William Chapman
William, Bill, or Billy Chapman may refer to:
Arts and entertainment
- William Chapman (poet), Canadian poet
- William Chapman (baritone), American opera singer and actor
- Billy Chapman (character), a fictional character in the Silent Night, Deadly Night franchise.
Law and politics
- William Chapman (MP for Arundel), English politician, MP for Arundel
- William Chapman (MP for Bath), English politician, MP for Bath
- William W. Chapman, American politician and lawyer
- Bill Chapman (politician), Australian politician in New South Wales
Sports
- William Chapman (cricketer), English professional cricketer
- Bill Chapman (footballer), New Zealand footballer
- Billy Chapman (footballer), English footballer
Others
- William Chapman (engineer), English engineer
- William Chapman (doctor), British-born doctor in New Zealand
- William E. Chapman, American diplomat
- William Chapman (journalist), American journalist