Massachusetts's at-large congressional seat is an obsolete construct only used during the1792–1793 United States House of Representatives elections in Massachusetts. In that election, one of the state's then-14 representatives to theU.S. House was elected statewideat-large. At that time, theU.S. state ofMassachusetts included theDistrict of Maine.

Elected at-large wasDavid Cobb, who served in the3rd United States Congress (March 1793–March 1795). Other than Cobb, Massachusetts has never elected a member of the U.S. House at-large.

Member	Party	Years	Congress	Electoral history
David Cobb (Taunton)	Pro-Administration	March 4, 1793 – March 3, 1795	3rd	Elected in 1792. Redistricted to the7th district but lost re-election.

• 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. RetrievedDecember 31, 2020.

• Congressional districts of Massachusetts
• Former congressional districts of the United States
• At-large United States congressional districts
• Constituencies established in 1793
• Constituencies disestablished in 1795
• 1793 establishments in Massachusetts
• 1795 disestablishments in Massachusetts

• Articles with short description
• Short description matches Wikidata
• Use mdy dates from August 2023