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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 SfpDOSktu0x2StVsMsraB4xwUFsGK8hj6dbSBdxUOotHr1jtc75j+8aFSov8wdHb
 NyfLR0328X1DTAqbwgaWqQ==

<SEC-DOCUMENT>0001182862-03-000002.txt : 20031016
<SEC-HEADER>0001182862-03-000002.hdr.sgml : 20031016
<ACCEPTANCE-DATETIME>20031016161730
ACCESSION NUMBER:		0001182862-03-000002
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20031015
FILED AS OF DATE:		20031016

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			EQUITY RESIDENTIAL
		CENTRAL INDEX KEY:			0000906107
		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
		IRS NUMBER:				363877868
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		EQUITY RESIDENTIAL
		STREET 2:		2 N RIVERSIDE PLAZA, STE 400
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606
		BUSINESS PHONE:		3129281178

	MAIL ADDRESS:	
		STREET 1:		TWO N RIVERSIDE PLAZA
		STREET 2:		SUITE 450
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	EQUITY RESIDENTIAL PROPERTIES TRUST
		DATE OF NAME CHANGE:	19930524

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			ROGERS DESIREE G
		CENTRAL INDEX KEY:			0001182862

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12252
		FILM NUMBER:		03944038

	BUSINESS ADDRESS:	
		STREET 1:		130 EST RANDOLPH DR
		STREET 2:		PEOPLES ENERGY CORP
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60601
		BUSINESS PHONE:		3122404000

	MAIL ADDRESS:	
		STREET 1:		130 EAST RANDOLPH DRIVE
		STREET 2:		PEOPLES ENERGY CORP
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60601
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>c0001182862d20031016f4f.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<ownershipDocument><schemaVersion>X0201</schemaVersion>    <documentType>4</documentType><periodOfReport>2003-10-15</periodOfReport><notSubjectToSection16>0</notSubjectToSection16><issuer><issuerCik>0000906107</issuerCik><issuerName>EQUITY RESIDENTIAL</issuerName>        <issuerTradingSymbol>EQR</issuerTradingSymbol></issuer><reportingOwner><reportingOwnerId><rptOwnerCik>0001182862</rptOwnerCik><rptOwnerName>ROGERS DESIREE G</rptOwnerName></reportingOwnerId><reportingOwnerAddress><rptOwnerStreet1>PEOPLES ENERGY CORPORATION</rptOwnerStreet1><rptOwnerStreet2>130 EAST RANDOLPH DRIVE, 16TH FLOOR</rptOwnerStreet2><rptOwnerCity>CHICAGO</rptOwnerCity><rptOwnerState>IL</rptOwnerState><rptOwnerZipCode>60601-6207</rptOwnerZipCode><rptOwnerStateDescription></rptOwnerStateDescription></reportingOwnerAddress><reportingOwnerRelationship><isDirector>1</isDirector><isOfficer>0</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther><officerTitle></officerTitle><otherText></otherText></reportingOwnerRelationsh
ip></reportingOwner><nonDerivativeTable><nonDerivativeTransaction><securityTitle><value>Common Shares of Beneficial Interest</value></securityTitle><transactionDate><value>2003-10-15</value></transactionDate><deemedExecutionDate></deemedExecutionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>A</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>710</value></transactionShares><transactionPricePerShare><value>29.7</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>710</value><footnoteId id="F1"/></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value></value></natureOfOwnership
></ownershipNature></nonDerivativeTransaction></nonDerivativeTable><derivativeTable><derivativeTransaction><securityTitle><value>Non-Qualified Stock Option (right to buy)</value></securityTitle><conversionOrExercisePrice><value>29.7</value></conversionOrExercisePrice><transactionDate><value>2003-10-15</value></transactionDate><deemedExecutionDate></deemedExecutionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>A</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>3704</value></transactionShares><transactionPricePerShare><value>29.7</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>2003-10-15</value></exerciseDate><expirationDate><value>2013-10-15</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Shares of Beneficial Interest</value></underlyingSecurityTitle><un
derlyingSecurityShares><value>3704</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>3704</value><footnoteId id="F2"/></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value></value></natureOfOwnership></ownershipNature></derivativeTransaction></derivativeTable><footnotes><footnote id="F1">Shares reported herein were acquired through a restricted share award pursuant to the terms of the Company's 2002 Share Incentive Plan and are scheduled to vest on October 15, 2006.</footnote><footnote id="F2">The options become exercisable in three equal installments on April 15, 2004, October 15, 2004 and October 15, 2005.</footnote></footnotes><ownerSignature><signatureName>Desiree G. Rogers</signatureName><signatureDate>2003-10-16</signatureDate></ownerSignature></ownershipDocument>

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