<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with Wdesk from Workiva-->
<!--Copyright 2022 Workiva-->
<!--r:30ccb16d-fdd4-4c00-9f3a-3922297a5d9e,g:1343f228-fd04-416a-aee9-20de7d7fd33f-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://pwp.com/role/DocumentandEntityInformationDocument" xlink:type="simple" xlink:href="pwp-20220923.xsd#DocumentandEntityInformationDocument"/>
  <link:presentationLink xlink:role="http://pwp.com/role/DocumentandEntityInformationDocument" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_CoverAbstract_84299e01-4610-4f70-8fb4-e929fbe01979" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_CoverAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_41288ca5-272e-4d71-bb71-7e296de2b3bd" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_DocumentType"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_84299e01-4610-4f70-8fb4-e929fbe01979" xlink:to="loc_dei_DocumentType_41288ca5-272e-4d71-bb71-7e296de2b3bd" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_8fc57c08-f19f-4d92-a6b9-1f09f73e8d35" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_DocumentPeriodEndDate"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_84299e01-4610-4f70-8fb4-e929fbe01979" xlink:to="loc_dei_DocumentPeriodEndDate_8fc57c08-f19f-4d92-a6b9-1f09f73e8d35" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_75a17e6f-1381-437e-8e9b-7f112dd98a07" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityFileNumber"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_84299e01-4610-4f70-8fb4-e929fbe01979" xlink:to="loc_dei_EntityFileNumber_75a17e6f-1381-437e-8e9b-7f112dd98a07" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_926232f9-8e1f-4b80-984d-c34ca134b404" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityRegistrantName"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_84299e01-4610-4f70-8fb4-e929fbe01979" xlink:to="loc_dei_EntityRegistrantName_926232f9-8e1f-4b80-984d-c34ca134b404" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_6ecf8f6b-fdfb-492e-9920-3641ae5440ba" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_84299e01-4610-4f70-8fb4-e929fbe01979" xlink:to="loc_dei_EntityIncorporationStateCountryCode_6ecf8f6b-fdfb-492e-9920-3641ae5440ba" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_b39744c9-9536-4890-9232-357aa87901de" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_84299e01-4610-4f70-8fb4-e929fbe01979" xlink:to="loc_dei_EntityTaxIdentificationNumber_b39744c9-9536-4890-9232-357aa87901de" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_7c0442e5-da63-4c5c-9fbf-cce59c14e721" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityAddressAddressLine1"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_84299e01-4610-4f70-8fb4-e929fbe01979" xlink:to="loc_dei_EntityAddressAddressLine1_7c0442e5-da63-4c5c-9fbf-cce59c14e721" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_907792d5-1099-4371-87d1-af96889a8261" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityAddressCityOrTown"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_84299e01-4610-4f70-8fb4-e929fbe01979" xlink:to="loc_dei_EntityAddressCityOrTown_907792d5-1099-4371-87d1-af96889a8261" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_4c429f68-058b-402c-805b-d666115fad5c" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityAddressStateOrProvince"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_84299e01-4610-4f70-8fb4-e929fbe01979" xlink:to="loc_dei_EntityAddressStateOrProvince_4c429f68-058b-402c-805b-d666115fad5c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_b9517ba1-1a27-4d57-b8aa-f8964d226c23" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityAddressPostalZipCode"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_84299e01-4610-4f70-8fb4-e929fbe01979" xlink:to="loc_dei_EntityAddressPostalZipCode_b9517ba1-1a27-4d57-b8aa-f8964d226c23" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_86444286-9f41-4593-af0d-652bbe9224d0" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_CityAreaCode"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_84299e01-4610-4f70-8fb4-e929fbe01979" xlink:to="loc_dei_CityAreaCode_86444286-9f41-4593-af0d-652bbe9224d0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_ddf61e1c-6da3-410b-88d3-0621221827c5" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_LocalPhoneNumber"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_84299e01-4610-4f70-8fb4-e929fbe01979" xlink:to="loc_dei_LocalPhoneNumber_ddf61e1c-6da3-410b-88d3-0621221827c5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_WrittenCommunications_a85ef886-a18f-4b8c-899b-3336715934be" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_WrittenCommunications"/>
    <link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_84299e01-4610-4f70-8fb4-e929fbe01979" xlink:to="loc_dei_WrittenCommunications_a85ef886-a18f-4b8c-899b-3336715934be" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SolicitingMaterial_e9f81e4c-dd65-44c3-be81-c8db3e9d508a" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_SolicitingMaterial"/>
    <link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_84299e01-4610-4f70-8fb4-e929fbe01979" xlink:to="loc_dei_SolicitingMaterial_e9f81e4c-dd65-44c3-be81-c8db3e9d508a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementTenderOffer_d5cfa21d-ec50-4d45-9757-0cbad49b5bf8" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_PreCommencementTenderOffer"/>
    <link:presentationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_84299e01-4610-4f70-8fb4-e929fbe01979" xlink:to="loc_dei_PreCommencementTenderOffer_d5cfa21d-ec50-4d45-9757-0cbad49b5bf8" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementIssuerTenderOffer_1957075a-b54a-4c0f-8e9b-cf01d171be07" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_PreCommencementIssuerTenderOffer"/>
    <link:presentationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_84299e01-4610-4f70-8fb4-e929fbe01979" xlink:to="loc_dei_PreCommencementIssuerTenderOffer_1957075a-b54a-4c0f-8e9b-cf01d171be07" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_73449819-5f9f-42f9-8bdf-2f486a5c4e2d" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_Security12bTitle"/>
    <link:presentationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_84299e01-4610-4f70-8fb4-e929fbe01979" xlink:to="loc_dei_Security12bTitle_73449819-5f9f-42f9-8bdf-2f486a5c4e2d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_0626cc67-da7c-4bd1-bab6-c00fb46b1488" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_TradingSymbol"/>
    <link:presentationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_84299e01-4610-4f70-8fb4-e929fbe01979" xlink:to="loc_dei_TradingSymbol_0626cc67-da7c-4bd1-bab6-c00fb46b1488" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_7fcd1b77-e863-4ca0-ad4e-ae8613daa82d" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_SecurityExchangeName"/>
    <link:presentationArc order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_84299e01-4610-4f70-8fb4-e929fbe01979" xlink:to="loc_dei_SecurityExchangeName_7fcd1b77-e863-4ca0-ad4e-ae8613daa82d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_d16e348f-b5e5-4406-a148-9e469ccf7571" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:presentationArc order="20" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_84299e01-4610-4f70-8fb4-e929fbe01979" xlink:to="loc_dei_EntityEmergingGrowthCompany_d16e348f-b5e5-4406-a148-9e469ccf7571" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityExTransitionPeriod_99e09c8b-a698-41d9-84b4-04bc2addd56c" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityExTransitionPeriod"/>
    <link:presentationArc order="21" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_84299e01-4610-4f70-8fb4-e929fbe01979" xlink:to="loc_dei_EntityExTransitionPeriod_99e09c8b-a698-41d9-84b4-04bc2addd56c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_224d3b72-ab23-4ad9-8f4b-eb103afc7870" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_EntityCentralIndexKey"/>
    <link:presentationArc order="22" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_84299e01-4610-4f70-8fb4-e929fbe01979" xlink:to="loc_dei_EntityCentralIndexKey_224d3b72-ab23-4ad9-8f4b-eb103afc7870" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_7f51a485-f409-4fc9-afcc-5e426db83174" xlink:href="https://xbrl.sec.gov/dei/2021q4/dei-2021q4.xsd#dei_AmendmentFlag"/>
    <link:presentationArc order="23" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_84299e01-4610-4f70-8fb4-e929fbe01979" xlink:to="loc_dei_AmendmentFlag_7f51a485-f409-4fc9-afcc-5e426db83174" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
</link:linkbase>
