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

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2018-07-26</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001683695</issuerCik>
        <issuerName>International Money Express, Inc.</issuerName>
        <issuerTradingSymbol>IMXI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001746929</rptOwnerCik>
            <rptOwnerName>Stella Point Capital LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>444 MADISON AVENUE</rptOwnerStreet1>
            <rptOwnerStreet2>25TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10022</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>1</isOther>
            <officerTitle></officerTitle>
            <otherText>Member of 10% Owner Group</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001666699</rptOwnerCik>
            <rptOwnerName>SPC Intermex, LP</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O STELLA POINT CAPITAL LLC</rptOwnerStreet1>
            <rptOwnerStreet2>444 MADISON AVE., 25TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10022</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>1</isOther>
            <officerTitle></officerTitle>
            <otherText>Member of 10% owner group</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001747018</rptOwnerCik>
            <rptOwnerName>SPC Intermex GP, LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O STELLA POINT CAPITAL LLC</rptOwnerStreet1>
            <rptOwnerStreet2>444 MADISON AVE., 25TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10022</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>1</isOther>
            <officerTitle></officerTitle>
            <otherText>Member of 10% owner group</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001748193</rptOwnerCik>
            <rptOwnerName>SPC Intermex Representative LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O STELLA POINT CAPITAL LLC</rptOwnerStreet1>
            <rptOwnerStreet2>444 MADISON AVE., 25TH FLOOR</rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10022</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>1</isOther>
            <officerTitle></officerTitle>
            <otherText>Member of 10% owner group</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>12348554</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnotes</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">These shares of common stock of the issuer are directly held by SPC Intermex, LP. The general partner of SPC Intermex, LP is SPC Intermex GP, LLC and Stella Point Capital LLC is the sole manager of SPC Intermex GP, LLC. SPC Intermex Representative LLC is the stockholder representative for certain shareholders of the subsidiaries of SPC Intermex, LP.</footnote>
        <footnote id="F2">Each of SPC Intermex GP, LLC, Stella Point Capital LLC and SPC Intermex Representative LLC may be deemed to share beneficial ownership of the shares of the issuer's common stock held of record by SPC Intermex, LP, but each disclaims beneficial ownership of such shares, except to the extent of its respective pecuniary interest therein. Adam Godfrey and Justin Wender are the managing partners of and jointly control Stella Point Capital LLC, and each may also be deemed to have beneficial ownership of the shares of the issuer's common stock held of record by SPC Intermex, LP, but each disclaims beneficial ownership of such shares, except to the extent of their respective pecuniary interest therein.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Stella Point Capital LLC, by /s/ Adam Godfrey, Managing Partner</signatureName>
        <signatureDate>2018-07-30</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>SPC Intermex, LP, by SPC Intermex GP, LLC, its general partner, by Stella Point Capital LLC, its sole manager, by /s/ Adam Godfrey, Managing Partner</signatureName>
        <signatureDate>2018-07-30</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>SPC Intermex GP, LLC, by Stella Point Capital LLC, its sole manager, by /s/ Adam Godfrey, Managing Partner</signatureName>
        <signatureDate>2018-07-30</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>SPC Intermex Representative LLC, by /s/ Adam Godfrey, Managing Partner</signatureName>
        <signatureDate>2018-07-30</signatureDate>
    </ownerSignature>
</ownershipDocument>
