<SEC-DOCUMENT>0001047469-21-000818-index.html : 20210401
<SEC-HEADER>0001047469-21-000818.hdr.sgml : 20210401
<ACCEPTANCE-DATETIME>20210401162050
ACCESSION NUMBER:		0001047469-21-000818
CONFORMED SUBMISSION TYPE:	DEF 14A
PUBLIC DOCUMENT COUNT:		12
CONFORMED PERIOD OF REPORT:	20210513
FILED AS OF DATE:		20210401
DATE AS OF CHANGE:		20210401

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CORPORATE OFFICE PROPERTIES TRUST
		CENTRAL INDEX KEY:			0000860546
		STANDARD INDUSTRIAL CLASSIFICATION:	REAL ESTATE INVESTMENT TRUSTS [6798]
		IRS NUMBER:				232947217
		STATE OF INCORPORATION:			MD
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		DEF 14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-14023
		FILM NUMBER:		21798354

	BUSINESS ADDRESS:	
		STREET 1:		6711 COLUMBIA GATEWAY DRIVE
		STREET 2:		SUITE 300
		CITY:			COLUMBIA
		STATE:			MD
		ZIP:			21046
		BUSINESS PHONE:		4432855400

	MAIL ADDRESS:	
		STREET 1:		6711 COLUMBIA GATEWAY DRIVE
		STREET 2:		SUITE 300
		CITY:			COLUMBIA
		STATE:			MD
		ZIP:			21046

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CORPORATE OFFICE PROPERTIES TRUST INC
		DATE OF NAME CHANGE:	19980105

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ROYALE INVESTMENTS INC
		DATE OF NAME CHANGE:	19930328

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ROYALE REIT INC
		DATE OF NAME CHANGE:	19600201
</SEC-HEADER>
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<TYPE>DEF 14A
<SEQUENCE>1
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<DESCRIPTION>DEF 14A
<TEXT>
Document 1 - file: a2243097zdef14a.htm

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<SEQUENCE>2
<FILENAME>g34841.jpg
<DESCRIPTION>G34841.JPG
<TEXT>
Document 2 - file: g34841.jpg

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<SEQUENCE>3
<FILENAME>g334099.jpg
<DESCRIPTION>G334099.JPG
<TEXT>
Document 3 - file: g334099.jpg

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<SEQUENCE>4
<FILENAME>g911046.jpg
<DESCRIPTION>G911046.JPG
<TEXT>
Document 4 - file: g911046.jpg

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<FILENAME>g526500.jpg
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<TEXT>
Document 5 - file: g526500.jpg

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<SEQUENCE>6
<FILENAME>g339388.jpg
<DESCRIPTION>G339388.JPG
<TEXT>
Document 6 - file: g339388.jpg

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<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>g43386.jpg
<DESCRIPTION>G43386.JPG
<TEXT>
Document 7 - file: g43386.jpg

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<SEQUENCE>8
<FILENAME>g262432.jpg
<DESCRIPTION>G262432.JPG
<TEXT>
Document 8 - file: g262432.jpg

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<DESCRIPTION>G353950.JPG
<TEXT>
Document 9 - file: g353950.jpg

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<TYPE>GRAPHIC
<SEQUENCE>10
<FILENAME>g81470.jpg
<DESCRIPTION>G81470.JPG
<TEXT>
Document 10 - file: g81470.jpg

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<TYPE>GRAPHIC
<SEQUENCE>11
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<TEXT>
Document 11 - file: g23832bgi001.gif

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<SEQUENCE>12
<FILENAME>g23832bgi002.jpg
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<TEXT>
Document 12 - file: g23832bgi002.jpg

</DOCUMENT>
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