Samuel Lawrence (1754–1827) was an American revolutionary from Groton, Massachusetts. Samuel Lawrence fought at the Battle of Bunker Hill under Henry Farwell who was killed there. Samuel served in the army for 3 and half years from 1775 to 1778, and rose within the U.S. Army to the rank of major. While in the army he married Susanna Parker on July 22, 1777. He was adjutant under General John Sullivan in the Battle of Rhode Island and served there until he retired from service in 1778. After the war, Lawrence returned to Groton, where he settled as a farmer. In 1793, he helped to found Groton Academy (now Lawrence Academy at Groton).