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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:01a0a5da-c3b3-73c5-8712-b4adc71a5e63,g:6e03ae33-f323-4c22-afcd-fde7eeb188fc-->
<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://prospectcap.com/role/Cover" xlink:type="simple" xlink:href="psec-20260917.xsd#Cover"/>
  <link:presentationLink xlink:role="http://prospectcap.com/role/Cover" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_CoverAbstract_01a0a5da-c3b3-7a65-bddc-90c8828adfaf" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_CoverAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_01a0a5da-c3b3-7fb7-a290-24691d694a17" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityRegistrantName"/>
    <link:presentationArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a0a5da-c3b3-7a65-bddc-90c8828adfaf" xlink:to="loc_dei_EntityRegistrantName_01a0a5da-c3b3-7fb7-a290-24691d694a17" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_01a0a5da-c3b3-7a6c-8c67-da77b1e63501" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressAddressLine1"/>
    <link:presentationArc order="2" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a0a5da-c3b3-7a65-bddc-90c8828adfaf" xlink:to="loc_dei_EntityAddressAddressLine1_01a0a5da-c3b3-7a6c-8c67-da77b1e63501" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_01a0a5da-c3b3-7766-8d48-dc38d4b6ade4" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressCityOrTown"/>
    <link:presentationArc order="3" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a0a5da-c3b3-7a65-bddc-90c8828adfaf" xlink:to="loc_dei_EntityAddressCityOrTown_01a0a5da-c3b3-7766-8d48-dc38d4b6ade4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine2_01a0a5da-c3b3-7c30-88f7-c3c0f9e29fc4" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressAddressLine2"/>
    <link:presentationArc order="4" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a0a5da-c3b3-7a65-bddc-90c8828adfaf" xlink:to="loc_dei_EntityAddressAddressLine2_01a0a5da-c3b3-7c30-88f7-c3c0f9e29fc4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_01a0a5da-c3b3-740c-bff7-5d171e4a96f3" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressStateOrProvince"/>
    <link:presentationArc order="5" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a0a5da-c3b3-7a65-bddc-90c8828adfaf" xlink:to="loc_dei_EntityAddressStateOrProvince_01a0a5da-c3b3-740c-bff7-5d171e4a96f3" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_01a0a5da-c3b3-7065-b2cc-41bc110193d5" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityAddressPostalZipCode"/>
    <link:presentationArc order="6" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a0a5da-c3b3-7a65-bddc-90c8828adfaf" xlink:to="loc_dei_EntityAddressPostalZipCode_01a0a5da-c3b3-7065-b2cc-41bc110193d5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_01a0a5da-c3b3-7f75-aade-f9a4c51c1a20" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityCentralIndexKey"/>
    <link:presentationArc order="7" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a0a5da-c3b3-7a65-bddc-90c8828adfaf" xlink:to="loc_dei_EntityCentralIndexKey_01a0a5da-c3b3-7f75-aade-f9a4c51c1a20" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_01a0a5da-c3b3-7395-944a-3d38ca2a548c" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_AmendmentFlag"/>
    <link:presentationArc order="8" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a0a5da-c3b3-7a65-bddc-90c8828adfaf" xlink:to="loc_dei_AmendmentFlag_01a0a5da-c3b3-7395-944a-3d38ca2a548c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_01a0a5da-c3b3-7eef-a0f7-02d5f008f1f1" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_DocumentType"/>
    <link:presentationArc order="9" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a0a5da-c3b3-7a65-bddc-90c8828adfaf" xlink:to="loc_dei_DocumentType_01a0a5da-c3b3-7eef-a0f7-02d5f008f1f1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_01a0a5da-c3b3-75b8-883a-6fa510d89fca" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_CityAreaCode"/>
    <link:presentationArc order="10" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a0a5da-c3b3-7a65-bddc-90c8828adfaf" xlink:to="loc_dei_CityAreaCode_01a0a5da-c3b3-75b8-883a-6fa510d89fca" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_01a0a5da-c3b3-7982-80e8-031c1269c391" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_LocalPhoneNumber"/>
    <link:presentationArc order="11" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a0a5da-c3b3-7a65-bddc-90c8828adfaf" xlink:to="loc_dei_LocalPhoneNumber_01a0a5da-c3b3-7982-80e8-031c1269c391" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_ContactPersonnelName_01a0a5da-c3b3-7e46-8acf-b6d50d9396fc" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_ContactPersonnelName"/>
    <link:presentationArc order="12" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a0a5da-c3b3-7a65-bddc-90c8828adfaf" xlink:to="loc_dei_ContactPersonnelName_01a0a5da-c3b3-7e46-8acf-b6d50d9396fc" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_NoSubstantiveChanges462c_01a0a5da-c3b3-79fc-b632-974a0da58344" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_NoSubstantiveChanges462c"/>
    <link:presentationArc order="13" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a0a5da-c3b3-7a65-bddc-90c8828adfaf" xlink:to="loc_dei_NoSubstantiveChanges462c_01a0a5da-c3b3-79fc-b632-974a0da58344" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_ExhibitsOnly462d_01a0a5da-c3b3-7163-8856-36025e6fe504" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_ExhibitsOnly462d"/>
    <link:presentationArc order="14" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a0a5da-c3b3-7a65-bddc-90c8828adfaf" xlink:to="loc_dei_ExhibitsOnly462d_01a0a5da-c3b3-7163-8856-36025e6fe504" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_01a0a5da-c3b3-763b-a0f0-09a32e643efd" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityEmergingGrowthCompany"/>
    <link:presentationArc order="15" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a0a5da-c3b3-7a65-bddc-90c8828adfaf" xlink:to="loc_dei_EntityEmergingGrowthCompany_01a0a5da-c3b3-763b-a0f0-09a32e643efd" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityWellKnownSeasonedIssuer_01a0a5da-c3b3-7137-b038-0ee46abe783c" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityWellKnownSeasonedIssuer"/>
    <link:presentationArc order="16" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_dei_CoverAbstract_01a0a5da-c3b3-7a65-bddc-90c8828adfaf" xlink:to="loc_dei_EntityWellKnownSeasonedIssuer_01a0a5da-c3b3-7137-b038-0ee46abe783c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
</link:linkbase>
