SUPPLEMENT TO THE

FIDELITY^® MASSACHUSETTS MUNICIPAL
MONEY MARKET FUND

SPARTAN^® MASSACHUSETTS MUNICIPAL
MONEY MARKET FUND

and

SPARTAN MASSACHUSETTS MUNICIPAL
INCOME FUND

Funds of Fidelity Massachusetts Municipal Trust

STATEMENT OF ADDITIONAL INFORMATION

March 31, 2005

<R>The following information replaces similar information found in the "Trustees and Officers" section on page 38.</R>

<R>Kenneth B. Robins (35)</R>

<R>Year of Election or Appointment: 2005</R> <R>Deputy Treasurer of Massachusetts Municipal Money Market, Spartan Massachusetts Municipal Money Market and Spartan Massachusetts Municipal Income. Mr. Robins also serves as Deputy Treasurer of other Fidelity funds (2005-present) and is an employee of FMR (2004-present). Before joining Fidelity Investments, Mr. Robins worked at KPMG LLP, where he was a partner in KPMG's department of professional practice (2002-2004) and a Senior Manager (1999-2000). In addition, Mr. Robins served as Assistant Chief Accountant, United States Securities and Exchange Commission (2000-2002). </R>

<R>The following information replaces the similar information in the "Distribution Services" section on page 55.</R>

<R>FDC or an affiliate may compensate, or upon direction make payments for certain retirement plan expenses to, intermediaries, including banks, broker-dealers, retirement plan sponsors, service-providers and administrators. A number of factors are considered in determining whether to pay these additional amounts. Such factors may include, without limitation, the level or type of services provided by the intermediary, the level or expected level of assets or sales of shares, the placing of the funds on a preferred or recommended fund list, access to an intermediary's personnel, and other factors. In addition to such payments, FDC or an affiliate may offer other incentives such as sponsorship of educational or client seminars relating to current products and issues, assistance in training and educating the intermediaries' personnel, payments or reimbursements for travel and related expenses associated with due diligence trips that an intermediary may undertake in order to explore possible business relationships with affiliates of FDC, and/or payments of costs and expenses associated with attendance at seminars, including travel, lodging, entertainment and meals. FDC anticipates that payments will be made to over a hundred intermediaries, including some of the largest broker-dealers and other financial firms, and certain of the payments described above may be significant to an intermediary. As permitted by SEC and the National Association of Securities Dealers rules, FDC or any affiliate may pay or allow other incentives or payments to intermediaries.</R>

MASB-05-03 May 29, 2005
1.475751.114

<R>Each fund's transfer agent or an affiliate may also make payments and reimbursements to certain intermediaries, including retirement plan sponsors, service providers and administrators, for providing recordkeeping and administrative services to plan participants or for providing other services to retirement plans. Please see "Transfer and Service Agent Agreements" in this SAI for more information.</R>

<R>If you have purchased shares of the fund through an investment professional, please speak with your investment professional to learn more about any payments his or her firm may receive from FMR, FDC and/or their affiliates, as well as fees and/or commissions the investment professional charges. You should also consult disclosures made by your investment professional at the time of purchase.</R>

<R>Any of the payments described in this section may represent a premium over payments made by other fund families. Investment professional may have an added incentive to sell or recommend a fund or a share class over others offered by competing fund families, or retirement plan sponsors may take these payments into account when deciding whether to include a fund as a plan investment option.</R>

<R>The following information supplements that found in the "Transfer and Service Agent Agreements" section on page 56.</R>

<R>Many fund shares are owned by certain intermediaries for the benefit of their customers. Since the funds often do not maintain an account for shareholders in those instances, some or all of the recordkeeping services for these accounts may be performed by third parties. FSC or an affiliate may make payments to intermediaries for recordkeeping and other services.</R>

<R>Retirement plans may also hold fund shares in the name of the plan or its trustee, rather than the plan participant. In situations where FSC or an affiliate does not provide recordkeeping services to a retirement plan, plan recordkeepers, who may have affiliated financial intermediaries who sell shares of the funds, may, upon direction, be paid for providing recordkeeping services to plan participants. Payments may also be made, upon direction, for other plan expenses </R>

<R>In certain situations where FSC or an affiliate provides recordkeeping services to a retirement plan, payments may be made to pay for plan expenses The amount of such payments may be based on investments in particular Fidelity funds, or may be fixed for a given period of time. Upon direction, payments may be made to plan sponsors, or at the direction of plan sponsors, third parties, for expenses incurred in connection with the plan.</R>