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

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2026-03-16</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0001061736</issuerCik>
        <issuerName>MEXICAN ECONOMIC DEVELOPMENT INC</issuerName>
        <issuerTradingSymbol>FMX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001098825</rptOwnerCik>
            <rptOwnerName>LARSON MICHAEL</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>AVENIDA GENERAL AYALA 601</rptOwnerStreet1>
            <rptOwnerStreet2>BELLA VISTA</rptOwnerStreet2>
            <rptOwnerCity>MONTERREY</rptOwnerCity>
            <rptOwnerState>O5</rptOwnerState>
            <rptOwnerZipCode>64410</rptOwnerZipCode>
            <rptOwnerStateDescription>MEXICO</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>BD Units</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>65000</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">The securities reported herein are held in the form of American Depositary Shares, evidenced by American Depositary Receipts (ADRs). Each ADR represents 10 BD Units. Each BD Unit consists of one Series B Share, two Series D-B Shares and two Series D-L Shares (BD Unit), without par value (&quot;Series D-B Shares&quot; and &quot;Series D-L Shares&quot;, respectively).</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Sergio Rodriguez Perez, Attorney in Fact</signatureName>
        <signatureDate>2026-03-16</signatureDate>
    </ownerSignature>
</ownershipDocument>