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<!-- Creation Date :2022-08-05T14:57:43.3131+00:00 -->
<!-- Copyright (c) 2022 Donnelly Financial Solutions, Inc. All Rights Reserved. -->
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  <xsd:element id="ptc_DebtInstrumentCovenantComplianceLeverageRatioFour" name="DebtInstrumentCovenantComplianceLeverageRatioFour" type="xbrli:pureItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ptc_DebtInstrumentCovenantComplianceSeniorDebtLeverageRatio" name="DebtInstrumentCovenantComplianceSeniorDebtLeverageRatio" type="xbrli:pureItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ptc_DebtInstrumentCovenantComplianceSeniorDebtLeverageRatioactual" name="DebtInstrumentCovenantComplianceSeniorDebtLeverageRatioactual" type="xbrli:pureItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ptc_DivestituresOfBusinessesAndAssetsNet" name="DivestituresOfBusinessesAndAssetsNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ptc_EffectiveIncomeTaxRateGainOnSaleOfPlmServiceBusiness" name="EffectiveIncomeTaxRateGainOnSaleOfPlmServiceBusiness" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ptc_EffectiveIncomeTaxRateReconciliationTaxDeductibleGoodWillAmount" name="EffectiveIncomeTaxRateReconciliationTaxDeductibleGoodWillAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ptc_FairValueAdjustmentsRelatedToPurchaseAccountingForAcquisition" name="FairValueAdjustmentsRelatedToPurchaseAccountingForAcquisition" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ptc_GainOnSale" name="GainOnSale" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ptc_GrossDebt" name="GrossDebt" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ptc_IncreaseDecreaseInOperatingLeaseLiabilities" name="IncreaseDecreaseInOperatingLeaseLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ptc_InterestCoverageRatioActual" name="InterestCoverageRatioActual" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ptc_InvestmentInForeignSubsidiariesAuthorizedAmount" name="InvestmentInForeignSubsidiariesAuthorizedAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ptc_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour" name="LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ptc_LesseeOperatingLeasesLeasesNotYetCommencedValue" name="LesseeOperatingLeasesLeasesNotYetCommencedValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ptc_LeverageRatioActual" name="LeverageRatioActual" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ptc_LicenseRevenue" name="LicenseRevenue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ptc_LineofCreditFacilityMaximumBorrowingCapacityExpansionAmount" name="LineofCreditFacilityMaximumBorrowingCapacityExpansionAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ptc_LineOfCreditFacilityVariableInterestRateLengthOfTimeBetweenUpdates" name="LineOfCreditFacilityVariableInterestRateLengthOfTimeBetweenUpdates" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ptc_NonCashConsideration" name="NonCashConsideration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ptc_NonMarketableEquityInvestments" name="NonMarketableEquityInvestments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ptc_NonMarketableSecuritiesFvNiGainLoss" name="NonMarketableSecuritiesFvNiGainLoss" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ptc_NumberOfEmployees" name="NumberOfEmployees" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ptc_NumberOfEqualAnnualInstallments" name="NumberOfEqualAnnualInstallments" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ptc_OperatingLeaseLiabilityNetRestructuredFacilities" name="OperatingLeaseLiabilityNetRestructuredFacilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ptc_OperatingLeaseNotCommencedFutureLeasePayments" name="OperatingLeaseNotCommencedFutureLeasePayments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ptc_OperatingLeasesMaximumExpirationYear" name="OperatingLeasesMaximumExpirationYear" type="xbrli:gYearItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ptc_OtherComprehensiveIncomeLossGeneralHedgeGainLossBeforeReclassificationAfterTax" name="OtherComprehensiveIncomeLossGeneralHedgeGainLossBeforeReclassificationAfterTax" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ptc_OtherComprehensiveIncomeLossGeneralHedgeGainLossBeforeReclassificationTaxBenefitAmount" name="OtherComprehensiveIncomeLossGeneralHedgeGainLossBeforeReclassificationTaxBenefitAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ptc_OtherComprehensiveIncomeLossPensionandOtherPostretirementBenefitPlansNetUnamortizedGainLossofForeignCurrencyArisingDuringPeriodNetofTax" name="OtherComprehensiveIncomeLossPensionandOtherPostretirementBenefitPlansNetUnamortizedGainLossofForeignCurrencyArisingDuringPeriodNetofTax" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ptc_OtherProfessionalFees" name="OtherProfessionalFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ptc_PlaintiffsClaim" name="PlaintiffsClaim" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ptc_ProceedsFromMaturityOfMarketableSecurities" name="ProceedsFromMaturityOfMarketableSecurities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ptc_ProceedsFromSaleOfInvestments" name="ProceedsFromSaleOfInvestments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ptc_ProceedsFromSaleOfMarketableSecurities" name="ProceedsFromSaleOfMarketableSecurities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ptc_ProfessionalServicesRevenue" name="ProfessionalServicesRevenue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ptc_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPercentage" name="RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ptc_SaleOfInvestment" name="SaleOfInvestment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ptc_ServicesProvided" name="ServicesProvided" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ptc_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNumberOfRSUs" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNumberOfRSUs" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ptc_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPercentageOfNumberOfRSUs" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPercentageOfNumberOfRSUs" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ptc_SharesSurrenderedByEmployeesToPayTaxesRelatedToStockBasedAwardsShares" name="SharesSurrenderedByEmployeesToPayTaxesRelatedToStockBasedAwardsShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ptc_SharesSurrenderedByEmployeesToPayTaxesRelatedToStockBasedAwardsValue" name="SharesSurrenderedByEmployeesToPayTaxesRelatedToStockBasedAwardsValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ptc_ShortTermandLongTermAccountsReceivable" name="ShortTermandLongTermAccountsReceivable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ptc_SoftwareRevenue" name="SoftwareRevenue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ptc_SubleaseIncomeAssumed" name="SubleaseIncomeAssumed" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ptc_SubleaseIncomeCorporateHeadquarters" name="SubleaseIncomeCorporateHeadquarters" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ptc_SupportAndCloudServicesRevenue" name="SupportAndCloudServicesRevenue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ptc_TotalConsideration" name="TotalConsideration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ptc_UnallocatedOperatingExpenses" name="UnallocatedOperatingExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ptc_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRateResultingChangeInValuationAllowance" name="UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRateResultingChangeInValuationAllowance" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ptc_Votinginterestindomesticsubsidiariespledgedagainstcreditfacility" name="Votinginterestindomesticsubsidiariespledgedagainstcreditfacility" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ptc_VotingInterestInForeignSubsidiariesPledgedAgainstCreditFacility" name="VotingInterestInForeignSubsidiariesPledgedAgainstCreditFacility" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ptc_WithholdingTaxesInConnectionWithStockBasedAwardsAccrued" name="WithholdingTaxesInConnectionWithStockBasedAwardsAccrued" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ptc_RevenueRemainingPerformanceObligationAmountDomain" name="RevenueRemainingPerformanceObligationAmountDomain" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_IncomeTaxDisclosureLineItems" name="IncomeTaxDisclosureLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_A3625Seniornotesdue2025Member" name="A3625Seniornotesdue2025Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_A4000Seniornotesdue2028Member" name="A4000Seniornotesdue2028Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_AcquisitionMember" name="AcquisitionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_ArenaSolutionsMember" name="ArenaSolutionsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_CapitalizedSoftwareMember" name="CapitalizedSoftwareMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_CatchUpProvisionMember" name="CatchUpProvisionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_DivestitureOfBusinessMember" name="DivestitureOfBusinessMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_ForeignCurrencyForwardsMember" name="ForeignCurrencyForwardsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_ForeignExchangeForwardContractAndOptionsMember" name="ForeignExchangeForwardContractAndOptionsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_ForeignSubsidiaryMember" name="ForeignSubsidiaryMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_ImpairmentandAccretionExitedLeaseFacilitiesMember" name="ImpairmentandAccretionExitedLeaseFacilitiesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_ImpairmentAndAccretionExpenseRelatedToExitedFacilitiesMember" name="ImpairmentAndAccretionExpenseRelatedToExitedFacilitiesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_InterestandOtherExpenseNetMember" name="InterestandOtherExpenseNetMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_IntlandSoftwareMember" name="IntlandSoftwareMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_IntlandSolutionMember" name="IntlandSolutionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_MatterportIncMember" name="MatterportIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_MaximumTwoTimesMember" name="MaximumTwoTimesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_NonMarketableEquityInvestmentMember" name="NonMarketableEquityInvestmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_PerpetualLicenseMember" name="PerpetualLicenseMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_PlmServicesBusinessDispositionMember" name="PlmServicesBusinessDispositionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_PriorPeriodPerformanceBasedAwardsMember" name="PriorPeriodPerformanceBasedAwardsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_PriorPeriodRtsrAwardsMember" name="PriorPeriodRtsrAwardsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_ProfessionalServicesMember" name="ProfessionalServicesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_PTCPriorRestructuringMember" name="PTCPriorRestructuringMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_PTCRestructuringPlan2022Member" name="PTCRestructuringPlan2022Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_PutativeClassActionMember" name="PutativeClassActionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_RecurringServicesMember" name="RecurringServicesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_RestructuredFacilitiesMember" name="RestructuredFacilitiesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_RestructuringPlan2020Member" name="RestructuringPlan2020Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_RestructuringPlan2022Member" name="RestructuringPlan2022Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_RevolvingLoanResetPeriodOneMember" name="RevolvingLoanResetPeriodOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_RtsrUnitsMember" name="RtsrUnitsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_SaasTransformationMember" name="SaasTransformationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_SegmentSoftwareProductsMember" name="SegmentSoftwareProductsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_ServiceToBePerformedMember" name="ServiceToBePerformedMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_SoftwareMember" name="SoftwareMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_SubleaseIncomeCommittedMember" name="SubleaseIncomeCommittedMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_SupportAndCloudServicesMember" name="SupportAndCloudServicesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_TSRUnitsMember" name="TSRUnitsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_UnrecordedMember" name="UnrecordedMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_IncomeTaxDisclosureTable" name="IncomeTaxDisclosureTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_RevenueFromContractsWithCustomersTable" name="RevenueFromContractsWithCustomersTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ptc_EarningsPerShareAndCommonStockTextBlock" name="EarningsPerShareAndCommonStockTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ptc_ScheduleOfAmortizationOfFiniteLivedIntangibleAssetsTableTextBlock" name="ScheduleOfAmortizationOfFiniteLivedIntangibleAssetsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ptc_ScheduleOfIncomeTaxTableTextBlock" name="ScheduleOfIncomeTaxTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
</xsd:schema>
