William, Bill, or Billy Knight may refer to:

Arts and entertainment William Frederick Knight (1933–2022), American voice actor William Henry Knight (1823–1863), British painter Billy Knight (film), 2025 American drama film

Politics 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

Sports William Knight (fighter) (born 1988), American mixed martial arts (MMA) fighter Billy Knight (born 1952), American basketball player and executive in the NBA who went to college at Pittsburgh Billy Knight (basketball, born 1979) (1979–2018), American basketball player who went to college at UCLA William Knight (volleyball) (born 1964), Canadian volleyball player Bill Knight (boxer) (born 1951), British Olympic boxer Billy Knight (tennis) (1935–2026), British tennis player William Knight (footballer), English football goalkeeper for Southampton (1911–1913) Will Knight (rugby union) (born 2007), English rugby union player Bill Knight (baseball), American baseball player

Others 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) (), 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 Will Knight, farmer and owner of Knight's Spider Web Farm

See also

William C. Knights (1917–1973), New York assemblyman William Nye (disambiguation) Bill Nigh (disambiguation)