Boothbay Harbor is a town in Lincoln County, Maine, United States. The population was 2,027 at the 2020 census. It includes the neighborhoods of Bayville, Mount Pisgah, and Sprucewold, and the villages of Isle of Springs and West Boothbay Harbor. During summer months, the entire Boothbay Harbor region is a popular yachting and tourist destination.

Lincoln County is a county located in the U.S. state of Maine. As of the 2020 census, the population was 35,237. Its seat is Wiscasset. The county was founded in 1760 by the Massachusetts General Court from a portion of York County, Massachusetts and named after the English city Lincoln, the birthplace of Massachusetts Bay Provincial Governor Thomas Pownall.