<SEC-DOCUMENT>0001214659-17-007082.txt : 20171201
<SEC-HEADER>0001214659-17-007082.hdr.sgml : 20171201
<ACCEPTANCE-DATETIME>20171201170011
ACCESSION NUMBER:		0001214659-17-007082
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20171129
FILED AS OF DATE:		20171201
DATE AS OF CHANGE:		20171201

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			WELTON MARK
		CENTRAL INDEX KEY:			0001255910

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35066
		FILM NUMBER:		171234757

	MAIL ADDRESS:	
		STREET 1:		2525 SPEAKMAN DRIVE
		STREET 2:		C/O IMAX CORP
		CITY:			MISSISSAUGA
		STATE:			A6
		ZIP:			L5K 1B1

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			IMAX CORP
		CENTRAL INDEX KEY:			0000921582
		STANDARD INDUSTRIAL CLASSIFICATION:	PHOTOGRAPHIC EQUIPMENT & SUPPLIES [3861]
		IRS NUMBER:				980140269
		STATE OF INCORPORATION:			A6
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		2525 SPEAKMAN DRIVE
		STREET 2:		MISSISSAUGA
		CITY:			ONTARIO CANADA
		STATE:			A6
		ZIP:			L5K 1B1
		BUSINESS PHONE:		9054036500

	MAIL ADDRESS:	
		STREET 1:		2525 SPEAKMAN DRIVE
		STREET 2:		MISSISSAUGA
		CITY:			ONTARIO CANADA
		STATE:			A6
		ZIP:			L5K 1B1
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>marketforms-40359.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2017-11-29</periodOfReport>

    <issuer>
        <issuerCik>0000921582</issuerCik>
        <issuerName>IMAX CORP</issuerName>
        <issuerTradingSymbol>IMAX</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001255910</rptOwnerCik>
            <rptOwnerName>WELTON MARK</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>2525 SPEAKMAN DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2>C/O IMAX CORPORATION</rptOwnerStreet2>
            <rptOwnerCity>MISSISSAUGA</rptOwnerCity>
            <rptOwnerState>A6</rptOwnerState>
            <rptOwnerZipCode>L5K 1B1</rptOwnerZipCode>
            <rptOwnerStateDescription>ONTARIO, CANADA</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>false</isDirector>
            <isOfficer>true</isOfficer>
            <isTenPercentOwner>false</isTenPercentOwner>
            <isOther>false</isOther>
            <officerTitle>President, IMAX Theatres</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>common shares (opening balance)</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>16331</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>common shares</value>
            </securityTitle>
            <transactionDate>
                <value>2017-11-29</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>false</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>8985</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>25.8148</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>7346</value>
                    <footnoteId id="F1"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes>
        <footnote id="F1">Mr. Welton's aggregate remaining common share, option and RSU balances following today's transaction will be 7,346; 186,422 	and 36,557 respectively.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Mark Welton</signatureName>
        <signatureDate>2017-11-30</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
