USS Maricopa County (LST-938) was an LST-542-class tank landing ship built for the United States Navy during World War II. Like many of her class, she was not named and is properly referred to by her hull designation. She was later named after Maricopa County, Arizona, she was the only US Naval vessel to bear the name.

Landing Ship, Tank (LST), or tank landing ship, is the naval designation for ships first developed during World War II (1939–1945) to support amphibious operations by carrying tanks, vehicles, cargo, and landing troops directly onto a low slope beach with no docks or piers. The shallow draft and bow doors and ramps enabled amphibious assaults on almost any beach.