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  <xs:element id="pwp_EstimatedPaymentsUnderTaxReceivableAgreementRemainderOfFiscalYear" abstract="false" name="EstimatedPaymentsUnderTaxReceivableAgreementRemainderOfFiscalYear" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="pwp_OneSevenPriceTrancheMember" abstract="true" name="OneSevenPriceTrancheMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pwp_LossContingencyPendingCounterclaimsNumber" abstract="false" name="LossContingencyPendingCounterclaimsNumber" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="pwp_FederalFundsRateMember" abstract="true" name="FederalFundsRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pwp_LegacyAwardsMember" abstract="true" name="LegacyAwardsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pwp_NumberOfFounderShares" abstract="false" name="NumberOfFounderShares" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
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  <xs:element id="pwp_WorkingPartnersMember" abstract="true" name="WorkingPartnersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
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  <xs:element id="pwp_PrivateWarrantsMember" abstract="true" name="PrivateWarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pwp_DilutiveSecuritiesEffectOnBasicEarningsPerShareOtherUnits" abstract="false" name="DilutiveSecuritiesEffectOnBasicEarningsPerShareOtherUnits" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="pwp_ClassOfWarrantOrRightExercisedOrRedeemed" abstract="false" name="ClassOfWarrantOrRightExercisedOrRedeemed" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
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  <xs:element id="pwp_SoftwareMember" abstract="true" name="SoftwareMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pwp_PrivateWarrantMember" abstract="true" name="PrivateWarrantMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pwp_LessorSubleaseIncomeToBeReceivedYearTwo" abstract="false" name="LessorSubleaseIncomeToBeReceivedYearTwo" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pwp_CommonStockNumberOfVotingRightsWithCeasedThresholdPercentage" abstract="false" name="CommonStockNumberOfVotingRightsWithCeasedThresholdPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
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  <xs:element id="pwp_AccruedDividendsOnUnvestedRestrictedStockUnit" abstract="false" name="AccruedDividendsOnUnvestedRestrictedStockUnit" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="pwp_ParisOfficeMember" abstract="true" name="ParisOfficeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pwp_RestrictedStockUnitsRSUsAndPhantomShareUnitsPSUsMember" abstract="true" name="RestrictedStockUnitsRSUsAndPhantomShareUnitsPSUsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pwp_MinimumPercentageCondition" abstract="false" name="MinimumPercentageCondition" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="pwp_PerellaWeinbergPartners2021OmnibusIncentivePlanMember" abstract="true" name="PerellaWeinbergPartners2021OmnibusIncentivePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pwp_PendingDismissalMember" abstract="true" name="PendingDismissalMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pwp_MarketConditionSharePriceRequirement" abstract="false" name="MarketConditionSharePriceRequirement" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="pwp_LessorSubleaseRentalsPaymentsToBeReceived" abstract="false" name="LessorSubleaseRentalsPaymentsToBeReceived" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="pwp_LessorSubleaseIncomeToBeReceivedYearOne" abstract="false" name="LessorSubleaseIncomeToBeReceivedYearOne" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pwp_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodGrantDateFairValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodGrantDateFairValue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="pwp_MaximumIncrementalRevolvingCommitments" abstract="false" name="MaximumIncrementalRevolvingCommitments" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pwp_FairValueMeasurementsAndInvestmentsDisclosureTextBlock" abstract="false" name="FairValueMeasurementsAndInvestmentsDisclosureTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="pwp_IncreaseDecreaseInOperatingLeaseRightOfUseAsset" abstract="false" name="IncreaseDecreaseInOperatingLeaseRightOfUseAsset" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="pwp_RegulatoryRequirementsAbstract" abstract="true" name="RegulatoryRequirementsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="pwp_PendingMotionForLeaveToRenewMember" abstract="true" name="PendingMotionForLeaveToRenewMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pwp_TaxReceivableAgreementTaxSavingsPercentage" abstract="false" name="TaxReceivableAgreementTaxSavingsPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="pwp_PaymentForTheExchangeOfPartnershipUnits" abstract="false" name="PaymentForTheExchangeOfPartnershipUnits" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pwp_AdjustmentsToAdditionalPaidInCapitalChangeInOwnershipInterestValue" abstract="false" name="AdjustmentsToAdditionalPaidInCapitalChangeInOwnershipInterestValue" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="pwp_TwoCustomersMember" abstract="true" name="TwoCustomersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pwp_WarrantsAndRightsOutstandingFairValueAssumptionsExpectedDividendRate" abstract="false" name="WarrantsAndRightsOutstandingFairValueAssumptionsExpectedDividendRate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="pwp_FairValueMeasurementsAndInvestmentsAbstract" abstract="true" name="FairValueMeasurementsAndInvestmentsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="pwp_OperatingLeaseLiabilitiesNetMinimumPaymentsDueYearFour" abstract="false" name="OperatingLeaseLiabilitiesNetMinimumPaymentsDueYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pwp_NonCashPaydownOfPartnerPromissoryNotes" abstract="false" name="NonCashPaydownOfPartnerPromissoryNotes" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="pwp_CommonStockForfeited" abstract="false" name="CommonStockForfeited" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="pwp_EstimatedPaymentsUnderTaxReceivableAgreementAfterYearFour" abstract="false" name="EstimatedPaymentsUnderTaxReceivableAgreementAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="pwp_ReimbursableExpensesRecordedAsRevenue" abstract="false" name="ReimbursableExpensesRecordedAsRevenue" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="pwp_PeriodFounderSharesMayBePurchased" abstract="false" name="PeriodFounderSharesMayBePurchased" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
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  <xs:element id="pwp_EntityControlledByDirectorMember" abstract="true" name="EntityControlledByDirectorMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pwp_StockholderAgreementPercentCondition" abstract="false" name="StockholderAgreementPercentCondition" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
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  <xs:element id="pwp_PartnersMember" abstract="true" name="PartnersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pwp_SixtyMonthsTrancheMember" abstract="true" name="SixtyMonthsTrancheMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pwp_PublicWarrantMember" abstract="true" name="PublicWarrantMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pwp_SponsorRelatedPipeInvestorsMember" abstract="true" name="SponsorRelatedPipeInvestorsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pwp_FourtyEightMonthsTrancheMember" abstract="true" name="FourtyEightMonthsTrancheMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pwp_ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationGrantDateFairValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardPlanModificationGrantDateFairValue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="pwp_CommonStockForfeitedValuePerShare" abstract="false" name="CommonStockForfeitedValuePerShare" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="pwp_FollowOnPublicOfferingMember" abstract="true" name="FollowOnPublicOfferingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pwp_FounderSharePurchaseOptionMember" abstract="true" name="FounderSharePurchaseOptionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pwp_DividendsRate" abstract="false" name="DividendsRate" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="pwp_LossContingencyPendingPlaintiffsClaimsNumber" abstract="false" name="LossContingencyPendingPlaintiffsClaimsNumber" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
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  <xs:element id="pwp_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour" abstract="false" name="LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
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  <xs:element id="pwp_TrancheFourMember" abstract="true" name="TrancheFourMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pwp_SponsorMember" abstract="true" name="SponsorMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pwp_PrepaidExpensesAndOtherAssetsPolicyPolicyTextBlock" abstract="false" name="PrepaidExpensesAndOtherAssetsPolicyPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="pwp_OperatingLeaseLiabilitiesNetMinimumPaymentsDueAbstract" abstract="true" name="OperatingLeaseLiabilitiesNetMinimumPaymentsDueAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="pwp_PercentageOfSharesOutstanding" abstract="false" name="PercentageOfSharesOutstanding" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="pwp_PublicWarrantsMember" abstract="true" name="PublicWarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pwp_ThirtySixMonthsTrancheMember" abstract="true" name="ThirtySixMonthsTrancheMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pwp_AccountsReceivableSubsequentlyReceived" abstract="false" name="AccountsReceivableSubsequentlyReceived" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pwp_PrivatePlacementWarrantsMember" abstract="true" name="PrivatePlacementWarrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pwp_FtivAndOtherPartiesMember" abstract="true" name="FtivAndOtherPartiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pwp_CombinedLeverageRatio3" abstract="false" name="CombinedLeverageRatio3" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="pwp_DistributionRate" abstract="false" name="DistributionRate" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="pwp_IncentivePlanAwardsMember" abstract="true" name="IncentivePlanAwardsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pwp_ExistingInvestorLimitedPartnersMember" abstract="true" name="ExistingInvestorLimitedPartnersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pwp_OneThreePointFiveZeroPriceTrancheMember" abstract="true" name="OneThreePointFiveZeroPriceTrancheMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pwp_CommonStockOwnershipPercentageThreshold" abstract="false" name="CommonStockOwnershipPercentageThreshold" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="pwp_LegacyAwardsAndProfessionalPartnersAwardsMember" abstract="true" name="LegacyAwardsAndProfessionalPartnersAwardsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pwp_EstimatedPaymentsUnderTaxReceivableAgreementYearTwo" abstract="false" name="EstimatedPaymentsUnderTaxReceivableAgreementYearTwo" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pwp_TransactionPoolPsusMember" abstract="true" name="TransactionPoolPsusMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pwp_ThresholdPeriodRequiredForSatisfyCertainConditions" abstract="false" name="ThresholdPeriodRequiredForSatisfyCertainConditions" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="pwp_LessorSubleaseIncomeToBeReceivedAfterYearFour" abstract="false" name="LessorSubleaseIncomeToBeReceivedAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pwp_DeferredCompensationArrangementWithIndividualForfeitedAmount" abstract="false" name="DeferredCompensationArrangementWithIndividualForfeitedAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pwp_CadenceBankPrimeRateMember" abstract="true" name="CadenceBankPrimeRateMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pwp_EstimatedPaymentsUnderTaxReceivableAgreementYearThree" abstract="false" name="EstimatedPaymentsUnderTaxReceivableAgreementYearThree" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pwp_CombinedLeverageRatio1" abstract="false" name="CombinedLeverageRatio1" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="pwp_NumberOfClientsOverTenPercentBenchmark" abstract="false" name="NumberOfClientsOverTenPercentBenchmark" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="pwp_LessorSubleaseIncomeToBeReceivedYearThree" abstract="false" name="LessorSubleaseIncomeToBeReceivedYearThree" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pwp_ElectingFormerWorkingPartnersMember" abstract="true" name="ElectingFormerWorkingPartnersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pwp_ScheduleOfEstimatedPaymentsUnderTaxReceivableAgreementTableTextBlock" abstract="false" name="ScheduleOfEstimatedPaymentsUnderTaxReceivableAgreementTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="pwp_LockUpPeriod" abstract="false" name="LockUpPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="pwp_NonControllingInterestPolicyTextBlock" abstract="false" name="NonControllingInterestPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="pwp_TrancheOneMember" abstract="true" name="TrancheOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pwp_MinimumSharePriceAndPurchasePrice" abstract="false" name="MinimumSharePriceAndPurchasePrice" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="pwp_OperatingLeaseLiabilitiesNetMinimumPaymentsDueYearThree" abstract="false" name="OperatingLeaseLiabilitiesNetMinimumPaymentsDueYearThree" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pwp_OperatingLeaseLiabilitiesNetMinimumPaymentsDueYearTwo" abstract="false" name="OperatingLeaseLiabilitiesNetMinimumPaymentsDueYearTwo" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pwp_AccruedTreasuryStockPurchases" abstract="false" name="AccruedTreasuryStockPurchases" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pwp_TrancheTwoMember" abstract="true" name="TrancheTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pwp_CommonStockNumberOfVotingRights" abstract="false" name="CommonStockNumberOfVotingRights" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="pwp_TSACompensationRelatedMember" abstract="true" name="TSACompensationRelatedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pwp_LessorSubleaseIncomeToBeReceivedYearFour" abstract="false" name="LessorSubleaseIncomeToBeReceivedYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pwp_RelatedPartyIncomeAbstract" abstract="true" name="RelatedPartyIncomeAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
</xs:schema>
