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

    <schemaVersion>X0101</schemaVersion>

    <submissionType>EFFECT</submissionType>

    <act>33</act>

    <testOrLive>LIVE</testOrLive>

    <effectiveData>
        <finalEffectivenessDispDate>2015-10-28</finalEffectivenessDispDate>
        <finalEffectivenessDispTime>12:00:00</finalEffectivenessDispTime>
        <form>N-14</form>
        <filer>
            <cik>0000097098</cik>
            <entityName>BLACKROCK LIQUIDITY FUNDS</entityName>
            <fileNumber>333-206288</fileNumber>
            <seriesClassContractData>
                <merger>
                    <acquiringCik>0000097098</acquiringCik>
                    <acquiringEntityName>BLACKROCK LIQUIDITY FUNDS</acquiringEntityName>
                    <acquiringSeriesId>S000001480</acquiringSeriesId>
                    <acquiringSeriesName>BLACKROCK LIQUIDITY MUNICASH</acquiringSeriesName>
                    <acquiringClassContractId>C000003974</acquiringClassContractId>
                    <acquiringClassContractName>INSTITUTIONAL</acquiringClassContractName>
                    <targetCik>0000814079</targetCik>
                    <targetEntityName>Funds for Institutions Series</targetEntityName>
                    <targetSeriesId>S000003011</targetSeriesId>
                    <targetSeriesName>FFI Institutional Tax-Exempt Fund</targetSeriesName>
                    <targetClassContractId>C000008268</targetClassContractId>
                    <targetClassContractName>FFI Institutional Tax-Exempt Fund</targetClassContractName>
                </merger>
            </seriesClassContractData>
        </filer>
    </effectiveData>
</edgarSubmission>
