William

William may refer to:


 * William (name), a masculine given name

British

 * William I of England (1027–1087), aka William the Conqueror, or William the Bastard
 * William II of England (1056–1100), aka William Rufus
 * William I of Scotland (c. 1142–1214), aka William the Lion
 * William IX, Count of Poitiers (1153–1156), first son of Henry II of England
 * William III of England (1650–1702), also William II of Scotland, aka William of Orange
 * William IV of the United Kingdom (1765–1837)
 * Prince William, Duke of Cambridge, formerly Prince William of Wales (b. 1982), son of Charles, Prince of Wales

French

 * William of Gellone (c.755–814), Count of Toulouse, canonized a saint
 * William II, Prince of Orange (1626–1650)
 * William IV, Prince of Orange (1711–1751)
 * William V, Prince of Orange (1748–1806)

Württemberg

 * William I of Württemberg (1791–1864)
 * William II of Württemberg (1848–1918)

The Netherlands

 * William I, Count of Holland (1167–1222)
 * William II of Holland (1228–1256), also King of Germany
 * William I, Prince of Orange (1533–1584), a.k.a. William the Silent
 * William I of the Netherlands (1772–1843)
 * William II of the Netherlands (1792–1849)
 * William III of the Netherlands (1817–1890)

Sicily

 * William I of Sicily (1131–1166), a.k.a. William the Bad or William the Wicked
 * William II of Sicily (1155–1189), a.k.a. William the Good
 * William III of Sicily (1190–1198)

Cameroon

 * William I of Bimbia, 19th-century king of the Isubu people
 * William II of Bimbia (d. 1882), king of the Isubu people

Other royalty

 * William II of Villehardouin (d. 1278), Prince of Achaea
 * William of Werle (before 1393/94-1436), Lord of Werle-Güstrow
 * William IV, Grand Duke of Luxembourg (1852–1912)
 * William, Prince of Albania (1876–1945)

British

 * William de Corbeil (c. 1070–1136), Archbishop of Canterbury
 * William of Malmesbury (c. 1080-c. 1143), English historian and monk
 * William of Tyre (c. 1130–1185), Archbishop of Tyre, chronicler of the Crusades
 * William of Norwich (c. 1132–1144), saint and martyr
 * William of York (died 1154), Archbishop of York and saint
 * William (bishop of Moray) (died 1162), Roman Catholic bishop in Scotland
 * William of Ramsey (fl. 1219), 13th-century monk and hagiographer
 * William (bishop of Dunblane) (died early 1290s), Tironensian abbot and bishop in the Kingdom of Scotland
 * William of Ockham (c. 1288-c.1348), English friar and philosopher, originator of Occam's Razor
 * William of Wykeham (1320–1404), Bishop of Winchester, founder of Winchester College and New College, Oxford
 * William (bishop of the Isles) (died. c. 1095), bishop of what later became the Diocese of the Isles

French

 * William I, Duke of Normandy (r. 927–942), second Duke of Normandy
 * William of Poitiers (c. 1020–1090), Norman chronicler, chaplain to William the Conqueror
 * William de St-Calais (d. 1096), a.k.a. William of St. Carilef, Norman abbot, Bishop of Durham
 * William (bishop of Orange) (d. 1098), took part in the First Crusade
 * William of Champeaux (1070–1121), French philosopher and theologian
 * William of Conches (c. 1090-c. 1154), French scholastic philosopher, tutor of Henry II of England
 * William of Donjeon (c. 1155–1209), a.k.a. St. William of Bourges and St. William the Confessor, French archbishop
 * William the Clerk 13th century Scoto-Norman poet, writer of the Old French Roman de Fergus
 * William the Clerk of Normandy, 13th century Norman cleric and Old French poet
 * William of Auxerre (d. 1231), French theologian

Others

 * William (marcha orientalis), 9th century margrave of the March of Pannonia, part of the Carolingian Empire
 * William (Archbishop of Mainz) (929–968), German bishop, son of Emperor Otto the Great
 * William of St-Thierry (c. 1085–1148), theologian and mystic, abbot of St. Thierry
 * William of Moerbeke (1215–1286), Flemish bishop, translator of philosophical, medical, and scientific texts

Other contemporary people

 * will.i.am, American musician, member of the Black Eyed Peas
 * William (Vilavancode MLA), Indian politician

Fictional characters

 * William Brown (fictional boy), main character of the Just William novel series
 * Baby William, son of Dana Scully and Fox Mulder in the American television series, The X-Files

Other uses

 * William (1770 ship), merchantman and convict ship
 * "William" (song), from the album The Others by English indie rock band The Others
 * William (TV series), BBC television series of 1962 to 1963, based on Just William books
 * William, United States Virgin Islands, settlement on the island of Saint Croix
 * William, West Virginia, unincorporated community in Tucker County, West Virginia
 * "William" (Haven), an episode of the TV series Haven