William

William may refer to:

Royalty

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

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)

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

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

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

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

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