<SEC-DOCUMENT>0000895728-19-000101.txt : 20190510
<SEC-HEADER>0000895728-19-000101.hdr.sgml : 20190510
<ACCEPTANCE-DATETIME>20190510132504
ACCESSION NUMBER:		0000895728-19-000101
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20190508
FILED AS OF DATE:		20190510
DATE AS OF CHANGE:		20190510

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Yardley William T.
		CENTRAL INDEX KEY:			0001494476

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-15254
		FILM NUMBER:		19813968

	MAIL ADDRESS:	
		STREET 1:		5400 WESTHEIMER COURT
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77056

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ENBRIDGE INC
		CENTRAL INDEX KEY:			0000895728
		STANDARD INDUSTRIAL CLASSIFICATION:	PIPE LINES (NO NATURAL GAS) [4610]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			A0
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		200 425 - 1ST STREET SW
		CITY:			CALGARY
		STATE:			A0
		ZIP:			T2P 3L8
		BUSINESS PHONE:		403-231-3900

	MAIL ADDRESS:	
		STREET 1:		200 425 - 1ST STREET SW
		CITY:			CALGARY
		STATE:			A0
		ZIP:			T2P 3L8

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	IPL ENERGY INC
		DATE OF NAME CHANGE:	19940616

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	INTERPROVINCIAL PIPE LINE SYSTEM INC
		DATE OF NAME CHANGE:	19930108
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_155750908477180.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2019-05-08</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000895728</issuerCik>
        <issuerName>ENBRIDGE INC</issuerName>
        <issuerTradingSymbol>ENB</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001494476</rptOwnerCik>
            <rptOwnerName>Yardley William T.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O ENBRIDGE INC.</rptOwnerStreet1>
            <rptOwnerStreet2>200, 425 1ST STREET SW</rptOwnerStreet2>
            <rptOwnerCity>CALGARY</rptOwnerCity>
            <rptOwnerState>A0</rptOwnerState>
            <rptOwnerZipCode>T2P 3L8</rptOwnerZipCode>
            <rptOwnerStateDescription>ALBERTA, CANADA</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>See Remarks</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable></nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Restricted Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F1"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2019-05-08</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>40420</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F1"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Shares</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>40420.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>40420</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">Each unit represents a contingent right to receive one Enbridge Common Share. The units were granted on May 8, 2019 and will vest as to 20% of the award on each of the first and second anniversaries of grant, with the remainder of such award vesting on the third anniversary grant, on the condition that the officer remain employed at Enbridge throughout that time.</footnote>
    </footnotes>

    <remarks>Executive Vice President &amp; President, Gas Transmission &amp; Midstream</remarks>

    <ownerSignature>
        <signatureName>/s/ Michelle Lowther, attorney-in-fact</signatureName>
        <signatureDate>2019-05-10</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
