John Crook may refer to:
John Crook (ethologist) (1930–2011), British ethologist and Buddhist John Crook (conductor) (1847–1922), English conductor and composer John Crook (politician) (1895–1970), Australian politician John Crook (bishop) (born 1940), Bishop of Moray, Ross and Caithness, 1999–2006 John Crook (classicist) (1921–2007)
See also John Crooke (disambiguation) John Crooks (disambiguation)