King William may refer to:
People
Bimbia
- William I of Bimbia (1800–1877)
- William II of Bimbia ()
British Isles
- William of England (disambiguation), including a list of kings with the name
- William the Lion ( – 1214; ), King of Scots
Germany
- William II of Holland (1227–1256; ), King of the Romans
- William I of Württemberg (1781–1864; )
- William II of Württemberg (1848–1921; )
Netherlands
- King Willem (disambiguation), including a list of kings alternatively named William
Sicily
- William I of Sicily (1120 or 1121 – 1166; )
- William II of Sicily (1153–1189; )
- William III of Sicily ( – ; )
Places
- King William, Virginia, United States
See also
- King William Ale House, Bristol, England, United Kingdom
- King William Street (disambiguation)
- King William's March, a composition by Jeremiah Clarke
- Prince William (disambiguation)
- Wilhelm I (1797–1888), German Emperor () and King of Prussia ()
- Wilhelm II (1859–1941; ), German Emperor and King of Prussia
- Wilhelmina, Queen of the Netherlands (1880–1962; )
- Wilhelmine of Prussia, Queen of the Netherlands (1774–1837), consort of William I, King of the Netherlands
- William, Grand Duke of Luxembourg (disambiguation)
- William I (disambiguation)
- William II (disambiguation)
- William III (disambiguation)
- William King (disambiguation)