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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2023 Workiva-->
<!--r:ef78cc0d-8e0f-49aa-8a59-da715dfca73d,g:02494d20-8a1c-442a-924a-c641507bc5b1-->
<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/Cover" xlink:type="simple" xlink:href="pwp-20231107.xsd#Cover"/>
  <link:presentationLink xlink:role="http://pwp.com/role/Cover" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_CoverAbstract_89832cd1-f643-4380-8e6b-7db4dc2c7971" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_CoverAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_85a1a4f1-636c-455e-82e9-7cfde6f5836b" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_DocumentType"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_89832cd1-f643-4380-8e6b-7db4dc2c7971" xlink:to="loc_dei_DocumentType_85a1a4f1-636c-455e-82e9-7cfde6f5836b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentPeriodEndDate_af7f77dc-5e1e-44d8-9975-a84c7dc1c104" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_DocumentPeriodEndDate"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_89832cd1-f643-4380-8e6b-7db4dc2c7971" xlink:to="loc_dei_DocumentPeriodEndDate_af7f77dc-5e1e-44d8-9975-a84c7dc1c104" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityFileNumber_f6871ccf-9bec-48fb-9900-37b5cb507692" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityFileNumber"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_89832cd1-f643-4380-8e6b-7db4dc2c7971" xlink:to="loc_dei_EntityFileNumber_f6871ccf-9bec-48fb-9900-37b5cb507692" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_fa37a1d3-ab98-4081-866c-e66b4f3423c2" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityRegistrantName"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_89832cd1-f643-4380-8e6b-7db4dc2c7971" xlink:to="loc_dei_EntityRegistrantName_fa37a1d3-ab98-4081-866c-e66b4f3423c2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityIncorporationStateCountryCode_fa7c2921-4a06-4649-9926-e8aecbd9865a" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityIncorporationStateCountryCode"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_89832cd1-f643-4380-8e6b-7db4dc2c7971" xlink:to="loc_dei_EntityIncorporationStateCountryCode_fa7c2921-4a06-4649-9926-e8aecbd9865a" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityTaxIdentificationNumber_3092326c-6342-487b-a77d-12a4e6db9b34" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityTaxIdentificationNumber"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_89832cd1-f643-4380-8e6b-7db4dc2c7971" xlink:to="loc_dei_EntityTaxIdentificationNumber_3092326c-6342-487b-a77d-12a4e6db9b34" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_b20a366e-e2bc-452b-9fae-294f6f0797f0" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityAddressAddressLine1"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_89832cd1-f643-4380-8e6b-7db4dc2c7971" xlink:to="loc_dei_EntityAddressAddressLine1_b20a366e-e2bc-452b-9fae-294f6f0797f0" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_a1ca7817-1161-4669-ae7c-871e5a87784c" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityAddressCityOrTown"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_89832cd1-f643-4380-8e6b-7db4dc2c7971" xlink:to="loc_dei_EntityAddressCityOrTown_a1ca7817-1161-4669-ae7c-871e5a87784c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_683a5554-c669-4b04-a28a-e3e6b8aca6bb" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityAddressStateOrProvince"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_89832cd1-f643-4380-8e6b-7db4dc2c7971" xlink:to="loc_dei_EntityAddressStateOrProvince_683a5554-c669-4b04-a28a-e3e6b8aca6bb" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_b4ab162c-d678-47ff-9136-73c6174833c7" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityAddressPostalZipCode"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_89832cd1-f643-4380-8e6b-7db4dc2c7971" xlink:to="loc_dei_EntityAddressPostalZipCode_b4ab162c-d678-47ff-9136-73c6174833c7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_dc455339-357d-444d-a9ad-410651ce41b2" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_CityAreaCode"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_89832cd1-f643-4380-8e6b-7db4dc2c7971" xlink:to="loc_dei_CityAreaCode_dc455339-357d-444d-a9ad-410651ce41b2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_3ab2dd1f-de7f-4f3b-9568-badb7a28d606" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_LocalPhoneNumber"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_89832cd1-f643-4380-8e6b-7db4dc2c7971" xlink:to="loc_dei_LocalPhoneNumber_3ab2dd1f-de7f-4f3b-9568-badb7a28d606" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_WrittenCommunications_7c2c2e90-d706-4da3-b71a-b1ef1fa711f1" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_WrittenCommunications"/>
    <link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_89832cd1-f643-4380-8e6b-7db4dc2c7971" xlink:to="loc_dei_WrittenCommunications_7c2c2e90-d706-4da3-b71a-b1ef1fa711f1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SolicitingMaterial_fe54d157-8ae2-4eb4-a775-884670443de2" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_SolicitingMaterial"/>
    <link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_89832cd1-f643-4380-8e6b-7db4dc2c7971" xlink:to="loc_dei_SolicitingMaterial_fe54d157-8ae2-4eb4-a775-884670443de2" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementTenderOffer_c9d56bf0-31b1-40de-ab0d-4e194f7fc348" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_PreCommencementTenderOffer"/>
    <link:presentationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_89832cd1-f643-4380-8e6b-7db4dc2c7971" xlink:to="loc_dei_PreCommencementTenderOffer_c9d56bf0-31b1-40de-ab0d-4e194f7fc348" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_PreCommencementIssuerTenderOffer_715bec40-eb87-41e4-bfc7-aa80680484e1" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_PreCommencementIssuerTenderOffer"/>
    <link:presentationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_89832cd1-f643-4380-8e6b-7db4dc2c7971" xlink:to="loc_dei_PreCommencementIssuerTenderOffer_715bec40-eb87-41e4-bfc7-aa80680484e1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_Security12bTitle_aea51ca7-e518-4d6c-9ac6-0754d9f6ef44" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_Security12bTitle"/>
    <link:presentationArc order="17" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_89832cd1-f643-4380-8e6b-7db4dc2c7971" xlink:to="loc_dei_Security12bTitle_aea51ca7-e518-4d6c-9ac6-0754d9f6ef44" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_TradingSymbol_8c712ada-7b7f-4f1f-8435-c2c85014ccd5" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_TradingSymbol"/>
    <link:presentationArc order="18" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_89832cd1-f643-4380-8e6b-7db4dc2c7971" xlink:to="loc_dei_TradingSymbol_8c712ada-7b7f-4f1f-8435-c2c85014ccd5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_SecurityExchangeName_bc121fbe-af89-47ef-bd65-12579383296d" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_SecurityExchangeName"/>
    <link:presentationArc order="19" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_89832cd1-f643-4380-8e6b-7db4dc2c7971" xlink:to="loc_dei_SecurityExchangeName_bc121fbe-af89-47ef-bd65-12579383296d" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_95011518-d7b8-448e-bc20-7dc66f3c5057" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:presentationArc order="20" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_89832cd1-f643-4380-8e6b-7db4dc2c7971" xlink:to="loc_dei_EntityEmergingGrowthCompany_95011518-d7b8-448e-bc20-7dc66f3c5057" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityExTransitionPeriod_9facca0a-2b71-4a3a-8c3f-610163773b99" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityExTransitionPeriod"/>
    <link:presentationArc order="21" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_89832cd1-f643-4380-8e6b-7db4dc2c7971" xlink:to="loc_dei_EntityExTransitionPeriod_9facca0a-2b71-4a3a-8c3f-610163773b99" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_ea2389cb-daa4-406c-9803-0f6b66b661ae" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityCentralIndexKey"/>
    <link:presentationArc order="22" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_89832cd1-f643-4380-8e6b-7db4dc2c7971" xlink:to="loc_dei_EntityCentralIndexKey_ea2389cb-daa4-406c-9803-0f6b66b661ae" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_29397d93-0a4c-4a04-abe6-d1a76e9af739" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_CityAreaCode"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_5a8fbc30-a3b8-4fbe-a825-753560368ad0" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_LocalPhoneNumber"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_deebc354-cc03-476a-a912-f5fd92e5f1e7" xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_AmendmentFlag"/>
    <link:presentationArc order="25" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_89832cd1-f643-4380-8e6b-7db4dc2c7971" xlink:to="loc_dei_AmendmentFlag_deebc354-cc03-476a-a912-f5fd92e5f1e7" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
</link:linkbase>
