Alexander III may refer to:
Alexander III of Macedon (356 BC – 323 BC), also known as Alexander the Great Alexander (Byzantine emperor) (870–913), Byzantine emperor Pope Alexander III (1100s–1181) , grand duke of Vladimir (1328–1331), prince of Suzdal Alexander III of Scotland (1241–1286), king of Scotland Alexander III of Imereti (1609–1660), king of Imereti Alexander III of Kakheti (died 1739), king of Kakheti Alexander III of Russia (1845–1894), emperor of Russia , an arch bridge that spans the Seine in Paris Russian battleship , Russian warship Alexander III of Antioch (1869–1958), Greek Orthodox patriarch of Antioch
See also King Alexander (disambiguation)