Stephen Cassin (16 February 1783 – 29 August 1857) was an officer in the United States Navy. Born in Philadelphia, the son of naval officer John Cassin, Cassin entered the United States Navy as a midshipman in 1800, and served in Philadelphia in the West Indies during the latter part of the Quasi-War with France. In the War of 1812, he commanded the USS Ticonderoga in the Battle of Lake Champlain and was awarded a gold medal for bravery by the United States Congress. He later served during the Second Barbary War on the USS Peacock and in the West Indies Squadron against piracy.