USS S-24 (SS-129) was a first-group (S-1 or "Holland") S-class submarine of the United States Navy. Her keel was laid down on 1 November 1918 by the Bethlehem Shipbuilding Corporation in Quincy, Massachusetts. She was launched on 27 June 1922 sponsored by Mrs. Herbert B. Loper, and commissioned on 24 August 1923 with Lieutenant Commander Louis E. Denfeld in command. Decommissioned by the Royal Navy in May 1944 she was returned to the United States Navy in December 1944, S-24 was struck from the Navy List and was intentionally sunk off Portland Oregon as an ASDIC target on 25 August 1947.