<SEC-DOCUMENT>0001645113-23-000011.txt : 20230110
<SEC-HEADER>0001645113-23-000011.hdr.sgml : 20230110
<ACCEPTANCE-DATETIME>20230110161350
ACCESSION NUMBER:		0001645113-23-000011
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20230106
FILED AS OF DATE:		20230110
DATE AS OF CHANGE:		20230110

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Burke William Patrick
		CENTRAL INDEX KEY:			0001880493

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-37565
		FILM NUMBER:		23521289

	MAIL ADDRESS:	
		STREET 1:		195 COMMERCE WAY
		CITY:			PORTSMOUTH
		STATE:			NH
		ZIP:			03801

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NovoCure Ltd
		CENTRAL INDEX KEY:			0001645113
		STANDARD INDUSTRIAL CLASSIFICATION:	SURGICAL & MEDICAL INSTRUMENTS & APPARATUS [3841]
		IRS NUMBER:				000000000
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		NO. 4 THE FORUM
		STREET 2:		GRENVILLE STREET
		CITY:			ST. HELIER
		STATE:			Y9
		ZIP:			JE2 4UF
		BUSINESS PHONE:		44 (0)15 3475 6700

	MAIL ADDRESS:	
		STREET 1:		NO. 4 THE FORUM
		STREET 2:		GRENVILLE STREET
		CITY:			ST. HELIER
		STATE:			Y9
		ZIP:			JE2 4UF

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Novocure Ltd
		DATE OF NAME CHANGE:	20150615
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_167338521511152.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2023-01-06</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001645113</issuerCik>
        <issuerName>NovoCure Ltd</issuerName>
        <issuerTradingSymbol>NVCR</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001880493</rptOwnerCik>
            <rptOwnerName>Burke William Patrick</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1550 LIBERTY RIDGE DRIVE, SUITE 115</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 300</rptOwnerStreet2>
            <rptOwnerCity>WAYNE</rptOwnerCity>
            <rptOwnerState>PA</rptOwnerState>
            <rptOwnerZipCode>19087</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Human Resources Officer</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Ordinary Shares</value>
                <footnoteId id="F1"/>
            </securityTitle>
            <transactionDate>
                <value>2023-01-06</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>5</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value>E</value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>108</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>62.305</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>55594</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">The reporting person is voluntarily reporting the acquisition of shares of the issuer's ordinary shares pursuant to the NovoCure Limited Employee Share Purchase Plan (&quot;ESPP&quot;), for the ESPP purchase period of July 1, 2022 through December 30, 2022.  This transaction is also exempt under Rule 16b-3(c).</footnote>
        <footnote id="F2">In accordance with the ESPP, these shares were purchased based on 85% of the closing price of the issuer's ordinary shares on July 1, 2022.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>By: /s/ Steven Robbins, Attorney in Fact for William Patrick Burke</signatureName>
        <signatureDate>2023-01-10</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
