William Knight

William, Bill, or Billy Knight may refer to:

Arts and entertainment

William Knight (died 1622), Member of Parliament (MP) for Hythe
Bill Knight (born 1947), former Canadian Member of Parliament and financial executive
William J. Knight (1929–2004), X-15 pilot and U.S. politician
William M. Knight (1837–1910), American politician and merchant from Maryland
William W. Knight (politician) (1913–1987), Pennsylvania politician
William Knight (Wisconsin politician) (1843–1941), Wisconsin legislator and orchardman
William Grills Knight (1839–1903), mayor of Albany, Western Australia

William Knight (fighter) (born 1988), American mixed martial arts (MMA) fighter
Billy Knight (basketball, born 1979) (1979–2018), American basketball player who went to college at UCLA
William Knight (volleyball) (born 1964), Canadian volleyball player
Billy Knight (born 1952), American basketball player and executive in the NBA who went to college at Pittsburgh
Bill Knight (boxer) (born 1951), British Olympic boxer
Billy Knight (tennis) (born 1935), British tennis player
William Knight (footballer), English football goalkeeper for Southampton (1911–1913)

Billy Knight (criminal) (1943–1978), Canadian criminal
William Angus Knight (1836–1916), British writer, professor, and philosopher
William Bruce Knight (1786–1845), Dean of Llandaff
William Knight (architect) (1840–1923), architect in Nottingham
William Knight (pirate) (fl. 1684–1689), English buccaneer
William Knight (martyr) (1572–1596), martyred in 1596
William Knight (bishop) (1475–1547), member of the court of Henry VIII, and Bishop of Bath and Wells
William W. Knight (publisher) (1909–1981), lawyer, state legislator, publisher of The Oregon Journal
William James Knight (1837–1916), American soldier and Medal of Honor recipient