Phineas Stearns (February 5, 1736 - March 27, 1798) was a farmer and blacksmith from Watertown, Massachusetts. In 1773 he participated in the Boston Tea Party. He was also a soldier in the American Revolutionary Army at Lake George (1756) and the leader of a company of militiamen at Dorchester Heights during the Siege of Boston. His efforts in the Battles of Lexington and Concord earned him the rank of captain.