William Riley

• Bill Riley (ice hockey, born 1921)
• Bill Riley (ice hockey, born 1950)
• Bill Riley Jr.
• Bill Riley Sr.
• Billy Lee Riley
• Billy Riley
• Billy Riley (baseball)
• John Creasey
• Riley (surname)
• William Bell Riley
• William E. Riley
• William Edward Riley
• William F. Riley
• William Harrison Riley
• William J. Riley
• William O'Reilly (disambiguation)
• William Riley (Leicestershire cricketer)
• William Riley (Nottinghamshire cricketer)
• William Riley (criminal)
• Willie Riley