William III

William III or William the Third may refer to:

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Kings

• William III of Sicily (Template:C.)
• William III of England and Ireland or William III of Orange or William II of Scotland (1650–1702)
• William III of the Netherlands and Luxembourg (1817–1890)

Nobles

• William III, Duke of Aquitaine (913–963)
• William II, Count of Provence, also numbered William III of Provence, (late 980s–1018)
• William III, Count of Toulouse, also styled William III of Provence (Template:C.–1037)
• William III of Provence (died after 1037)
• William III of Weimar (died 1039)
• William III, Marquess of Montferrat (Template:C.–1042)
• William III, Lord of Montpellier (died 1058)
• William V, Count of Angoulême, also known as William Taillefer III (1084–1118/20)
• William III, Count of Burgundy (Template:C.–1127)
• William III of Forcalquier (died 1129)
• William III of Mâcon (1088–1156)
• William III, Count of Nevers (Template:C.–1161)
• William III, Count of Ponthieu (Template:C.–1172)
• William III, Count of Jülich (Template:R.)
• William II, Count of Flanders, also styled William III of Dampierre (1224–1251)
• William de Cantilupe (died 1254)
• William III of Baux (died 1257)
• William III {{#invoke:Lang|lang}} of Cagliari (Template:R.)
• William III of Geneva (1280-1320)
• William I, Count of Hainaut or William III of Holland (Template:C.–1337)
• William III, Earl of Ross, known as {{#invoke:Lang|lang}}, 5th Earl of Ross (died 1372)
• William I, Duke of Bavaria or William III of Hainaut (1330–1389)
• William III, Duke of Bavaria (1375–1435)
• William III of Isenburg-Wied (Template:R.)
• William III, Princely count of Henneberg-Schleusingen (1434–1480)
• William III, Landgrave of Thuringia (1425–1482)
• William III, Landgrave of Hesse (1471–1500)

Horses

• William the Third (horse)

See also

• Guillaume III (disambiguation), the French equivalent of William III
• King William (disambiguation)
• Prince William (disambiguation)
• List of people named William#Royalty and nobility