<SEC-DOCUMENT>0001193125-17-080282-index.html : 20170313
<SEC-HEADER>0001193125-17-080282.hdr.sgml : 20170313
<ACCEPTANCE-DATETIME>20170313160256
ACCESSION NUMBER:		0001193125-17-080282
CONFORMED SUBMISSION TYPE:	497
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20170313
DATE AS OF CHANGE:		20170313
EFFECTIVENESS DATE:		20170313

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			COLUMBIA ACORN TRUST
		CENTRAL INDEX KEY:			0000002110
		IRS NUMBER:				362692100
		STATE OF INCORPORATION:			MA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		497
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	002-34223
		FILM NUMBER:		17685235

	BUSINESS ADDRESS:	
		STREET 1:		227 W MONROE STE 3000
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606
		BUSINESS PHONE:		3126349200

	MAIL ADDRESS:	
		STREET 1:		227 W MONROE STE 3000
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60606

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	LIBERTY ACORN TRUST
		DATE OF NAME CHANGE:	20010424

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ACORN INVESTMENT TRUST
		DATE OF NAME CHANGE:	19940204

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ACORN FUND INC
		DATE OF NAME CHANGE:	19920703
<SERIES-AND-CLASSES-CONTRACTS-DATA>
<EXISTING-SERIES-AND-CLASSES-CONTRACTS>
<SERIES>
<OWNER-CIK>0000002110
<SERIES-ID>S000033622
<SERIES-NAME>Columbia Acorn Emerging Markets Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000103328
<CLASS-CONTRACT-NAME>Columbia Acorn Emerging Markets Fund Class A
<CLASS-CONTRACT-TICKER-SYMBOL>CAGAX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000103329
<CLASS-CONTRACT-NAME>Columbia Acorn Emerging Markets Fund Class C
<CLASS-CONTRACT-TICKER-SYMBOL>CGMCX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000103330
<CLASS-CONTRACT-NAME>Columbia Acorn Emerging Markets Fund Class I
<CLASS-CONTRACT-TICKER-SYMBOL>CATIX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000103331
<CLASS-CONTRACT-NAME>Columbia Acorn Emerging Markets Fund Class Z
<CLASS-CONTRACT-TICKER-SYMBOL>CEFZX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000122753
<CLASS-CONTRACT-NAME>Columbia Acorn Emerging Markets Fund Class R4
<CLASS-CONTRACT-TICKER-SYMBOL>CAERX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000122754
<CLASS-CONTRACT-NAME>Columbia Acorn Emerging Markets Fund Class R5
<CLASS-CONTRACT-TICKER-SYMBOL>CANRX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000128887
<CLASS-CONTRACT-NAME>Columbia Acorn Emerging Markets Fund Class Y
<CLASS-CONTRACT-TICKER-SYMBOL>CPHRX
</CLASS-CONTRACT>
</SERIES>
</EXISTING-SERIES-AND-CLASSES-CONTRACTS>
</SERIES-AND-CLASSES-CONTRACTS-DATA>
</SEC-HEADER>
<DOCUMENT>
<TYPE>497
<SEQUENCE>1
<FILENAME>d360729d497.htm
<DESCRIPTION>CAT
<TEXT>
Document 1 - file: d360729d497.htm

</DOCUMENT>
</SEC-DOCUMENT>