William Knight
William, Bill, or Billy Knight may refer to:
Arts and entertainment
Politics
- William Knight (died 1622), member of parliament for Hythe
- Bill Knight, former Canadian member of parliament and financial executive
- William J. Knight, X-15 pilot and U.S. politician
- William M. Knight, American politician and merchant from Maryland
- William W. Knight (politician), Pennsylvania politician
- William Knight (Wisconsin politician), Wisconsin legislator and orchardman
- William Grills Knight, mayor of Albany, Western Australia
Sports
- William Knight (fighter), American mixed martial arts fighter
- Billy Knight (basketball, born 1979), American basketball player who went to college at UCLA
- William Knight (volleyball), Canadian volleyball player
- Billy Knight, American basketball player and executive in the NBA who went to college at Pittsburgh
- Bill Knight (boxer), British Olympic boxer
- Billy Knight (tennis), British tennis player
- William Knight (footballer), English football goalkeeper for Southampton
- Will Knight (rugby union), English rugby union player
Others
- Billy Knight (criminal), Canadian criminal
- William Angus Knight, British writer, professor, and philosopher
- William Bruce Knight, Dean of Llandaff
- William Knight (architect), architect in Nottingham
- William Knight (pirate), English buccaneer
- William Knight (martyr), martyred in 1596
- William Knight (bishop), member of the court of Henry VIII, and Bishop of Bath and Wells
- William W. Knight (publisher), lawyer, state legislator, publisher of The Oregon Journal
- William James Knight, American soldier and Medal of Honor recipient
- Will Knight, farmer and owner of Knight's Spider Web Farm