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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,
 HI7f57dtYelRFzNMFUD9xAQSqJRwe01lQcCwmJOfevbInlOGPoMtAYBZOhDntqRv
 3496se566T/7bAKkErqjNQ==

<SEC-DOCUMENT>0000355199-06-000024.txt : 20061010
<SEC-HEADER>0000355199-06-000024.hdr.sgml : 20061009
<ACCEPTANCE-DATETIME>20061010144849
ACCESSION NUMBER:		0000355199-06-000024
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20061001
FILED AS OF DATE:		20061010
DATE AS OF CHANGE:		20061010

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			YORSZ JEFFREY
		CENTRAL INDEX KEY:			0001190918

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-31703
		FILM NUMBER:		061137326

	MAIL ADDRESS:	
		STREET 1:		90 COLES ROAD
		CITY:			BLACKWOOD
		STATE:			NJ
		ZIP:			08012

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ESSEX CORP
		CENTRAL INDEX KEY:			0000355199
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-ENGINEERING SERVICES [8711]
		IRS NUMBER:				540846569
		STATE OF INCORPORATION:			VA
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		6708 ALEXANDER BELL DRIVE
		CITY:			COLUMBIA
		STATE:			MD
		ZIP:			21046
		BUSINESS PHONE:		3019397000

	MAIL ADDRESS:	
		STREET 1:		6708 ALEXANDER BELL DRIVE
		CITY:			COLUMBIA
		STATE:			MD
		ZIP:			21046

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ESSEX CORPORATION
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>jeffyorsz101006form3_ex.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2006-10-01</periodOfReport>

    <noSecuritiesOwned>1</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000355199</issuerCik>
        <issuerName>ESSEX CORP</issuerName>
        <issuerTradingSymbol>KEYW</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001190918</rptOwnerCik>
            <rptOwnerName>YORSZ JEFFREY</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>90 COLES ROAD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>BLACKWOOD</rptOwnerCity>
            <rptOwnerState>NJ</rptOwnerState>
            <rptOwnerZipCode>08012</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Vice President</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <ownerSignature>
        <signatureName>Jeffrey Yorsz</signatureName>
        <signatureDate>2006-10-02</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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