Bill Gannon
Bill or William Gannon may refer to:
- William F. Gannon, American Catholic priest and Jesuit
- Bill Gannon , American baseball player
- Bill Gannon , Irish Gaelic footballer
- Bill Gannon , member of the Irish Republican Army
- A fictional character on the American television series Dragnet, played by Harry Morgan
- William J. Gannon, American politician in the state of Iowa
- Bill Gannon , New Hampshire politician