William the Younger

• William Alexander (the younger)
• William Cawley (younger)
• William Faithorne the Younger
• William Godwin the Younger
• William Heberden the Younger
• William Holl the Younger
• William IV, Duke of Brunswick-Lüneburg
• William Morgan (of Tredegar, younger)
• William Peverel the Younger
• William Pitt the Younger
• William Urwick the younger
• William of Jülich
• William the Younger, Duke of Brunswick-Lüneburg