-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 UHjubDgn3xwNd5FWPC6NobgrPUGgJotW97TLLa0UZFJiZhCYnDRq/c6a5monQ3vV
 O9FI6J0il0dmasYHms+HRg==

<SEC-DOCUMENT>0001179110-06-017777.txt : 20060901
<SEC-HEADER>0001179110-06-017777.hdr.sgml : 20060901
<ACCEPTANCE-DATETIME>20060901110116
ACCESSION NUMBER:		0001179110-06-017777
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20060825
FILED AS OF DATE:		20060901
DATE AS OF CHANGE:		20060901

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CHASE CORP
		CENTRAL INDEX KEY:			0000830524
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC LIGHTING & WIRING EQUIPMENT [3640]
		IRS NUMBER:				111797126
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			0831

	BUSINESS ADDRESS:	
		STREET 1:		26 SUMMER STREET
		STREET 2:		STE 220
		CITY:			BRIDGEWATER
		STATE:			MA
		ZIP:			02324
		BUSINESS PHONE:		5082791789

	MAIL ADDRESS:	
		STREET 1:		26 SUMMER ST
		CITY:			BRIDGEWATER
		STATE:			MA
		ZIP:			02324

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			FENNO J BROOKS
		CENTRAL INDEX KEY:			0001374244

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-09852
		FILM NUMBER:		061070331

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		617-536-0197

	MAIL ADDRESS:	
		STREET 1:		286 BEACON STREET
		STREET 2:		UNIT 12
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>FORM 3 -
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2006-08-25</periodOfReport>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000830524</issuerCik>
        <issuerName>CHASE CORP</issuerName>
        <issuerTradingSymbol>CCF</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001374244</rptOwnerCik>
            <rptOwnerName>FENNO J BROOKS</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>386 BEACON STREET</rptOwnerStreet1>
            <rptOwnerStreet2>UNIT 12</rptOwnerStreet2>
            <rptOwnerCity>BOSTON</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>02116</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Chase Corporation Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>100</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable></derivativeTable>

    <footnotes></footnotes>

    <ownerSignature>
        <signatureName>Paula Myers by power of attorney</signatureName>
        <signatureDate>2006-08-31</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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