Alexander III
Alexander III may refer to:
- Alexander III of Macedon, also known as Alexander the Great
- Alexander , Byzantine emperor
- Pope Alexander III
- , grand duke of Vladimir, prince of Suzdal
- Alexander III of Scotland, king of Scotland
- Alexander III of Imereti, king of Imereti
- Alexander III of Russia, 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, Greek Orthodox patriarch of Antioch