William Devlin

• William Devlin (actor), Scottish actor
• William Devlin (footballer, born 1893), English footballer
• William Devlin (footballer, born 1899), Scottish footballer
• William Devlin (footballer, born 1931), Scottish footballer
• William J. Devlin, American Jesuit and academic administrator
• Bill Devlin, American politician
• Billy Devlin, swimmer from Northern Ireland