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

    <schemaVersion>X0101</schemaVersion>

    <submissionType>EFFECT</submissionType>

    <act>33</act>

    <testOrLive>LIVE</testOrLive>

    <effectiveData>
        <finalEffectivenessDispDate>2006-08-31</finalEffectivenessDispDate>
        <form>N-14AE</form>
        <filer>
            <cik>0000787623</cik>
            <entityName>TRANSAMERICA IDEX MUTUAL FUNDS</entityName>
            <fileNumber>333-136343</fileNumber>
            <seriesClassContractData>
                <merger>
                    <acquiringCik>0000787623</acquiringCik>
                    <acquiringEntityName>TRANSAMERICA IDEX MUTUAL FUNDS</acquiringEntityName>
                    <acquiringSeriesId>S000007795</acquiringSeriesId>
                    <acquiringSeriesName>TA IDEX Transamerica Equity</acquiringSeriesName>
                    <targetCik>0000787623</targetCik>
                    <targetEntityName>TRANSAMERICA IDEX MUTUAL FUNDS</targetEntityName>
                    <targetSeriesId>S000007769</targetSeriesId>
                    <targetSeriesName>TA IDEX Great Companies - America</targetSeriesName>
                    <targetClassContractId>C000021156</targetClassContractId>
                    <targetClassContractName>A</targetClassContractName>
                </merger>
                <merger>
                    <acquiringCik>0000787623</acquiringCik>
                    <acquiringEntityName>TRANSAMERICA IDEX MUTUAL FUNDS</acquiringEntityName>
                    <acquiringSeriesId>S000007795</acquiringSeriesId>
                    <acquiringSeriesName>TA IDEX Transamerica Equity</acquiringSeriesName>
                    <targetCik>0000787623</targetCik>
                    <targetEntityName>TRANSAMERICA IDEX MUTUAL FUNDS</targetEntityName>
                    <targetSeriesId>S000007769</targetSeriesId>
                    <targetSeriesName>TA IDEX Great Companies - America</targetSeriesName>
                    <targetClassContractId>C000021157</targetClassContractId>
                    <targetClassContractName>B</targetClassContractName>
                </merger>
                <merger>
                    <acquiringCik>0000787623</acquiringCik>
                    <acquiringEntityName>TRANSAMERICA IDEX MUTUAL FUNDS</acquiringEntityName>
                    <acquiringSeriesId>S000007795</acquiringSeriesId>
                    <acquiringSeriesName>TA IDEX Transamerica Equity</acquiringSeriesName>
                    <targetCik>0000787623</targetCik>
                    <targetEntityName>TRANSAMERICA IDEX MUTUAL FUNDS</targetEntityName>
                    <targetSeriesId>S000007769</targetSeriesId>
                    <targetSeriesName>TA IDEX Great Companies - America</targetSeriesName>
                    <targetClassContractId>C000021158</targetClassContractId>
                    <targetClassContractName>C</targetClassContractName>
                </merger>
                <merger>
                    <acquiringCik>0000787623</acquiringCik>
                    <acquiringEntityName>TRANSAMERICA IDEX MUTUAL FUNDS</acquiringEntityName>
                    <acquiringSeriesId>S000007795</acquiringSeriesId>
                    <acquiringSeriesName>TA IDEX Transamerica Equity</acquiringSeriesName>
                    <targetCik>0000787623</targetCik>
                    <targetEntityName>TRANSAMERICA IDEX MUTUAL FUNDS</targetEntityName>
                    <targetSeriesId>S000007769</targetSeriesId>
                    <targetSeriesName>TA IDEX Great Companies - America</targetSeriesName>
                    <targetClassContractId>C000021159</targetClassContractId>
                    <targetClassContractName>I</targetClassContractName>
                </merger>
                <merger>
                    <acquiringCik>0000787623</acquiringCik>
                    <acquiringEntityName>TRANSAMERICA IDEX MUTUAL FUNDS</acquiringEntityName>
                    <acquiringSeriesId>S000007795</acquiringSeriesId>
                    <acquiringSeriesName>TA IDEX Transamerica Equity</acquiringSeriesName>
                    <targetCik>0000787623</targetCik>
                    <targetEntityName>TRANSAMERICA IDEX MUTUAL FUNDS</targetEntityName>
                    <targetSeriesId>S000007795</targetSeriesId>
                    <targetSeriesName>TA IDEX Transamerica Equity</targetSeriesName>
                    <targetClassContractId>C000021240</targetClassContractId>
                    <targetClassContractName>A</targetClassContractName>
                </merger>
                <merger>
                    <acquiringCik>0000787623</acquiringCik>
                    <acquiringEntityName>TRANSAMERICA IDEX MUTUAL FUNDS</acquiringEntityName>
                    <acquiringSeriesId>S000007795</acquiringSeriesId>
                    <acquiringSeriesName>TA IDEX Transamerica Equity</acquiringSeriesName>
                    <targetCik>0000787623</targetCik>
                    <targetEntityName>TRANSAMERICA IDEX MUTUAL FUNDS</targetEntityName>
                    <targetSeriesId>S000007795</targetSeriesId>
                    <targetSeriesName>TA IDEX Transamerica Equity</targetSeriesName>
                    <targetClassContractId>C000021241</targetClassContractId>
                    <targetClassContractName>B</targetClassContractName>
                </merger>
                <merger>
                    <acquiringCik>0000787623</acquiringCik>
                    <acquiringEntityName>TRANSAMERICA IDEX MUTUAL FUNDS</acquiringEntityName>
                    <acquiringSeriesId>S000007795</acquiringSeriesId>
                    <acquiringSeriesName>TA IDEX Transamerica Equity</acquiringSeriesName>
                    <targetCik>0000787623</targetCik>
                    <targetEntityName>TRANSAMERICA IDEX MUTUAL FUNDS</targetEntityName>
                    <targetSeriesId>S000007795</targetSeriesId>
                    <targetSeriesName>TA IDEX Transamerica Equity</targetSeriesName>
                    <targetClassContractId>C000021242</targetClassContractId>
                    <targetClassContractName>C</targetClassContractName>
                </merger>
                <merger>
                    <acquiringCik>0000787623</acquiringCik>
                    <acquiringEntityName>TRANSAMERICA IDEX MUTUAL FUNDS</acquiringEntityName>
                    <acquiringSeriesId>S000007795</acquiringSeriesId>
                    <acquiringSeriesName>TA IDEX Transamerica Equity</acquiringSeriesName>
                    <targetCik>0000787623</targetCik>
                    <targetEntityName>TRANSAMERICA IDEX MUTUAL FUNDS</targetEntityName>
                    <targetSeriesId>S000007795</targetSeriesId>
                    <targetSeriesName>TA IDEX Transamerica Equity</targetSeriesName>
                    <targetClassContractId>C000021243</targetClassContractId>
                    <targetClassContractName>I</targetClassContractName>
                </merger>
                <merger>
                    <acquiringCik>0000787623</acquiringCik>
                    <acquiringEntityName>TRANSAMERICA IDEX MUTUAL FUNDS</acquiringEntityName>
                    <acquiringSeriesId>S000007795</acquiringSeriesId>
                    <acquiringSeriesName>TA IDEX Transamerica Equity</acquiringSeriesName>
                    <targetCik>0000787623</targetCik>
                    <targetEntityName>TRANSAMERICA IDEX MUTUAL FUNDS</targetEntityName>
                    <targetSeriesId>S000007795</targetSeriesId>
                    <targetSeriesName>TA IDEX Transamerica Equity</targetSeriesName>
                    <targetClassContractId>C000038311</targetClassContractId>
                    <targetClassContractName>T</targetClassContractName>
                </merger>
            </seriesClassContractData>
        </filer>
    </effectiveData>
</edgarSubmission>
