John Cowley

• John Cowley (actor), Irish actor
• John Cowley (British Army officer), British Army general
• John Cowley (cricketer), English cricketer
• John Cowley (entomologist), English entomologist
• John Cowley (racing driver), racing driver who competed at the Bathurst 12 Hour
• John Duncan Cowley, librarian and author
• John Lodge Cowley, English cartographer, geologist and mathematician
• John M. Cowley, professor at Arizona State University