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 (912–913)
- Pope Alexander III (1100s–1181), pope from 1159 to 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