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

    <schemaVersion>X0607</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2020-06-04</periodOfReport>

    <noSecuritiesOwned>1</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000355019</issuerCik>
        <issuerName>FONAR CORP</issuerName>
        <issuerTradingSymbol>FONR</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0002139130</rptOwnerCik>
            <rptOwnerName>Turk Richard E.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerNonUSAddressFlag>false</rptOwnerNonUSAddressFlag>
            <rptOwnerStreet1>C/O FONAR CORP</rptOwnerStreet1>
            <rptOwnerStreet2>110 MARCUS DRIVE</rptOwnerStreet2>
            <rptOwnerCity>MELVILLE</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>11747</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <remarks>No securities are beneficially owned.

This Form 3 is being filed on a delinquent basis.  The reporting person was appointed to the board of directors of the issuer on June 4, 2020, upon which this Form 3 was required to be filed within ten days pursuant to Section 16(a) of the Securities Exchange Act of 1934, as amended.   The delay in filing was inadvertent and due to administrative oversight.</remarks>

    <ownerSignature>
        <signatureName>/s/ Richard E. Turk</signatureName>
        <signatureDate>2026-06-08</signatureDate>
    </ownerSignature>
</ownershipDocument>
