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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019fd315-2a5d-7117-8b1a-a2209fb2894d,g:14d976d9-aaad-4728-ad07-7de980dd8d75-->
<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-20260806.xsd#Cover"/>
  <link:presentationLink xlink:role="http://prospectcap.com/role/Cover" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_dei_CoverAbstract_019fd315-2a5d-7f76-a911-f3dcb640a79f" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_CoverAbstract"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityRegistrantName_019fd315-2a5d-710d-9d21-bd5aaca90227" 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_019fd315-2a5d-7f76-a911-f3dcb640a79f" xlink:to="loc_dei_EntityRegistrantName_019fd315-2a5d-710d-9d21-bd5aaca90227" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine1_019fd315-2a5d-7ada-b5a7-ff2cdec6ec16" 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_019fd315-2a5d-7f76-a911-f3dcb640a79f" xlink:to="loc_dei_EntityAddressAddressLine1_019fd315-2a5d-7ada-b5a7-ff2cdec6ec16" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressCityOrTown_019fd315-2a5d-78a5-ad9b-6d55c3856125" 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_019fd315-2a5d-7f76-a911-f3dcb640a79f" xlink:to="loc_dei_EntityAddressCityOrTown_019fd315-2a5d-78a5-ad9b-6d55c3856125" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressAddressLine2_019fd315-2a5d-75e7-b7a2-cc359b2a51c9" 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_019fd315-2a5d-7f76-a911-f3dcb640a79f" xlink:to="loc_dei_EntityAddressAddressLine2_019fd315-2a5d-75e7-b7a2-cc359b2a51c9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressStateOrProvince_019fd315-2a5d-7942-9617-6f022f81c5e4" 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_019fd315-2a5d-7f76-a911-f3dcb640a79f" xlink:to="loc_dei_EntityAddressStateOrProvince_019fd315-2a5d-7942-9617-6f022f81c5e4" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityAddressPostalZipCode_019fd315-2a5d-7dc7-82b6-2f494f56b4da" 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_019fd315-2a5d-7f76-a911-f3dcb640a79f" xlink:to="loc_dei_EntityAddressPostalZipCode_019fd315-2a5d-7dc7-82b6-2f494f56b4da" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityCentralIndexKey_019fd315-2a5d-7c6c-ba7f-3a8592c880df" 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_019fd315-2a5d-7f76-a911-f3dcb640a79f" xlink:to="loc_dei_EntityCentralIndexKey_019fd315-2a5d-7c6c-ba7f-3a8592c880df" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_AmendmentFlag_019fd315-2a5d-701b-ac9a-2b0e30c35e70" 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_019fd315-2a5d-7f76-a911-f3dcb640a79f" xlink:to="loc_dei_AmendmentFlag_019fd315-2a5d-701b-ac9a-2b0e30c35e70" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_DocumentType_019fd315-2a5d-7480-bd9d-d7c74157250b" 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_019fd315-2a5d-7f76-a911-f3dcb640a79f" xlink:to="loc_dei_DocumentType_019fd315-2a5d-7480-bd9d-d7c74157250b" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_CityAreaCode_019fd315-2a5d-7634-8553-5ec0798fb3e1" 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_019fd315-2a5d-7f76-a911-f3dcb640a79f" xlink:to="loc_dei_CityAreaCode_019fd315-2a5d-7634-8553-5ec0798fb3e1" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_LocalPhoneNumber_019fd315-2a5d-7b1f-b41a-e774ba740184" 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_019fd315-2a5d-7f76-a911-f3dcb640a79f" xlink:to="loc_dei_LocalPhoneNumber_019fd315-2a5d-7b1f-b41a-e774ba740184" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_ContactPersonnelName_019fd315-2a5d-7aa3-861c-61eeaa0c00e5" 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_019fd315-2a5d-7f76-a911-f3dcb640a79f" xlink:to="loc_dei_ContactPersonnelName_019fd315-2a5d-7aa3-861c-61eeaa0c00e5" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_NoSubstantiveChanges462c_019fd315-2a5d-702b-87e6-21ef8a602987" 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_019fd315-2a5d-7f76-a911-f3dcb640a79f" xlink:to="loc_dei_NoSubstantiveChanges462c_019fd315-2a5d-702b-87e6-21ef8a602987" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_ExhibitsOnly462d_019fd315-2a5d-7325-a501-2edef58a6c2c" 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_019fd315-2a5d-7f76-a911-f3dcb640a79f" xlink:to="loc_dei_ExhibitsOnly462d_019fd315-2a5d-7325-a501-2edef58a6c2c" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityEmergingGrowthCompany_019fd315-2a5d-7ab8-b518-4ed2a88507c9" 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_019fd315-2a5d-7f76-a911-f3dcb640a79f" xlink:to="loc_dei_EntityEmergingGrowthCompany_019fd315-2a5d-7ab8-b518-4ed2a88507c9" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
    <link:loc xlink:type="locator" xlink:label="loc_dei_EntityWellKnownSeasonedIssuer_019fd315-2a5d-7c10-8b70-3e06708815fc" 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_019fd315-2a5d-7f76-a911-f3dcb640a79f" xlink:to="loc_dei_EntityWellKnownSeasonedIssuer_019fd315-2a5d-7c10-8b70-3e06708815fc" xlink:type="arc" preferredLabel="http://www.xbrl.org/2003/role/terseLabel"/>
  </link:presentationLink>
</link:linkbase>
