<SEC-DOCUMENT>0001179110-18-012214.txt : 20181017
<SEC-HEADER>0001179110-18-012214.hdr.sgml : 20181017
<ACCEPTANCE-DATETIME>20181017151650
ACCESSION NUMBER:		0001179110-18-012214
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20181008
FILED AS OF DATE:		20181017
DATE AS OF CHANGE:		20181017

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Speights Robert
		CENTRAL INDEX KEY:			0001756200

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34223
		FILM NUMBER:		181126343

	MAIL ADDRESS:	
		STREET 1:		C/O CLEAN HARBORS ENVIRONMENTAL SERVICES
		STREET 2:		42 LONGWATER DRIVE
		CITY:			NORWELL
		STATE:			MA
		ZIP:			02061

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CLEAN HARBORS INC
		CENTRAL INDEX KEY:			0000822818
		STANDARD INDUSTRIAL CLASSIFICATION:	HAZARDOUS WASTE MANAGEMENT [4955]
		IRS NUMBER:				042997780
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		42 LONGWATER DRIVE
		STREET 2:		P.O. BOX 9149
		CITY:			NORWELL
		STATE:			MA
		ZIP:			02061-9149
		BUSINESS PHONE:		781-792-5000

	MAIL ADDRESS:	
		STREET 1:		42 LONGWATER DRIVE
		CITY:			NORWELL
		STATE:			MA
		ZIP:			02061-9149
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>FORM 3 -
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2018-10-08</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000822818</issuerCik>
        <issuerName>CLEAN HARBORS INC</issuerName>
        <issuerTradingSymbol>CLH</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001756200</rptOwnerCik>
            <rptOwnerName>Speights Robert</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>42 LONGWATER DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NORWELL</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02061</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>EVP (CHESI)</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes></footnotes>

    <ownerSignature>
        <signatureName>Robert Speights</signatureName>
        <signatureDate>2018-10-17</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
