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), British librarian and author John Lodge Cowley (1719–1787), English cartographer, geologist and mathematician John M. Cowley (1923–2004), professor at Arizona State University
See also Jack Cowley (1877–1926), English footballer