William of Orange
William of Orange usually refers to either:
- William the Silent, William I,, 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, stadtholder of the Dutch Republic
Middle Ages
- Saint William of Gellone, courtier of Charlemagne who defeated the Saracens at Orange
- William (Bishop of Orange), a Bishop who joined the First Crusade
William of Orange in the House of Baux and the House of Chalon-Arlay
United Provinces of the Netherlands
- William II, Prince of Orange, stadtholder of the United Provinces of the Netherlands from 1647
- William IV, Prince of Orange, first hereditary stadtholder of the Netherlands
- William V, Prince of Orange, last Stadtholder of the Dutch Republic and leader of the conservative faction
Kingdom of the Netherlands
- William I of the Netherlands, also known as William Frederik of Orange-Nassau or William VI of Orange before his accession
- William II of the Netherlands, King of the Netherlands and Grand Duke of Luxembourg
- William III of the Netherlands, King of the Netherlands and Grand Duke of Luxembourg
- William, Prince of Orange, eldest son of William III, died before his father
- Willem-Alexander, King of the Netherlands, 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