Exhibit (j)

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in this Post-Effective Amendment No. 48 to the Registration Statement No. 811-03361 on Form N-1A of our report dated March 14, 2006, relating to the financial statements and financial highlights of Fidelity Massachusetts Municipal Trust, including Fidelity Massachusetts AMT Tax-Free Money Market Fund, appearing in the Annual Report on Form N-CSR of Fidelity Massachusetts Municipal Trust for the year ended January 31, 2006.

We also consent to the reference to us under the heading "Independent Registered Public Accounting Firm" in the Statement of Additional Information and "Financial Highlights" in the Prospectus Supplement, which are a part of such Registration Statement.

/s/Deloitte & Touche LLP

Deloitte & Touche LLP

Boston, Massachusetts

February 16, 2006