William Moore
William Moore is the name of:
- William Moore, an Irish terrorist/serial killer and Shankill Butcher
- William Moore (politician), an Irish politician and judge
- William Moore (actor), a TV actor
- William Moore (British mathematician)
- William Moore (pirate), murdered by Captain Kidd
- William Moore (Alaskan), earlier settler of Skagway, Alaska
- William Harrison Moore, Australian legal writer and professor of law, university of Melbourne
- William Moore (critic), Australian art and dramatic critic