<SEC-DOCUMENT>0000908996-22-000004-index.html : 20220506
<SEC-HEADER>0000908996-22-000004.hdr.sgml : 20220506
<ACCEPTANCE-DATETIME>20220505124353
ACCESSION NUMBER:		0000908996-22-000004
CONFORMED SUBMISSION TYPE:	497J
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20220505
DATE AS OF CHANGE:		20220505
EFFECTIVENESS DATE:		20220505

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PIONEER SERIES TRUST XI
		CENTRAL INDEX KEY:			0000078758
		IRS NUMBER:				042458787
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0930

	FILING VALUES:
		FORM TYPE:		497J
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	002-32773
		FILM NUMBER:		22895171

	BUSINESS ADDRESS:	
		STREET 1:		60 STATE ST
		STREET 2:		5TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02109
		BUSINESS PHONE:		617-742-7825

	MAIL ADDRESS:	
		STREET 1:		60 STATE STREET, 5TH FLOOR
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02109-1820

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	PIONEER VALUE FUND
		DATE OF NAME CHANGE:	20010402

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	PIONEER II
		DATE OF NAME CHANGE:	19920703

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	PIONEER II INC
		DATE OF NAME CHANGE:	19851112
<SERIES-AND-CLASSES-CONTRACTS-DATA>
<EXISTING-SERIES-AND-CLASSES-CONTRACTS>
<SERIES>
<OWNER-CIK>0000078758
<SERIES-ID>S000010136
<SERIES-NAME>Pioneer Core Equity Fund
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000028137
<CLASS-CONTRACT-NAME>Pioneer Core Equity Fund: Class A
<CLASS-CONTRACT-TICKER-SYMBOL>PIOTX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000028139
<CLASS-CONTRACT-NAME>Pioneer Core Equity Fund: Class C
<CLASS-CONTRACT-TICKER-SYMBOL>PCOTX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000028140
<CLASS-CONTRACT-NAME>Pioneer Core Equity Fund: Class Y
<CLASS-CONTRACT-TICKER-SYMBOL>PVFYX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000202493
<CLASS-CONTRACT-NAME>Pioneer Core Equity Fund: Class K
<CLASS-CONTRACT-TICKER-SYMBOL>PCEKX
</CLASS-CONTRACT>
<CLASS-CONTRACT>
<CLASS-CONTRACT-ID>C000203260
<CLASS-CONTRACT-NAME>Pioneer Core Equity Fund: Class R
<CLASS-CONTRACT-TICKER-SYMBOL>CERPX
</CLASS-CONTRACT>
</SERIES>
</EXISTING-SERIES-AND-CLASSES-CONTRACTS>
</SERIES-AND-CLASSES-CONTRACTS-DATA>
</SEC-HEADER>
<DOCUMENT>
<TYPE>497J
<SEQUENCE>1
<FILENAME>st11ce050522prosai497j.txt
<DESCRIPTION>497(J) CERTIFICATION LETTER
<TEXT>
Document 1 - file: st11ce050522prosai497j.txt

</DOCUMENT>
</SEC-DOCUMENT>