Mount Prince (74°58′S134°11′W) is a prominent butte (640 m) marking the north end of Perry Range on the coast of Marie Byrd Land. The feature was discovered and photographed from aircraft of the United States Antarctic Service (USAS), 1939–41, and was mapped by United States Geological Survey (USGS) from surveys and air photos, 1959-65. Named by Advisory Committee on Antarctic Names (US-ACAN) for Joseph F. Prince, ADR2, U.S.