USS Quincy (CA-71), a Baltimore class heavy cruiser of the United States Navy. She was the third ship to carry the name. Quincy was authorized on 17 June 1940; laid down by the Bethlehem Steel Company, Shipbuilding Division, Quincy, Massachusetts as St. Paul on 9 October 1941; renamed Quincy on 16 October 1942 to perpetuate that name after destruction of the second Quincy at the Battle of Savo Island on 9 August 1942. She was launched on 23 June 1943; sponsored by Mrs. Henry S. Morgan, a daughter of Charles Francis Adams, and commissioned at the U.S. Naval Drydock, South Boston Massachusetts on 15 December 1943, with Captain Elliot M. Senn in command.