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

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2011-04-28</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001275791</issuerCik>
        <issuerName>MediaMind Technologies Inc.</issuerName>
        <issuerTradingSymbol>MDMD</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001436986</rptOwnerCik>
            <rptOwnerName>Sycamore Technologies Ventures L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O BRM GROUP LTD.</rptOwnerStreet1>
            <rptOwnerStreet2>BEIT BAREKET HGOLAN ST</rptOwnerStreet2>
            <rptOwnerCity>AIRPORT CITY P.O. BOX 215</rptOwnerCity>
            <rptOwnerState>L3</rptOwnerState>
            <rptOwnerZipCode>70100</rptOwnerZipCode>
            <rptOwnerStateDescription>ISRAEL</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2011-04-28</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>953129</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>2620391</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Sycamore Technologies Ventures L.P. distributed 953,129 shares of common stock of the issuer to its limited partner, Anfield Ltd., for no consideration, in accordance with the terms of the limited partnership agreement of Sycamore Technologies Ventures L.P.</footnote>
        <footnote id="F2">Mr. Eli Barkat is the sole member of the board of directors of Sycamore Technologies Venture Ltd., the general partner of Sycamore Technologies Ventures, L.P. Because Mr. Barkat is the sole member of the board of directors of Sycamore Technologies Venture Ltd., he has voting and dispositive power over these shares. Mr. Barkat disclaims beneficial ownership of the shares except to the extent of his pecuniary interests in Sycamore Technologies Ventures, L.P</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Sycamore Technologies Ventures Ltd., general partner of Sycamore Technologies Ventures, L.P.</signatureName>
        <signatureDate>2011-05-08</signatureDate>
    </ownerSignature>
</ownershipDocument>
