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

    <schemaVersion>X0206</schemaVersion>

    <documentType>3/A</documentType>

    <periodOfReport>2025-05-06</periodOfReport>

    <dateOfOriginalSubmission>2025-05-20</dateOfOriginalSubmission>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000860731</issuerCik>
        <issuerName>TYLER TECHNOLOGIES INC</issuerName>
        <issuerTradingSymbol>TYL</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0002069267</rptOwnerCik>
            <rptOwnerName>Diaz-Pedrosa Abigail Marshall</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>ONE TYLER DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>YARMOUTH</rptOwnerCity>
            <rptOwnerState>ME</rptOwnerState>
            <rptOwnerZipCode>04096</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Administrative Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>622</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                    <footnoteId id="F1"/>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">This line item is being re-reported to gain access to the filing system.  On May 20, 2025, the reporting person filed a Form 3 that inadvertently (a) reflected an incorrect Date of Event Requiring Statement in Box 5, which is 05/06/2025 (rather than the originally reported 05/16/2025), and (b) omitted the filing of a power of attorney as an exhibit. This amendment corrects the error and includes the omitted power of attorney as an exhibit.</footnote>
    </footnotes>

    <remarks>Exhibit List:

Exhibit 24-Confirming Statement</remarks>

    <ownerSignature>
        <signatureName>Randall G. Ray, attorney-in-fact</signatureName>
        <signatureDate>2025-05-23</signatureDate>
    </ownerSignature>
</ownershipDocument>
