Peter, Hereditary Prince of Yugoslavia (born 5 February 1980), also known as Peter III Karadordevic (Serbian Cyrillic: ????? III ???????????? / Petar III Karadordevic), is the eldest son of Alexander, Crown Prince of Yugoslavia, and Princess Maria da Gloria of Orléans-Braganza.
Prince Peter is the grandson of King Peter II.
Peter, Hereditary Prince of Yugoslavia' is second in line after his father HRH Crown Prince Alexander to the defunct throne.