List of ships named SS St. Louis

Notable ships named SS St. Louis include:


 * MS St. Louis, a diesel-powered passenger ship often incorrectly referred to as "SS St. Louis"; built in 1925 by Bremer Vulkan for the Hamburg America Line; most notable as the ship that carried Jewish refugees from Nazi Germany in 1939 in an unsuccessful emigration attempt; scrapped in Hamburg in 1952
 * SS St. Louis (1894), a passenger steamer built by William Cramp and Sons of Philadelphia for the American Line; became USS St. Louis during Spanish-American War, and USS Louisville (SP-1644) during World War I; burned and sank at Hoboken, New Jersey in 1920; scrapped in Italy in 1925
 * SS St. Louis (1944), an 18,362-gross register ton container ship of Sea-Land Service active until 1988; an enlarged and rebuilt ship created from the former USS General M. L. Hersey (AP-148), a World War II transport ship of the United States Navy