William Lunn

• William Lunn (politician), English Labour Party politician
• William Lunn (educator), Canadian educator, businessman, and politician
• William Lunn (rugby union), New Zealand rugby union player
• William Lunn (freestyle skier) in FIS Freestyle World Ski Championships 2011 – Men's ski cross
• William Lunn (priest), Archdeacon of Huntingdon and Wisbech