Boothbay is a town in Lincoln County, Maine, United States. The population was 3,120 at the 2010 census. It includes the villages of East Boothbay and Trevett. The Boothbay region is a center of summer tourist activity, and a significant part of its population does not live there year-round. Five shipyards are located in the town, the largest of which is Washburn & Doughty.