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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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<SEC-DOCUMENT>0001305767-09-000017.txt : 20090915
<SEC-HEADER>0001305767-09-000017.hdr.sgml : 20090915
<ACCEPTANCE-DATETIME>20090915150206
ACCESSION NUMBER:		0001305767-09-000017
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20090915
DATE AS OF CHANGE:		20090915
EFFECTIVENESS DATE:		20090915

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			PIONEER MUNICIPAL HIGH INCOME ADVANTAGE TRUST
		CENTRAL INDEX KEY:			0001258943
		IRS NUMBER:				810634319
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0331

	FILING VALUES:
		FORM TYPE:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	811-21409
		FILM NUMBER:		091069782

	MAIL ADDRESS:	
		STREET 1:		60 STATE STREET
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02109

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	PIONEER MUNICIPAL ADVANTAGE TRUST
		DATE OF NAME CHANGE:	20030807
</SEC-HEADER>
<DOCUMENT>
<TYPE>DEFA14A
<SEQUENCE>1
<FILENAME>mhiat091509pxyltrdefa14a.txt
<DESCRIPTION>SHAREHOLDER LETTER FOR MUNI HI ADVANTAGE TRUST
<TEXT>


                                                      Shareholder Proxy Services
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                                                              September 15, 2009

                                IMPORTANT MATTER

REG1
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REG 2
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REG 3
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REG 4
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REG 5
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REG 6
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REG 7
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Re:  Pioneer Municipal High Income Advantage Trust (NYSE: MAV)
     Cusip: 723762100


Dear Shareholder:

Our firm has been retained by Pioneer Municipal High Income Advantage Trust to
contact you regarding your investment in common shares of the Trust, as of
record date July 9, 2009. We have attempted to contact you, but have yet to be
successful.

Please  contact  us   immediately  at   1-800-232-1064  between  the  hours of
9:00 a.m. and 11:00 p.m., Eastern Standard Time.

Thank you in advance for your assistance with this matter.


Sincerely,


Fred Bonnell
Investor Relations Supervisor
Shareholder Services
The Altman Group

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                                                                        "tag id"

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                  60 East 42nd Street, New York, New York 10165

</TEXT>
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