John Barry Larson is an American politician and businessman serving as the U.S. representative for Connecticut's 1st congressional district since 1999. The district is based in the state capital, Hartford. A member of the Democratic Party, Larson chaired the House Democratic Caucus during the 111th and 112th United States Congress.

Connecticut's 1st congressional district is a congressional district in the U.S. state of Connecticut. Located in the north-central part of the state, the district is anchored by the state capital of Hartford. It encompasses much of central Connecticut and includes towns within Hartford, Litchfield, and Middlesex counties.