BBE5A778DDC6D" xlink:to="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain_FE27AC30AC3DFD7484D4BE5A778D115D_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain" xlink:label="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain_FE27AC30AC3DFD7484D4BE5A778D115D" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis_FD6F3C9A5FF9A122198BBE5A778DDC6D" xlink:to="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain_FE27AC30AC3DFD7484D4BE5A778D115D" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_Range1Member" xlink:label="loc_adsk_Range1Member_6006962AA6BE23233E03BE5A778D11B8" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain_FE27AC30AC3DFD7484D4BE5A778D115D" xlink:to="loc_adsk_Range1Member_6006962AA6BE23233E03BE5A778D11B8" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_Range2Member" xlink:label="loc_adsk_Range2Member_1D28C7916DCD87FA2B3FBE5A778D48EB" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain_FE27AC30AC3DFD7484D4BE5A778D115D" xlink:to="loc_adsk_Range2Member_1D28C7916DCD87FA2B3FBE5A778D48EB" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_Range3Member" xlink:label="loc_adsk_Range3Member_E059A55B078E220F02A0BE5A778D40F2" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain_FE27AC30AC3DFD7484D4BE5A778D115D" xlink:to="loc_adsk_Range3Member_E059A55B078E220F02A0BE5A778D40F2" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_D7DF16EC983F32D76E3FBE5A778D246F" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_EA0C2FB284E25BF7CAFBBE5A778D218A" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_D7DF16EC983F32D76E3FBE5A778D246F" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_A7C8ADDD3BD98D7C50F8BE5A778E20E0" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_D7DF16EC983F32D76E3FBE5A778D246F" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_A7C8ADDD3BD98D7C50F8BE5A778E20E0" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_814C3AE11694556ACB9EBE5A778E25A9" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_D7DF16EC983F32D76E3FBE5A778D246F" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_814C3AE11694556ACB9EBE5A778E25A9" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_D4733DB80EF809D12D08BE5A778E987B" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_D7DF16EC983F32D76E3FBE5A778D246F" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_D4733DB80EF809D12D08BE5A778E987B" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod_7D77790B181C9A7FAE90BE5A778ECB10" xlink:type="locator" />
    <definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_D7DF16EC983F32D76E3FBE5A778D246F" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod_7D77790B181C9A7FAE90BE5A778ECB10" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_5BFAB86B9BD8100D7195BE5A778EEF2C" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_EA0C2FB284E25BF7CAFBBE5A778D218A" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber_5BFAB86B9BD8100D7195BE5A778EEF2C" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber_83917A82D3E1B6DFA870BE5A778EA5BF" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_EA0C2FB284E25BF7CAFBBE5A778D218A" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber_83917A82D3E1B6DFA870BE5A778EA5BF" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_81154C22B3166DB653E2BE5A778E41EB" xlink:type="locator" />
    <definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_EA0C2FB284E25BF7CAFBBE5A778D218A" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_81154C22B3166DB653E2BE5A778E41EB" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_9B269DB4D910D5F3620EBE5A778E40E4" xlink:type="locator" />
    <definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_EA0C2FB284E25BF7CAFBBE5A778D218A" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_9B269DB4D910D5F3620EBE5A778E40E4" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_0B0552B28D23C58F9D1DBE5A778EB8A1" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_9B269DB4D910D5F3620EBE5A778E40E4" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_0B0552B28D23C58F9D1DBE5A778EB8A1" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_2E6F168F040F979CB78ABE5A778E426E" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_9B269DB4D910D5F3620EBE5A778E40E4" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_2E6F168F040F979CB78ABE5A778E426E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_ECC2F6B2A16084420E03BE5A778EFCB9" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_9B269DB4D910D5F3620EBE5A778E40E4" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_ECC2F6B2A16084420E03BE5A778EFCB9" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_891A47ECE83CAC2291E0BE5A778E1E2C" xlink:type="locator" />
    <definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_9B269DB4D910D5F3620EBE5A778E40E4" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_891A47ECE83CAC2291E0BE5A778E1E2C" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_9F8D4DAD1877AB51FFC2BE5A778E329F" xlink:type="locator" />
    <definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_9B269DB4D910D5F3620EBE5A778E40E4" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice_9F8D4DAD1877AB51FFC2BE5A778E329F" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice_7682FEC89D3C59AA28BBBE5A778F5724" xlink:type="locator" />
    <definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_9B269DB4D910D5F3620EBE5A778E40E4" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice_7682FEC89D3C59AA28BBBE5A778F5724" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_2A1B520BBC70F24505EEBE5A778F2FEE" xlink:type="locator" />
    <definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_EA0C2FB284E25BF7CAFBBE5A778D218A" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_2A1B520BBC70F24505EEBE5A778F2FEE" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_9047EDDDB49AF708F675BE5A778F0913" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_2A1B520BBC70F24505EEBE5A778F2FEE" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_9047EDDDB49AF708F675BE5A778F0913" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_89EDE19458264EF68B86BE5A778FBE2F" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_2A1B520BBC70F24505EEBE5A778F2FEE" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1_89EDE19458264EF68B86BE5A778FBE2F" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1_6C68726332AD318B66BBBE5A778FBB17" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_2A1B520BBC70F24505EEBE5A778F2FEE" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1_6C68726332AD318B66BBBE5A778FBB17" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_D03E4EB6E54587D24233BE5A778FE47B" xlink:type="locator" />
    <definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_2A1B520BBC70F24505EEBE5A778F2FEE" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_D03E4EB6E54587D24233BE5A778FE47B" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_AD48C5B56508B4BBEF3FBE5A778FEDEE" xlink:type="locator" />
    <definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_2A1B520BBC70F24505EEBE5A778F2FEE" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1_AD48C5B56508B4BBEF3FBE5A778FEDEE" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue_2FF5FC41921A8BBCAB18BE5A778F0FB0" xlink:type="locator" />
    <definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsAdditionalDisclosuresAbstract_2A1B520BBC70F24505EEBE5A778F2FEE" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingAggregateIntrinsicValue_2FF5FC41921A8BBCAB18BE5A778F0FB0" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_Sharebasedcompensationsharesauthorizedunderstockoptionplansexercisepricerangelowerlimit" xlink:label="loc_adsk_Sharebasedcompensationsharesauthorizedunderstockoptionplansexercisepricerangelowerlimit_9706669ECA6CC4E59C77BE5A778FC49C" xlink:type="locator" />
    <definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_EA0C2FB284E25BF7CAFBBE5A778D218A" xlink:to="loc_adsk_Sharebasedcompensationsharesauthorizedunderstockoptionplansexercisepricerangelowerlimit_9706669ECA6CC4E59C77BE5A778FC49C" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_Sharebasedcompensationsharesauthorizedunderstockoptionplansexercisepricerangeupperlimit" xlink:label="loc_adsk_Sharebasedcompensationsharesauthorizedunderstockoptionplansexercisepricerangeupperlimit_48EF4AF3CBACC884118BBE5A778F6AF6" xlink:type="locator" />
    <definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_EA0C2FB284E25BF7CAFBBE5A778D218A" xlink:to="loc_adsk_Sharebasedcompensationsharesauthorizedunderstockoptionplansexercisepricerangeupperlimit_48EF4AF3CBACC884118BBE5A778F6AF6" xlink:type="arc" />
  </definitionLink>
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/StockBasedCompensationExpenseStockBasedCompensationExpenseAdditionalInformationDetails" xlink:type="extended">
    <loc xlink:href="adsk-20141031.xsd#adsk_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems" xlink:label="loc_adsk_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems_DADB0CD382D8518AB7B9C3F500C4353A" xlink:type="locator" />
    <loc xlink:href="adsk-20141031.xsd#adsk_CompensationRelatedCostsShareBasedPaymentsDisclosureTable" xlink:label="loc_adsk_CompensationRelatedCostsShareBasedPaymentsDisclosureTable_042F2456E136CEFE4247C3F500C2954C" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_adsk_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems_DADB0CD382D8518AB7B9C3F500C4353A" xlink:to="loc_adsk_CompensationRelatedCostsShareBasedPaymentsDisclosureTable_042F2456E136CEFE4247C3F500C2954C" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PlanNameAxis" xlink:label="loc_us-gaap_PlanNameAxis_EEE5C48DB4C49E66709FC3F500C261B6" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_adsk_CompensationRelatedCostsShareBasedPaymentsDisclosureTable_042F2456E136CEFE4247C3F500C2954C" xlink:to="loc_us-gaap_PlanNameAxis_EEE5C48DB4C49E66709FC3F500C261B6" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="loc_us-gaap_PlanNameDomain_1CC8946B8A99E4F7E398C3F500C299FD_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_PlanNameAxis_EEE5C48DB4C49E66709FC3F500C261B6" xlink:to="loc_us-gaap_PlanNameDomain_1CC8946B8A99E4F7E398C3F500C299FD_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="loc_us-gaap_PlanNameDomain_1CC8946B8A99E4F7E398C3F500C299FD" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_PlanNameAxis_EEE5C48DB4C49E66709FC3F500C261B6" xlink:to="loc_us-gaap_PlanNameDomain_1CC8946B8A99E4F7E398C3F500C299FD" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_EmployeeStockPlan2012Member" xlink:label="loc_adsk_EmployeeStockPlan2012Member_801B1F37A582501946ACC3F500C208AE" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_1CC8946B8A99E4F7E398C3F500C299FD" xlink:to="loc_adsk_EmployeeStockPlan2012Member_801B1F37A582501946ACC3F500C208AE" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_DirectorsStockPlan2012Member" xlink:label="loc_adsk_DirectorsStockPlan2012Member_E29ABF01811DA9DAA46CC3F500C2DAA8" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_1CC8946B8A99E4F7E398C3F500C299FD" xlink:to="loc_adsk_DirectorsStockPlan2012Member_E29ABF01811DA9DAA46CC3F500C2DAA8" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_EmployeeQualifiedStockPurchasePlan1998EspPlanMember" xlink:label="loc_adsk_EmployeeQualifiedStockPurchasePlan1998EspPlanMember_A69E678D42BD10498FB8C3F500C35684" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_PlanNameDomain_1CC8946B8A99E4F7E398C3F500C299FD" xlink:to="loc_adsk_EmployeeQualifiedStockPurchasePlan1998EspPlanMember_A69E678D42BD10498FB8C3F500C35684" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="loc_us-gaap_AwardTypeAxis_8AC9213BCCB79180B3D7C3F500C31843" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_adsk_CompensationRelatedCostsShareBasedPaymentsDisclosureTable_042F2456E136CEFE4247C3F500C2954C" xlink:to="loc_us-gaap_AwardTypeAxis_8AC9213BCCB79180B3D7C3F500C31843" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_0E7A6498A7AAA0D422DCC3F500C3B87D_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_8AC9213BCCB79180B3D7C3F500C31843" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_0E7A6498A7AAA0D422DCC3F500C3B87D_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_0E7A6498A7AAA0D422DCC3F500C3B87D" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_8AC9213BCCB79180B3D7C3F500C31843" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_0E7A6498A7AAA0D422DCC3F500C3B87D" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_RestrictedStockUnitsRSUsandPerformanceSharesMember" xlink:label="loc_adsk_RestrictedStockUnitsRSUsandPerformanceSharesMember_C6C1AC5F23D637EEC287C3F500C3979E" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_0E7A6498A7AAA0D422DCC3F500C3B87D" xlink:to="loc_adsk_RestrictedStockUnitsRSUsandPerformanceSharesMember_C6C1AC5F23D637EEC287C3F500C3979E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_6383E2ECE09838B9A282C3F500C38EE8" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_0E7A6498A7AAA0D422DCC3F500C3B87D" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_6383E2ECE09838B9A282C3F500C38EE8" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PerformanceSharesMember" xlink:label="loc_us-gaap_PerformanceSharesMember_CB232C575E95014FDAF8C3F500C363BB" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_0E7A6498A7AAA0D422DCC3F500C3B87D" xlink:to="loc_us-gaap_PerformanceSharesMember_CB232C575E95014FDAF8C3F500C363BB" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RangeAxis" xlink:label="loc_us-gaap_RangeAxis_9563B92782DC1FFAA541C3F500C33235" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_adsk_CompensationRelatedCostsShareBasedPaymentsDisclosureTable_042F2456E136CEFE4247C3F500C2954C" xlink:to="loc_us-gaap_RangeAxis_9563B92782DC1FFAA541C3F500C33235" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember_922448FC7B5F4E3C1F5AC3F500C3F15C_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_RangeAxis_9563B92782DC1FFAA541C3F500C33235" xlink:to="loc_us-gaap_RangeMember_922448FC7B5F4E3C1F5AC3F500C3F15C_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember_922448FC7B5F4E3C1F5AC3F500C3F15C" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_RangeAxis_9563B92782DC1FFAA541C3F500C33235" xlink:to="loc_us-gaap_RangeMember_922448FC7B5F4E3C1F5AC3F500C3F15C" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_MinimumMember" xlink:label="loc_us-gaap_MinimumMember_6DEDF91EAA1DA13FD65CC3F500C335FC" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember_922448FC7B5F4E3C1F5AC3F500C3F15C" xlink:to="loc_us-gaap_MinimumMember_6DEDF91EAA1DA13FD65CC3F500C335FC" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_MaximumMember" xlink:label="loc_us-gaap_MaximumMember_03CB71E51D99D9CF080BC3F500C33082" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_RangeMember_922448FC7B5F4E3C1F5AC3F500C3F15C" xlink:to="loc_us-gaap_MaximumMember_03CB71E51D99D9CF080BC3F500C33082" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_VestingAxis" xlink:label="loc_us-gaap_VestingAxis_F38BBFA05F19D643AFF7C3F500C3E092" xlink:type="locator" />
    <definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_adsk_CompensationRelatedCostsShareBasedPaymentsDisclosureTable_042F2456E136CEFE4247C3F500C2954C" xlink:to="loc_us-gaap_VestingAxis_F38BBFA05F19D643AFF7C3F500C3E092" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_VestingDomain" xlink:label="loc_us-gaap_VestingDomain_C39088E92DCEA6DD8664C3F500C316FA_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_VestingAxis_F38BBFA05F19D643AFF7C3F500C3E092" xlink:to="loc_us-gaap_VestingDomain_C39088E92DCEA6DD8664C3F500C316FA_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_VestingDomain" xlink:label="loc_us-gaap_VestingDomain_C39088E92DCEA6DD8664C3F500C316FA" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_VestingAxis_F38BBFA05F19D643AFF7C3F500C3E092" xlink:to="loc_us-gaap_VestingDomain_C39088E92DCEA6DD8664C3F500C316FA" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_SharebasedCompensationAwardTrancheOneMember" xlink:label="loc_adsk_SharebasedCompensationAwardTrancheOneMember_61C28B76FF3FAB240C43C3F500C39F38" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VestingDomain_C39088E92DCEA6DD8664C3F500C316FA" xlink:to="loc_adsk_SharebasedCompensationAwardTrancheOneMember_61C28B76FF3FAB240C43C3F500C39F38" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_SharebasedCompensationAwardTrancheTwoMember" xlink:label="loc_adsk_SharebasedCompensationAwardTrancheTwoMember_82074F51C619016158D4C3F500C4B158" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VestingDomain_C39088E92DCEA6DD8664C3F500C316FA" xlink:to="loc_adsk_SharebasedCompensationAwardTrancheTwoMember_82074F51C619016158D4C3F500C4B158" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_SharebasedCompensationAwardTrancheThreeMember" xlink:label="loc_adsk_SharebasedCompensationAwardTrancheThreeMember_C4FFCA6D48D17264B28EC3F500C4975E" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_VestingDomain_C39088E92DCEA6DD8664C3F500C316FA" xlink:to="loc_adsk_SharebasedCompensationAwardTrancheThreeMember_C4FFCA6D48D17264B28EC3F500C4975E" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_Sharebasedcompensationarrangementsbysharebasedpaymentawardsnumberofactiveplans" xlink:label="loc_adsk_Sharebasedcompensationarrangementsbysharebasedpaymentawardsnumberofactiveplans_4C89D91AFE48D973E264C3F500C4E9A2" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems_DADB0CD382D8518AB7B9C3F500C4353A" xlink:to="loc_adsk_Sharebasedcompensationarrangementsbysharebasedpaymentawardsnumberofactiveplans_4C89D91AFE48D973E264C3F500C4E9A2" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpiredOrTerminatedPlans" xlink:label="loc_adsk_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpiredOrTerminatedPlans_D52A3FBEE1CAAC08FD92C3F500C44109" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems_DADB0CD382D8518AB7B9C3F500C4353A" xlink:to="loc_adsk_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpiredOrTerminatedPlans_D52A3FBEE1CAAC08FD92C3F500C44109" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized_97E279D6B97630A8CBFCC3F500C4846C" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems_DADB0CD382D8518AB7B9C3F500C4353A" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized_97E279D6B97630A8CBFCC3F500C4846C" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_CB744B309B33D89BD8C1C3F500C4C3E2" xlink:type="locator" />
    <definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems_DADB0CD382D8518AB7B9C3F500C4353A" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_CB744B309B33D89BD8C1C3F500C4C3E2" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures_3DE5FCB181B8A8BCB4B8C3F500C4588E" xlink:type="locator" />
    <definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems_DADB0CD382D8518AB7B9C3F500C4353A" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures_3DE5FCB181B8A8BCB4B8C3F500C4588E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationForfeited" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationForfeited_2E3F4502B029845FB9F9C3F500C4C760" xlink:type="locator" />
    <definitionArc order="6" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems_DADB0CD382D8518AB7B9C3F500C4353A" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationForfeited_2E3F4502B029845FB9F9C3F500C4C760" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_ShareBasedCompensationSharesGrantedtoShareIssued" xlink:label="loc_adsk_ShareBasedCompensationSharesGrantedtoShareIssued_21EF4C48E2A9EBAB5307C3F500C47460" xlink:type="locator" />
    <definitionArc order="7" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems_DADB0CD382D8518AB7B9C3F500C4353A" xlink:to="loc_adsk_ShareBasedCompensationSharesGrantedtoShareIssued_21EF4C48E2A9EBAB5307C3F500C47460" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_C42ED4EA38DEC2A546AEC3F500C4D573" xlink:type="locator" />
    <definitionArc order="8" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems_DADB0CD382D8518AB7B9C3F500C4353A" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod_C42ED4EA38DEC2A546AEC3F500C4D573" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_5FFAEADD7156630E5252C3F500C46EF7" xlink:type="locator" />
    <definitionArc order="9" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems_DADB0CD382D8518AB7B9C3F500C4353A" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_5FFAEADD7156630E5252C3F500C46EF7" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationTerm" xlink:label="loc_adsk_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationTerm_EBFDA9BC168FFD582380C3F500C4BBF4" xlink:type="locator" />
    <definitionArc order="10" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems_DADB0CD382D8518AB7B9C3F500C4353A" xlink:to="loc_adsk_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationTerm_EBFDA9BC168FFD582380C3F500C4BBF4" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_EmployeeStockPlanSharesRemainingAvailableForIssuance" xlink:label="loc_adsk_EmployeeStockPlanSharesRemainingAvailableForIssuance_83AB18C253AAEB735873C3F500C4CF57" xlink:type="locator" />
    <definitionArc order="11" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems_DADB0CD382D8518AB7B9C3F500C4353A" xlink:to="loc_adsk_EmployeeStockPlanSharesRemainingAvailableForIssuance_83AB18C253AAEB735873C3F500C4CF57" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SaleOfStockPricePerShare" xlink:label="loc_us-gaap_SaleOfStockPricePerShare_5202BFF1B3E3BD94D875C3F500C55B88" xlink:type="locator" />
    <definitionArc order="12" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems_DADB0CD382D8518AB7B9C3F500C4353A" xlink:to="loc_us-gaap_SaleOfStockPricePerShare_5202BFF1B3E3BD94D875C3F500C55B88" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_7940F6E35241CAF9F2F9C3F500C57F39" xlink:type="locator" />
    <definitionArc order="13" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems_DADB0CD382D8518AB7B9C3F500C4353A" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_7940F6E35241CAF9F2F9C3F500C57F39" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_ShareBasedCompensationNonVestedOptionsOutstandingWeightedAverageRemainingContractualTerm" xlink:label="loc_adsk_ShareBasedCompensationNonVestedOptionsOutstandingWeightedAverageRemainingContractualTerm_BD41C2C3C620B4209E02C3F500C5637C" xlink:type="locator" />
    <definitionArc order="14" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems_DADB0CD382D8518AB7B9C3F500C4353A" xlink:to="loc_adsk_ShareBasedCompensationNonVestedOptionsOutstandingWeightedAverageRemainingContractualTerm_BD41C2C3C620B4209E02C3F500C5637C" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_21B4EC08B6FA25AD71D3C3F500C5086D" xlink:type="locator" />
    <definitionArc order="15" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems_DADB0CD382D8518AB7B9C3F500C4353A" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_21B4EC08B6FA25AD71D3C3F500C5086D" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_D6BD022FE0C9102C7677C3F500C53194" xlink:type="locator" />
    <definitionArc order="16" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems_DADB0CD382D8518AB7B9C3F500C4353A" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue_D6BD022FE0C9102C7677C3F500C53194" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_DAFEE9923727E820477BC3F500C59B9E" xlink:type="locator" />
    <definitionArc order="17" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems_DADB0CD382D8518AB7B9C3F500C4353A" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_DAFEE9923727E820477BC3F500C59B9E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_DBD7C2D397792DC05880C3F500C547CB" xlink:type="locator" />
    <definitionArc order="18" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems_DADB0CD382D8518AB7B9C3F500C4353A" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage_DBD7C2D397792DC05880C3F500C547CB" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpense" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_33AA5BA5B634ED6E38C2C3F500C5DCEB" xlink:type="locator" />
    <definitionArc order="19" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems_DADB0CD382D8518AB7B9C3F500C4353A" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_33AA5BA5B634ED6E38C2C3F500C5DCEB" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_56FCA8DC8E4400179265C3F500C510CC" xlink:type="locator" />
    <definitionArc order="20" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems_DADB0CD382D8518AB7B9C3F500C4353A" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_56FCA8DC8E4400179265C3F500C510CC" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_A678DB178D45E366E43AC3F500C569A3" xlink:type="locator" />
    <definitionArc order="21" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems_DADB0CD382D8518AB7B9C3F500C4353A" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_A678DB178D45E366E43AC3F500C569A3" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_EmployeeStockPurchasePlanMaximumPercentageOfCompensationToPurchaseSharesByEligibleParticipants" xlink:label="loc_adsk_EmployeeStockPurchasePlanMaximumPercentageOfCompensationToPurchaseSharesByEligibleParticipants_093E444B811A11DCB1FCC3F500C5A4D4" xlink:type="locator" />
    <definitionArc order="22" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems_DADB0CD382D8518AB7B9C3F500C4353A" xlink:to="loc_adsk_EmployeeStockPurchasePlanMaximumPercentageOfCompensationToPurchaseSharesByEligibleParticipants_093E444B811A11DCB1FCC3F500C5A4D4" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_EmployeeStockPurchasePlanMinimumPercentageOfCommonStockFairValueDefinedToPurchaseSharesByEligibleParticipants" xlink:label="loc_adsk_EmployeeStockPurchasePlanMinimumPercentageOfCommonStockFairValueDefinedToPurchaseSharesByEligibleParticipants_0E79E58AAF242629B2A8C3F500C52FFE" xlink:type="locator" />
    <definitionArc order="23" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems_DADB0CD382D8518AB7B9C3F500C4353A" xlink:to="loc_adsk_EmployeeStockPurchasePlanMinimumPercentageOfCommonStockFairValueDefinedToPurchaseSharesByEligibleParticipants_0E79E58AAF242629B2A8C3F500C52FFE" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOtherIncreasesDecreasesInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOtherIncreasesDecreasesInPeriod_249B4735979E034214EEC3F500C5D2A5" xlink:type="locator" />
    <definitionArc order="24" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems_DADB0CD382D8518AB7B9C3F500C4353A" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOtherIncreasesDecreasesInPeriod_249B4735979E034214EEC3F500C5D2A5" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOtherIncreasesDecreasesInPeriodPercentageCalculation" xlink:label="loc_adsk_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOtherIncreasesDecreasesInPeriodPercentageCalculation_994E37F95A74834F3902C3F500C5BDCD" xlink:type="locator" />
    <definitionArc order="25" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems_DADB0CD382D8518AB7B9C3F500C4353A" xlink:to="loc_adsk_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOtherIncreasesDecreasesInPeriodPercentageCalculation_994E37F95A74834F3902C3F500C5BDCD" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans_2AE3BB4125FFA80D1861C3F500C5593C" xlink:type="locator" />
    <definitionArc order="26" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems_DADB0CD382D8518AB7B9C3F500C4353A" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans_2AE3BB4125FFA80D1861C3F500C5593C" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedAveragePrice" xlink:label="loc_adsk_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedAveragePrice_B732D16E06225F40AD76C3F500C63B72" xlink:type="locator" />
    <definitionArc order="27" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems_DADB0CD382D8518AB7B9C3F500C4353A" xlink:to="loc_adsk_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedAveragePrice_B732D16E06225F40AD76C3F500C63B72" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_37DF58FD83E817C2331AC3F500C6226F" xlink:type="locator" />
    <definitionArc order="28" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_CompensationRelatedCostsShareBasedPaymentsDisclosureLineItems_DADB0CD382D8518AB7B9C3F500C4353A" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_37DF58FD83E817C2331AC3F500C6226F" xlink:type="arc" />
  </definitionLink>
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/StockBasedCompensationExpenseStockBasedCompensationExpenseDetails" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_2D9D59B3287BC4BF0C0E068043E73C25" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable" xlink:label="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_85B1B960205A9E712788068043E66054" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_2D9D59B3287BC4BF0C0E068043E73C25" xlink:to="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_85B1B960205A9E712788068043E66054" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="loc_us-gaap_AwardTypeAxis_C0C0F7E0E34910986C5E068043E60F5B" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_85B1B960205A9E712788068043E66054" xlink:to="loc_us-gaap_AwardTypeAxis_C0C0F7E0E34910986C5E068043E60F5B" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_766FAD1A1F2EF919870B068043E6BF75_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_C0C0F7E0E34910986C5E068043E60F5B" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_766FAD1A1F2EF919870B068043E6BF75_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_766FAD1A1F2EF919870B068043E6BF75" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_C0C0F7E0E34910986C5E068043E60F5B" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_766FAD1A1F2EF919870B068043E6BF75" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PerformanceSharesMember" xlink:label="loc_us-gaap_PerformanceSharesMember_F3D3A22FC63954EAE46F068043E6C4DE" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_766FAD1A1F2EF919870B068043E6BF75" xlink:to="loc_us-gaap_PerformanceSharesMember_F3D3A22FC63954EAE46F068043E6C4DE" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_RestrictedStockUnitsRSUMember" xlink:label="loc_us-gaap_RestrictedStockUnitsRSUMember_3BEC5B5300B0A6890900068043E63D0B" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_766FAD1A1F2EF919870B068043E6BF75" xlink:to="loc_us-gaap_RestrictedStockUnitsRSUMember_3BEC5B5300B0A6890900068043E63D0B" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncomeStatementLocationAxis" xlink:label="loc_us-gaap_IncomeStatementLocationAxis_350572AE2175E259BE12068043E63BC2" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_85B1B960205A9E712788068043E66054" xlink:to="loc_us-gaap_IncomeStatementLocationAxis_350572AE2175E259BE12068043E63BC2" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncomeStatementLocationDomain" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_520316980EDA12C78683068043E79C7B_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_350572AE2175E259BE12068043E63BC2" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_520316980EDA12C78683068043E79C7B_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_IncomeStatementLocationDomain" xlink:label="loc_us-gaap_IncomeStatementLocationDomain_520316980EDA12C78683068043E79C7B" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_IncomeStatementLocationAxis_350572AE2175E259BE12068043E63BC2" xlink:to="loc_us-gaap_IncomeStatementLocationDomain_520316980EDA12C78683068043E79C7B" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_LicenseCostsMember" xlink:label="loc_adsk_LicenseCostsMember_CC8FE69BEA98EC0F6DF3068043E7BDA0" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_520316980EDA12C78683068043E79C7B" xlink:to="loc_adsk_LicenseCostsMember_CC8FE69BEA98EC0F6DF3068043E7BDA0" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_CostofGoodsSoldSubscriptionMember" xlink:label="loc_adsk_CostofGoodsSoldSubscriptionMember_AE4C7077B0D41CB0455B068043E754A7" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_520316980EDA12C78683068043E79C7B" xlink:to="loc_adsk_CostofGoodsSoldSubscriptionMember_AE4C7077B0D41CB0455B068043E754A7" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_SellingAndMarketingExpenseMember" xlink:label="loc_us-gaap_SellingAndMarketingExpenseMember_C2CD949B623A2E90EC5E068043E7C0AE" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_520316980EDA12C78683068043E79C7B" xlink:to="loc_us-gaap_SellingAndMarketingExpenseMember_C2CD949B623A2E90EC5E068043E7C0AE" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ResearchAndDevelopmentExpenseMember" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpenseMember_0B0B046CE0F6F9C0F30E068043E7FDC5" xlink:type="locator" />
    <definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_520316980EDA12C78683068043E79C7B" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpenseMember_0B0B046CE0F6F9C0F30E068043E7FDC5" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_GeneralAndAdministrativeExpenseMember" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpenseMember_EBBAD6B0498FBC9F6300068043E7A731" xlink:type="locator" />
    <definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_IncomeStatementLocationDomain_520316980EDA12C78683068043E79C7B" xlink:to="loc_us-gaap_GeneralAndAdministrativeExpenseMember_EBBAD6B0498FBC9F6300068043E7A731" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpense" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_535C19B0F9E745114D49068043E78257" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_2D9D59B3287BC4BF0C0E068043E73C25" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_535C19B0F9E745114D49068043E78257" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="loc_us-gaap_ShareBasedCompensation_26B5A766E26B8D8B0EAD068043E79874" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_2D9D59B3287BC4BF0C0E068043E73C25" xlink:to="loc_us-gaap_ShareBasedCompensation_26B5A766E26B8D8B0EAD068043E79874" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_389CA55CCA7F24DCE49B068043E7D07D" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_2D9D59B3287BC4BF0C0E068043E73C25" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense_389CA55CCA7F24DCE49B068043E7D07D" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax_A1F251B2D2A9900D60D0068043E7AFE9" xlink:type="locator" />
    <definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_2D9D59B3287BC4BF0C0E068043E73C25" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax_A1F251B2D2A9900D60D0068043E7AFE9" xlink:type="arc" />
  </definitionLink>
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/StockBasedCompensationExpenseSummaryOfRestrictedStockAwardAndRestrictedStockUnitActivityDetails" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_B931B0817A3B19FF67E9E7F00C12F735" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_A1E91DABC4F7AAED208BE7F00C120B75" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/all" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_B931B0817A3B19FF67E9E7F00C12F735" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_A1E91DABC4F7AAED208BE7F00C120B75" xlink:type="arc" xbrldt:closed="true" xbrldt:contextElement="segment" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="loc_us-gaap_AwardTypeAxis_75446C3BA938EA7C263CE7F00C12EF8B" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/hypercube-dimension" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_A1E91DABC4F7AAED208BE7F00C120B75" xlink:to="loc_us-gaap_AwardTypeAxis_75446C3BA938EA7C263CE7F00C12EF8B" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_00D82828A64E8A9EADB9E7F00C1211B1_default" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-default" xlink:from="loc_us-gaap_AwardTypeAxis_75446C3BA938EA7C263CE7F00C12EF8B" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_00D82828A64E8A9EADB9E7F00C1211B1_default" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_00D82828A64E8A9EADB9E7F00C1211B1" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/dimension-domain" xlink:from="loc_us-gaap_AwardTypeAxis_75446C3BA938EA7C263CE7F00C12EF8B" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_00D82828A64E8A9EADB9E7F00C1211B1" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_RestrictedStockUnitsRSUsandPerformanceSharesMember" xlink:label="loc_adsk_RestrictedStockUnitsRSUsandPerformanceSharesMember_FB2F52A5DC8343A626AAE7F00C129593" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_00D82828A64E8A9EADB9E7F00C1211B1" xlink:to="loc_adsk_RestrictedStockUnitsRSUsandPerformanceSharesMember_FB2F52A5DC8343A626AAE7F00C129593" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_PerformanceSharesMember" xlink:label="loc_us-gaap_PerformanceSharesMember_F38028666E939F0A3E34E7F00C12DACF" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_00D82828A64E8A9EADB9E7F00C1211B1" xlink:to="loc_us-gaap_PerformanceSharesMember_F38028666E939F0A3E34E7F00C12DACF" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_881B6F1801626A651C8DE7F00C12F911" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_B931B0817A3B19FF67E9E7F00C12F735" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_881B6F1801626A651C8DE7F00C12F911" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_0BD600974CF9938F36E1E7F00C13B25C" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_881B6F1801626A651C8DE7F00C12F911" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_0BD600974CF9938F36E1E7F00C13B25C" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_AE9294CF6217579E9B51E7F00C139257" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_881B6F1801626A651C8DE7F00C12F911" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_AE9294CF6217579E9B51E7F00C139257" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_FE01970092BC448022E3E7F00C135EB4" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_881B6F1801626A651C8DE7F00C12F911" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_FE01970092BC448022E3E7F00C135EB4" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_CA552968E05BBB4B0A6EE7F00C131371" xlink:type="locator" />
    <definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_881B6F1801626A651C8DE7F00C12F911" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_CA552968E05BBB4B0A6EE7F00C131371" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustmentsInPeriod" xlink:label="loc_adsk_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustmentsInPeriod_21E2AF7187AE3E2B8838E7F00C13FAD4" xlink:type="locator" />
    <definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_881B6F1801626A651C8DE7F00C12F911" xlink:to="loc_adsk_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustmentsInPeriod_21E2AF7187AE3E2B8838E7F00C13FAD4" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsWeightedAverageGrantDateFairValueRollForward" xlink:label="loc_adsk_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsWeightedAverageGrantDateFairValueRollForward_830357CFF84796C3E5C0E7F00C135F70" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_B931B0817A3B19FF67E9E7F00C12F735" xlink:to="loc_adsk_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsWeightedAverageGrantDateFairValueRollForward_830357CFF84796C3E5C0E7F00C135F70" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_B8EBD3B850CF89B5F992E7F00C137D4F" xlink:type="locator" />
    <definitionArc order="1" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsWeightedAverageGrantDateFairValueRollForward_830357CFF84796C3E5C0E7F00C135F70" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_B8EBD3B850CF89B5F992E7F00C137D4F" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_C17FDD86CCD40951C485E7F00C13A6D7" xlink:type="locator" />
    <definitionArc order="2" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsWeightedAverageGrantDateFairValueRollForward_830357CFF84796C3E5C0E7F00C135F70" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_C17FDD86CCD40951C485E7F00C13A6D7" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_AAA9E5EB3E3EC2DBE5ECE7F00C134B5D" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsWeightedAverageGrantDateFairValueRollForward_830357CFF84796C3E5C0E7F00C135F70" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_AAA9E5EB3E3EC2DBE5ECE7F00C134B5D" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2014/elts/us-gaap-2014-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_5AFFB22BFE9FEADA13A8E7F00C13A30A" xlink:type="locator" />
    <definitionArc order="4" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsWeightedAverageGrantDateFairValueRollForward_830357CFF84796C3E5C0E7F00C135F70" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_5AFFB22BFE9FEADA13A8E7F00C13A30A" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustmentsWeightedAverageGrantDateFairValue" xlink:label="loc_adsk_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustmentsWeightedAverageGrantDateFairValue_EA0DA8A2236EEDCF1422E7F00C14EE52" xlink:type="locator" />
    <definitionArc order="5" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_adsk_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsWeightedAverageGrantDateFairValueRollForward_830357CFF84796C3E5C0E7F00C135F70" xlink:to="loc_adsk_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsAdjustmentsWeightedAverageGrantDateFairValue_EA0DA8A2236EEDCF1422E7F00C14EE52" xlink:type="arc" />
    <loc xlink:href="adsk-20141031.xsd#adsk_PerformanceSharesUnitsPayoutPercentage" xlink:label="loc_adsk_PerformanceSharesUnitsPayoutPercentage_D2667BCFD66F29635498E7F00C142C6D" xlink:type="locator" />
    <definitionArc order="3" xlink:arcrole="http://xbrl.org/int/dim/arcrole/domain-member" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_B931B0817A3B19FF67E9E7F00C12F735" xlink:to="loc_adsk_PerformanceSharesUnitsPayoutPercentage_D2667BCFD66F29635498E7F00C142C6D" xlink:type="arc" />
  </definitionLink>
  <definitionLink xlink:role="http://www.usa.autodesk.com/role/StockBasedCompensationExpenseTables" xlink:type="extended" />
</linkbase>




