Maine's 1st congressional district is a congressional district in the U.S. state of Maine. The geographically smaller of the state's two congressional districts, the district covers the southern coastal area of the state. The district consists of all of Cumberland, Knox, Lincoln, Sagadahoc, and York counties and most of Kennebec County. Located within the district are the cities of Portland, Brunswick, and Saco. The district is currently represented by Democrat Chellie Pingree.

Chellie Marie Pingree is an American politician serving as the U.S. representative for Maine's 1st congressional district since 2009. Her district includes most of the southern part of the state, including Portland and Augusta.