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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2018-09-14</periodOfReport>

    <notSubjectToSection16>1</notSubjectToSection16>

    <issuer>
        <issuerCik>0001575828</issuerCik>
        <issuerName>FRANK'S INTERNATIONAL N.V.</issuerName>
        <issuerTradingSymbol>FI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001723230</rptOwnerCik>
            <rptOwnerName>Mosing Bryn Patrick</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>10260 WESTHEIMER ROAD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>HOUSTON</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>77042</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value Euro 0.01 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2018-09-14</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>12361</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>8.5114</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">On September 14, 2018, the Reporting Person sold 12,361 shares of Frank's International N.V.'s common stock, par value Euro 0.01 per share (the &quot;Common Stock&quot;) on the New York Stock Exchange in open market sales, at prices ranging from $8.5000 to $8.5800 per share, with a weighted-average per-share price of $8.5114.</footnote>
        <footnote id="F2">The Reporting Person agrees to provide, upon request by the Securities Exchange Commission, the Issuer, or a holder of Common Stock, full information regarding the number of shares of Common Stock sold at each separate price.</footnote>
    </footnotes>

    <remarks>The Reporting Person is a reporting person solely as a result of being a party to that certain Voting Agreement, dated July 22, 2013, by and among Ginsoma Family C.V., FWW B.V., Mosing Holdings, LLC and the other parties thereto.</remarks>

    <ownerSignature>
        <signatureName>/s/ Bryn P. Mosing</signatureName>
        <signatureDate>2018-09-14</signatureDate>
    </ownerSignature>
</ownershipDocument>
