Harpswell is a town in Cumberland County, Maine, United States, on Casco Bay in the Gulf of Maine. The population was 5,031 at the 2020 census.
Harpswell is composed of land contiguous with the rest of Cumberland County, called Harpswell Neck, as well as three large islands connected by bridges: Sebascodegan Island (locally known as Great Island), Orr's Island, and Bailey Island. Ninety-five smaller islands are within Harpswell's municipal borders.
