John Cowley

John Cowley may refer to:
 * John Cowley (actor) (1923–1998), Irish actor
 * John Cowley (British Army officer) (1905–1993), British Army general
 * John Cowley (cricketer) (1885–1957), English cricketer
 * John Cowley (entomologist) (1909–1967), English entomologist
 * John Cowley (racing driver), racing driver who competed at the Bathurst 12 Hour
 * John Duncan Cowley (1897–1944), librarian and author
 * John Lodge Cowley (1719–1787), English cartographer, geologist and mathematician
 * John M. Cowley (1923–2004), professor at Arizona State University