USS Casa Grande (LSD-13) was a Casa Grande-class dock landing ship of the United States Navy, named in honor of Casa Grande Ruins National Monument near Coolidge, Arizona. The ship was originally authorized under the Lend-Lease Act as BAPM-5, the fifth of seven British Mechanized Artillery Transports, to be named HMS Portway (F144). Reclassified a Landing Ship Dock, LSD-13, on 1 July 1942, the contract for LSD-13 was awarded to Newport News Shipbuilding and Dry Dock Co., Newport News, Virginia, on 10 September 1942. Renamed HMS Spear, LSD-13's keel was laid down, on 11 November 1943. While under construction, LSD-13, -14, and -15 were reassigned back to the United States. The ship was renamed Casa Grande, and, as the first of her class in the U.S. Navy, gave her name to the class.