USS St. Mary's

USS St. Mary's or USS St. Marys has been the name of more than one United States Navy ship, and may refer to:


 * USS St. Mary's (1798), a galley built in 1798 and transferred to the United States Revenue Cutter Service in 1801
 * USS St. Mary's (1844), a sloop-of-war in commission from 1844 to 1873
 * USS St. Mary's (SP-1457), also spelled USS St. Marys, a patrol boat in service from 1917 to 1918
 * USS St. Mary's (APA-126), an attack transport in commission from 1944 to 1946


 * See also
 * St. Mary's, was a side-wheeled steamer acquired by the U.S. Navy and renamed USS Hatteras (1861) in 1861
 * CSS St. Mary, a Confederate States Navy ship captured in 1863 by Union forces and commissioned into the U.S. Navy as USS Alexandria (1862)
 * USS St. Mary's River (LSM(R)-528)