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

    <schemaVersion>X0607</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2026-09-19</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0002029039</issuerCik>
        <issuerName>Nasus Pharma Ltd</issuerName>
        <issuerTradingSymbol>NSRX</issuerTradingSymbol>
        <issuerForeignTradingSymbol></issuerForeignTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001713701</rptOwnerCik>
            <rptOwnerName>Elmaliah Oren</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerNonUSAddressFlag>true</rptOwnerNonUSAddressFlag>
            <rptOwnerStreet1>P.O. BOX 284</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>TEL-AVIV-YAFO</rptOwnerCity>
            <rptOwnerNonUSStateTerritory></rptOwnerNonUSStateTerritory>
            <rptOwnerCountry>L3</rptOwnerCountry>
            <rptOwnerZipCode>6100201</rptOwnerZipCode>
            <rptOwnerStateDescription>ISRAEL</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Interim CFO</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Share options (right to buy)</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>1.2264</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2020-06-13</value>
            </exerciseDate>
            <expirationDate>
                <value>2029-11-28</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Ordinary Shares</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>24680</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
        <derivativeHolding>
            <securityTitle>
                <value>Share options (right to buy)</value>
                <footnoteId id="F2"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>6.0462</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2025-01-17</value>
            </exerciseDate>
            <expirationDate>
                <value>2035-01-17</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Ordinary Shares</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>27460</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Options to purchase 24,680 ordinary shares of the Issuer, no par value (&quot;Ordinary Shares&quot;) were granted on November 28, 2019. As of September 18, 2026, 24,680 options remain outstanding, all of which are vested and exercisable, at an exercise price of $1.2264 per share, expiring November 28, 2029.</footnote>
        <footnote id="F2">Options to purchase 27,460 Ordinary Shares were granted on January 17, 2025, with the total grant vesting in equal quarterly installments of 8.33% commencing on January 17, 2025. As of September 18, 2026, 13,840 are vested and exercisable, at an exercise price of $6.0462 per share, expiring January 17, 2035.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Oren Elmaliah</signatureName>
        <signatureDate>2026-09-23</signatureDate>
    </ownerSignature>
</ownershipDocument>
