Alexander III

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)
 * Alexander III of Vladimir, 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 Russia (1845–1894), emperor of Russia
 * Pont Alexandre III, an arch bridge that spans the Seine in Paris
 * Russian battleship Imperator Aleksandr III, Russian warship
 * Alexander III of Antioch (1869–1958), Greek Orthodox patriarch of Antioch