William Lyon

• William Lyon , American film editor
• William John Lyon, New Zealand politician
• William Lyon , English bishop
• William Lyon , Anglican Archdeacon of Loughborough
• William Durie Lyon, Ontario businessman and politician
• William C. Lyon, American politician
• William P. Lyon, Wisconsin jurist and soldier
• William Radenhurst Richmond Lyon, first reeve of Richmond, Ontario
• Bill Lyon, Australian rules footballer
• Billy Lyon, American football player
• William Lyon , USAF general