-----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,
 TDXjZG/Yi0eiljGTGMlFeAKLkY8urhtFcKxFnaY+Pq4lnE7hELrjJawQWlUHsgHs
 UvnIfv4wYMFtMsC9bYUgGQ==

<SEC-DOCUMENT>0001219724-03-000001.txt : 20030904
<SEC-HEADER>0001219724-03-000001.hdr.sgml : 20030904
<ACCEPTANCE-DATETIME>20030904162312
ACCESSION NUMBER:		0001219724-03-000001
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030904
FILED AS OF DATE:		20030904

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			FOX LESLIE B
		CENTRAL INDEX KEY:			0001219724

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12252
		FILM NUMBER:		03881775

	BUSINESS ADDRESS:	
		STREET 1:		C/O EQUITY RESIDENTIAL
		STREET 2:		2 N RIVERSIDE PLAZA STE 400
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606
		BUSINESS PHONE:		3129281259

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
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>c0001219724d20030904f4f.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
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<ownershipDocument><schemaVersion>X0201</schemaVersion>    <documentType>4</documentType><periodOfReport>2003-09-04</periodOfReport><notSubjectToSection16>0</notSubjectToSection16><issuer><issuerCik>0000906107</issuerCik><issuerName>EQUITY RESIDENTIAL</issuerName>        <issuerTradingSymbol>EQR</issuerTradingSymbol></issuer><reportingOwner><reportingOwnerId><rptOwnerCik>0001219724</rptOwnerCik><rptOwnerName>FOX LESLIE B</rptOwnerName></reportingOwnerId><reportingOwnerAddress><rptOwnerStreet1>TWO NORTH RIVERSIDE PLAZA, SUITE 400</rptOwnerStreet1><rptOwnerStreet2></rptOwnerStreet2><rptOwnerCity>CHICAGO</rptOwnerCity><rptOwnerState>IL</rptOwnerState><rptOwnerZipCode>60606</rptOwnerZipCode><rptOwnerStateDescription></rptOwnerStateDescription></reportingOwnerAddress><reportingOwnerRelationship><isDirector>0</isDirector><isOfficer>1</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther><officerTitle>Executive Vice President</officerTitle><otherText></otherText></reportingOwnerRelationship></repor
tingOwner><nonDerivativeTable><nonDerivativeTransaction><securityTitle><value>Common Shares of Beneficial Interest</value></securityTitle><transactionDate><value>2003-09-04</value></transactionDate><deemedExecutionDate></deemedExecutionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>M</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>17730</value></transactionShares><transactionPricePerShare><value>25.844</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>33438</value><footnoteId id="F1"/></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value></value></natureOfOwnership></o
wnershipNature></nonDerivativeTransaction><nonDerivativeTransaction><securityTitle><value>Common Shares of Beneficial Interest</value></securityTitle><transactionDate><value>2003-09-04</value></transactionDate><deemedExecutionDate></deemedExecutionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>S</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>17730</value></transactionShares><transactionPricePerShare><value>29.6088</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>15708</value><footnoteId id="F1"/></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value></value></natureOf
Ownership></ownershipNature></nonDerivativeTransaction><nonDerivativeTransaction><securityTitle><value>Common Shares of Beneficial Interest</value></securityTitle><transactionDate><value>2003-09-04</value></transactionDate><deemedExecutionDate></deemedExecutionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>M</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>5108</value></transactionShares><transactionPricePerShare><value>27.2</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>20816</value><footnoteId id="F1"/></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value></value><
/natureOfOwnership></ownershipNature></nonDerivativeTransaction><nonDerivativeTransaction><securityTitle><value>Common Shares of Beneficial Interest</value></securityTitle><transactionDate><value>2003-09-04</value></transactionDate><deemedExecutionDate></deemedExecutionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>S</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>5108</value></transactionShares><transactionPricePerShare><value>29.6088</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>15708</value><footnoteId id="F1"/></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><val
ue></value></natureOfOwnership></ownershipNature></nonDerivativeTransaction><nonDerivativeHolding><securityTitle><value>Common Shares of Beneficial Interest</value></securityTitle><postTransactionAmounts><sharesOwnedFollowingTransaction><value>87103</value><footnoteId id="F2"/></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>I</value></directOrIndirectOwnership><natureOfOwnership><value>SERP</value></natureOfOwnership></ownershipNature></nonDerivativeHolding></nonDerivativeTable><derivativeTable><derivativeHolding><securityTitle><value>Non-Qualified Stock Option (right to buy)</value></securityTitle><conversionOrExercisePrice><value>23.55</value></conversionOrExercisePrice><exerciseDate><value>2004-02-07</value></exerciseDate><expirationDate><value>2013-02-07</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Shares of Beneficial Interest</value></underlyingSecurityTitle><underlyingSecurityShares><value>30261</value>
</underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>30261</value><footnoteId id="F3"/></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value></value></natureOfOwnership></ownershipNature></derivativeHolding><derivativeTransaction><securityTitle><value>Non-Qualified Stock Option (right to buy)</value></securityTitle><conversionOrExercisePrice><value>25.844</value></conversionOrExercisePrice><transactionDate><value>2003-09-04</value></transactionDate><deemedExecutionDate></deemedExecutionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>M</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>17730</value></transactionShares><transactionPricePerShare><value>29.6088</value></transactionPricePerShare><transactionAcquiredDisposedCode><
value>D</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>2002-01-18</value></exerciseDate><expirationDate><value>2011-01-18</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Shares of Beneficial Interest</value></underlyingSecurityTitle><underlyingSecurityShares><value>17730</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>8866</value><footnoteId id="F4"/></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value></value></natureOfOwnership></ownershipNature></derivativeTransaction><derivativeTransaction><securityTitle><value>Non-Qualified Stock Option (right to buy)</value></securityTitle><conversionOrExercisePrice><value>27.2</value></conversionOrExercisePrice><transactionDate><value>2003-09-04</value></transactionDate><deemedExecutionDate></deemedExecutionDat
e><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>M</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>5108</value></transactionShares><transactionPricePerShare><value>29.6088</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>2003-01-16</value></exerciseDate><expirationDate><value>2012-01-16</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Common Shares of Beneficial Interest</value></underlyingSecurityTitle><underlyingSecurityShares><value>5108</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>10217</value><footnoteId id="F5"/></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value></val
ue></natureOfOwnership></ownershipNature></derivativeTransaction></derivativeTable><footnotes><footnote id="F1">Shares reported on this line were acquired through profit sharing contributions and dividend reinvestment activity in the Reporting Person's ADVANTAGE Retirement Savings Plan, a Plan qualified under Section 401(k) of the Internal Revenue Code of 1986, as amended. Such shares represent acquisitions through the fiscal year ending December 31, 2001.</footnote><footnote id="F2">Shares reported herein are owned by The Security Trust Company, as Trustee of the Equity Residential Supplemental Retirement Plan for the benefit of the Reporting Person.</footnote><footnote id="F3">10,087 share options reported herein will become exercisable on February 7, 2004; 10,087 share options will become exercisable on February 7, 2005; and 10,087 share options will become exercisable on February 7, 2006.</footnote><footnote id="F4">17,730 share options are currently exercisable; and 8,866 share options will become exerc
isable on January 18, 2004.</footnote><footnote id="F5">5,108 share options reported herein are currently exercisable; 5,108 share options will become exercisable on January 16, 2004; and 5,109 share options will become exercisable on January 16, 2005.</footnote></footnotes><ownerSignature><signatureName>Leslie B Fox</signatureName><signatureDate>2003-09-04</signatureDate></ownerSignature></ownershipDocument>

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</SEC-DOCUMENT>
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