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)
• {{ill|Alexander III of Vladimir|ru|Александр Васильевич}}, 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
• {{lang|fr|Pont Alexandre III|italic=no}}, 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