William of Orange usually refers to either: William the Silent, William I, (1533–1584), Prince of Orange, leader of the Dutch Revolt, founder of the House Orange-Nassau and the United Provinces as a state William III of England, William III of Orange-Nassau, William II of Scotland, (1650–1702) stadtholder of the Dutch Republic
William of Orange may also refer to:
Middle Ages Saint William of Gellone (755 – c. 812), courtier of Charlemagne who defeated the Saracens at Orange William (Bishop of Orange) (d. 1098), a Bishop who joined the First Crusade
William of Orange in the House of Baux and the House of Chalon-Arlay William I of Baux (c. 1155 – 1219) William II of Baux (died 1239) William III of Baux (died 1256) William VII of Chalon-Arlay (c. 1415 – 1478)
United Provinces of the Netherlands William II, Prince of Orange (1626–1650), stadtholder of the United Provinces of the Netherlands from 1647 William IV, Prince of Orange (1711–1751), first hereditary stadtholder of the Netherlands William V, Prince of Orange (1748–1806), last Stadtholder of the Dutch Republic and leader of the conservative faction
Kingdom of the Netherlands William I of the Netherlands (1772–1843), also known as William Frederik of Orange-Nassau or William VI of Orange before his accession William II of the Netherlands (1792–1849), King of the Netherlands and Grand Duke of Luxembourg William III of the Netherlands (1817–1890), King of the Netherlands and Grand Duke of Luxembourg William, Prince of Orange (1840–1879), eldest son of William III, died before his father Willem-Alexander, King of the Netherlands (b. 1967), King of the Netherlands, eldest child of former Queen Beatrix
Other William of Orange (pigeon), pigeon used by British military in Battle of Arnhem in September 1944
See also Prince of Orange