<?xml version="1.0"?>
<edgarSubmission>

    <schemaVersion>X0101</schemaVersion>

    <submissionType>EFFECT</submissionType>

    <act>33</act>

    <testOrLive>LIVE</testOrLive>

    <effectiveData>
        <finalEffectivenessDispDate>2025-12-23</finalEffectivenessDispDate>
        <finalEffectivenessDispTime>12:30:00</finalEffectivenessDispTime>
        <form>N-14 8C</form>
        <filer>
            <cik>0001338561</cik>
            <entityName>Nuveen S&amp;P 500 Dynamic Overwrite Fund</entityName>
            <fileNumber>333-290975</fileNumber>
        </filer>
    </effectiveData>
</edgarSubmission>
