<SEC-DOCUMENT>0001379491-21-002397-index.html : 20210528
<SEC-HEADER>0001379491-21-002397.hdr.sgml : 20210528
<ACCEPTANCE-DATETIME>20210528120114
ACCESSION NUMBER:		0001379491-21-002397
CONFORMED SUBMISSION TYPE:	497K
PUBLIC DOCUMENT COUNT:		7
FILED AS OF DATE:		20210528
DATE AS OF CHANGE:		20210528
EFFECTIVENESS DATE:		20210528

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Fidelity Colchester Street Trust
		CENTRAL INDEX KEY:			0000356173
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0331

	FILING VALUES:
		FORM TYPE:		497K
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	002-74808
		FILM NUMBER:		21977955

	BUSINESS ADDRESS:	
		STREET 1:		245 SUMMER STREET
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02210
		BUSINESS PHONE:		617-563-7000

	MAIL ADDRESS:	
		STREET 1:		245 SUMMER STREET
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02210

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	COLCHESTER STREET TRUST
		DATE OF NAME CHANGE:	19980324

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	FIDELITY INSTITUTIONAL CASH PORTFOLIOS
		DATE OF NAME CHANGE:	19920703

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CASH INVESTMENT FUND
		DATE OF NAME CHANGE:	19850414
<SERIES-AND-CLASSES-CONTRACTS-DATA>
<EXISTING-SERIES-AND-CLASSES-CONTRACTS>
<SERIES>
<OWNER-CIK>0000356173
<SERIES-ID>S000004822
<SERIES-NAME>Money Market Portfolio
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000013041
<CLASS-CONTRACT-NAME>Class I
<CLASS-CONTRACT-TICKER-SYMBOL>FMPXX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000013086
<CLASS-CONTRACT-NAME>Class II
<CLASS-CONTRACT-TICKER-SYMBOL>FCIXX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000013087
<CLASS-CONTRACT-NAME>Class III
<CLASS-CONTRACT-TICKER-SYMBOL>FCOXX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000013088
<CLASS-CONTRACT-NAME>Select Class
<CLASS-CONTRACT-TICKER-SYMBOL>FMYXX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000056571
<CLASS-CONTRACT-NAME>Institutional Class
<CLASS-CONTRACT-TICKER-SYMBOL>FNSXX
</CLASS-CONTRACT>
</SERIES>
</EXISTING-SERIES-AND-CLASSES-CONTRACTS>
</SERIES-AND-CLASSES-CONTRACTS-DATA>
</SEC-HEADER>
<DOCUMENT>
<TYPE>497K
<SEQUENCE>1
<FILENAME>filing699539674.htm
<TEXT>
Document 1 - file: filing699539674.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>fipro_logo.jpg
<TEXT>
Document 2 - file: fipro_logo.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>img699368850.jpg
<TEXT>
Document 3 - file: img699368850.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>img699204961.jpg
<TEXT>
Document 4 - file: img699204961.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>img699209910.jpg
<TEXT>
Document 5 - file: img699209910.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>img699214854.jpg
<TEXT>
Document 6 - file: img699214854.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>img699376501.jpg
<TEXT>
Document 7 - file: img699376501.jpg

</DOCUMENT>
</SEC-DOCUMENT>