Pembroke is a town in Washington County, Maine, United States. The population was 788 at the 2020 census. The town is home to a reversing falls on Mahar's Point.

Washington County is a county located in the U.S. state of Maine. As of the 2020 census, its population was 31,095, making it the third-least populous county in Maine. Its county seat is Machias. The county was established on June 25, 1789. It borders the Canadian province of New Brunswick.