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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 r2FAzvsdnlGu3Wm+NDBc7A==

<SEC-DOCUMENT>0001144204-09-049025.txt : 20090918
<SEC-HEADER>0001144204-09-049025.hdr.sgml : 20090918
<ACCEPTANCE-DATETIME>20090918154415
ACCESSION NUMBER:		0001144204-09-049025
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20090916
FILED AS OF DATE:		20090918
DATE AS OF CHANGE:		20090918

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MERRIMAC INDUSTRIES INC
		CENTRAL INDEX KEY:			0000706864
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRONIC COMPONENTS, NEC [3679]
		IRS NUMBER:				221642321
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1230

	BUSINESS ADDRESS:	
		STREET 1:		41 FAIRFIELD PL
		CITY:			W CALDWELL
		STATE:			NJ
		ZIP:			07006-0986
		BUSINESS PHONE:		9735751300

	MAIL ADDRESS:	
		STREET 1:		41 FAIRFIELD PLACE
		CITY:			WEST CALDWELL
		STATE:			NJ
		ZIP:			07007-0986

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			HAHN JAYSON
		CENTRAL INDEX KEY:			0001193163

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-09970
		FILM NUMBER:		091076846

	MAIL ADDRESS:	
		STREET 1:		41 FIARFIFELD PLACE
		CITY:			WEST CALDWELL
		STATE:			NJ
		ZIP:			07006
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>v160779_ex.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2009-09-16</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000706864</issuerCik>
        <issuerName>MERRIMAC INDUSTRIES INC</issuerName>
        <issuerTradingSymbol>MRM</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001193163</rptOwnerCik>
            <rptOwnerName>HAHN JAYSON</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>348 ST. CLOUD AVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>WEST ORANGE</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>07052</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>VP &amp; Chief Information Officer</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Options</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>7.83</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2009-09-16</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>7500</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2019-09-15</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>7500</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>7500</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">These options were granted under the Issuer's 2006 Stock Option Plan and become exercisable as follows: one-third of such
 options are exercisable on September 16, 2010, an additional one-third are exercisable on September 16, 2011, and an
 additional one-third are exercisable on September 16, 2012.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/  Jayson E. Hahn</signatureName>
        <signatureDate>2009-09-18</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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