Henry III
Henry III may refer to:
- Henry III, Holy Roman Emperor
- King Henry III of Castile
- King Henry III of England
- King Henry III of France
- King Henry III of Navarre, also King Henry IV of France
- Henry III, Prince of Anhalt-Aschersleben
- Henry III, Prince of Condé
- Henry III, Duke of Bavaria
- Henry III, Duke of Brabant
- Henry III, Duke of Brunswick-Grubenhagen
- Henry III, Duke of Brunswick-Lüneburg
- Henry III, Duke of Carinthia
- Henry III, Duke of Głogów
- Henry III, Duke of Limburg
- Henry III, Duke of Mecklenburg
- Henry III, Duke of Münsterberg-Oels
- Henry III, Duke of Saxony
- Henry III the White, Duke of Wrocław
- Henry III, Landgrave of Upper Hesse
- Henry III, Margrave of Meissen
- Henry III, Marquis of Namur
- Henry III, Count of Bar
- Henry III, Count of Champagne
- Henry III, Count of Gorizia
- Henry III, Count of Holstein-Rendsburg
- Henry III, Count of Louvain
- Henry III, Count of Luxembourg
- Henry III, Count of Sayn
- Henry III, Count of Schauenburg-Holstein
- Henry III of Nassau-Breda
- Henry III, Lord of Waldeck