John Warren
John Warren is the name of:
- John Warren (musician ) ( born 1938 ), Canadian composer and jazz musician
- John Warren ( footballer ) ( 1943-2004 ), Australian football player
- John Warren ( screenwriter ) ( born 1953 ), American screenwriter, director and producer
- John Collins Warren (1778-1856), American surgeon
- John Robin Warren ( born 1937 ), Australian pathologist
- Disambiguation