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

    <schemaVersion>X0607</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2026-06-30</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0002139246</issuerCik>
        <issuerName>Viking Acquisition Corp. II</issuerName>
        <issuerTradingSymbol>VII</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0002139176</rptOwnerCik>
            <rptOwnerName>Viking Acquisition Sponsor II, LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerNonUSAddressFlag>false</rptOwnerNonUSAddressFlag>
            <rptOwnerStreet1>C/O VIKING ACQUISITION CORP II</rptOwnerStreet1>
            <rptOwnerStreet2>900 THIRD AVENUE 18TH 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>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeHolding>
            <securityTitle>
                <value>Class B ordinary shares</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A ordinary shares</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>7666667</value>
                    <footnoteId id="F2"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The Class B ordinary shares are convertible for the Issuer's Class A ordinary shares as described under the heading &quot;Description of Securities&quot; in the Issuer's Registration Statement on Form S-1 (File No. 333-296719) and have no expiration date.</footnote>
        <footnote id="F2">The Class B ordinary shares underlying the private placement units are held directly by the reporting person (the &quot;Sponsor&quot;). The shares held by the Sponsor are beneficially owned by KingsRock Viking Acquisition II, LLC, which is an affiliate of and managed by KingsRock Advisors, LLC. Mr. Wohlin is the Chief Executive Officer of the Sponsor (as well as KingsRock Viking Acquisition II, LLC and KingsRock Advisors, LLC), and has the voting and dispositive power over the shares held by the Sponsor. 1,000,000 shares are subject to forfeiture to the extent the underwriters do not exercise their over-allotment option.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>Hakan Nils Wohlin, as Chief Executive Officer of Viking Acquisition Sponsor II, LLC</signatureName>
        <signatureDate>2026-06-30</signatureDate>
    </ownerSignature>
</ownershipDocument>
