John Warren
John Warren is the name of the following people:
- John Warren (Medic) (1753–1815) British-American anatomist and surgeon
- John Warren, 3rd Baron of Tabley ( John Byrne Leicester de Tabley Warren ; 1835–1895), British poet, numismatist and botanist
- John Warren (screenwriter, 1916) (1916–1977), British screenwriter and actor
- John Warren (musician) (* 1938), Canadian composer and jazz musician
- John Warren (soccer player) (1943-2004), Australian soccer player
- John Warren (screenwriter, 1953) (born 1953), American screenwriter, director and producer
- John Collins Warren (1778-1856), American surgeon
- John F. Warren (1909-2000), American cinematographer
- John Robin Warren (born 1937), Australian pathologist