King William may refer to:
- William I of Bimbia
- William II of Bimbia, popularly known as Young King William
- William I of England
- William II of England
- King William III of England and Ireland, and William II of Scotland
- William IV of the United Kingdom
- King William County, Virginia
- William I, German Emperor
- William II, German Emperor
- William I of Scotland
- William I of Sicily
- William II of Sicily
- William III of Sicily
- William I of the Netherlands
- William II of the Netherlands
- William III of the Netherlands
Famous quotes containing the word king:
“An illiterate king is a crowned ass.”
—Medieval English proverb.
Said by the chronicler William of Malmesbury to have been much used by King Henry I of England (1068-1135)