Western Asset Municipal Defined Opportunity Trust Inc. Announces Financial Position as of August 31, 2009

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NEW YORK--(Business Wire)--
Western Asset Municipal Defined Opportunity Trust Inc., which is listed on the
New York Stock Exchange under the symbol "MTT," today announced the financial
position of the Fund as of August 31, 2009.

Current Q Previous Q (a)
August 31, 2009 May 31, 2009

Total Net Assets $247,585,261 $240,734,790
NAV Per Share of Common Stock (b) $20.78 $20.20
Market Price Per Share $19.93 $20.06
Premium / Discount (4.09)% (0.69)%
Outstanding Shares 11,915,236 11,915,236

Total Net Investment Income (c) $3,299,231 $1,446,049
Total Net Investment Income Per Share (c) $0.28 $0.12

Total Net Realized/Unrealized Gain/(Loss) (c) $6,768,354 $13,256,512
Total Net Realized/Unrealized Gain/(Loss) Per Share (c) $0.57 $1.11

Undistributed/(Overdistributed) Net Investment Income (d) $455,795 $373,678
Undistributed/(Overdistributed) Net Investment Income
Per Share (d) $0.04 $0.03

Footnotes:
(a) For the Period March 27, 2009 (inception date) to May 31, 2009.
(b) NAVs are calculated as of the close of business on the last business day in the periods indicated above.
(c) For the quarter and period indicated.
(d) As of the period indicated above.

This financial data is unaudited.

The Fund files its semi-annual and annual reports with the Securities and
Exchange Commission as well as its complete schedule of portfolio holdings for
the first and third quarters of each fiscal year on Form N-Q.These reports are
available on the Commission`s website at www.sec.gov. To obtain information on
Form N-Q or a semi-annual or annual report from the Fund, shareholders can call
1-888-777-0102.

Western Asset Municipal Defined Opportunity Trust Inc., a non-diversified
closed-end investment management company, is advised by Legg Mason Partners Fund
Advisor, LLC, a wholly owned subsidiary of Legg Mason, Inc. and is sub-advised
by Western Asset Management Company, an affiliate of the investment manager.

Contact the Fund at 1-888-777-0102 for additional information, or consult the
Fund`s website at www.leggmason.com/cef.

All data and commentary provided within this press release is for informational
purposes only. Legg Mason, Inc. and all of its affiliates do not engage in
selling any of the shares of the Fund. The Fund's common shares are traded on
the New York Stock Exchange.

Legg Mason & Co., LLC
Brenda Grandell, 1-212-857-8087
Director, Closed-End Funds

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