Motor Torpedo Boat PT-59 was a PT-20-class motor torpedo boat of the United States Navy, built by the Electric Launch Company of Bayonne, New Jersey. The boat was laid down as Motor Boat Submarine Chaser PTC-21, and was reclassified as BPT-11 when assigned to transfer to Britain under Lend-Lease. However, this was cancelled, and she was reclassified as PT-59 prior to launch on 8 July 1941, and was completed on 23 July 1941. She is noted for being the second command of then-Lieutenant, junior grade (LTJG) John F. Kennedy (who later became President of the United States) in the Pacific Theater during World War II.