USS Shark (SS-174) was a Porpoise-class submarine, the fifth ship of the United States Navy to be named for the shark. Her keel was laid down by the Electric Boat Company in Groton, Connecticut, on 24 October 1933. She was launched on 21 May 1935 sponsored by Miss Ruth Ellen Lonergan, 12-year-old daughter of United States Senator Augustine Lonergan of Connecticut, and commissioned on 25 January 1936, Lieutenant C.J.

USS Shark (SS-314), a Balao-class submarine, was the sixth ship of the United States Navy to be named for the shark, a large, marine predator with a cartilaginous skeleton. Her keel was laid down by the Electric Boat Company in Groton, Connecticut, on 28 January 1943. She was launched on 17 October 1943 sponsored by Mrs.

Seven United States Navy ships have borne the name Shark.