Alexander, Crown Prince of Yugoslavia
Alexander, Crown Prince of Yugoslavia, also claiming the crowned royal title of Alexander II Karađorđević (Serbian Cyrillic: Александар II Карађорђевић / Aleksandar II Karađorđević; born 17 July 1945), is the head of the House of Karađorđević, the former royal house of the defunct Kingdom of Yugoslavia and its predecessor the Kingdom of Serbia. Alexander is the only child of King Peter II and his wife, Princess Alexandra of Greece and Denmark. He held the position of crown prince in the Democratic Federal Yugoslavia for the first four-and-a-half months of his life, from his birth until the declaration of the Federal People's Republic of Yugoslavia later in 1945.

Born and raised in the United Kingdom, he enjoys close relationships with his relatives in the British royal family. His godparents were King George VI of the United Kingdom and his daughter, the then-Princess Elizabeth (now Queen Elizabeth II). Through his father Alexander is a direct descendant of Queen Victoria, through his great-great-grandfather Prince Alfred, Duke of Saxe-Coburg and Gotha, Victoria's second eldest son. Maternally he is also a direct descendant of Queen Victoria, through his great-great-grandmother Victoria, Empress of Germany, Victoria's eldest daughter. Alexander is known for his support of monarchism and his humanitarian work.