Massachusetts's at-large congressional seat is an obsolete construct only used during the 1792–1793 United States House of Representatives elections in Massachusetts. In that election, one of the state's then-14 representatives to the U.S. House was elected statewide at-large. At that time, the U.S. state of Massachusetts included the District of Maine.

Elected at-large was David Cobb, who served in the 3rd United States Congress (March 1793–March 1795). Other than Cobb, Massachusetts has never elected a member of the U.S. House at-large.

Sole member

Member	Party	Years	Congress	Electoral history
David Cobb (Taunton)	Pro-Administration	March 4, 1793 – March 3, 1795	3rd	Elected in 1792. Redistricted to the 7th district but lost re-election.

References

• Martis, Kenneth C. (1989). The Historical Atlas of Political Parties in the United States Congress. New York: Macmillan Publishing Company.
• Martis, Kenneth C. (1982). The Historical Atlas of United States Congressional Districts. New York: Macmillan Publishing Company.
• Congressional Biographical Directory of the United States 1774–present
• "Our Campaigns - MA - At-Large Race - Nov 02, 1792". www.ourcampaigns.com. Retrieved December 31, 2020.