Keith Arnold

Keith Arnold may refer to:
 * Keith Arnold (bishop) (1926–2021), first bishop of Warwick (1980–1990)
 * Keith Arnold (cricketer) (born 1960), English cricketer
 * Keith Arnold (rugby union) (1920–2006), New Zealand rugby union player
 * J. Keith Arnold (born 1959), Florida politician
 * Keith Arnold, candidate in the United States House of Representatives elections in Washington, 2010