John Warren
John Warren may refer to:
Entertainment
- John F. Warren, American cinematographer
- John Warren (actor), British screenwriter and actor
- John Warren (musician), Canadian baritone saxophonist and composer
Medicine
- John Warren (surgeon, born 1753), American surgeon during the Revolutionary War, founder of Harvard Medical School
- John Collins Warren (surgeon, born 1778), American surgeon, founder of the New England Journal of Medicine, son of the above
- John Collins Warren (surgeon, born 1842), American surgeon, son of Jonathan Mason Warren
- John Warren (anatomist, born 1874), American professor of anatomy at Harvard University, son of the above
- Robin Warren, Australian pathologist
Military
- Sir John Borlase Warren, British admiral, politician, and diplomat
- * Sir John Borlase Warren (1800 ship), British merchant vessel named after the admiral
- Jean Baptiste François Joseph de Warren, known as John Warren, Italian-born British Army officer and surveyor and astronomer with the East India Company
- John Warren (British Army soldier), soldier, official and merchant in Upper Canada
- John E. Warren Jr., U.S. Army officer and Vietnam War Medal of Honor recipient
Politics
- John Warren (Dover MP), English member of Parliament for Dover
- John Warren (Upper Canada politician), merchant and politician in Upper Canada
- John Henry Warren, English-born merchant and politician in Newfoundland
- John Holden Warren, Wisconsin state senator
- John Warren (Australian politician), Australian pastoralist and politician
- John E. Warren, Mayor of Saint Paul, Minnesota, from 1863 to 1864
- John Warren (trade unionist), British trade unionist
Religion
- John Warren (bishop), Archdeacon of Worcester, Bishop of Saint David's, Wales, Bishop of Bangor, Wales
- John Warren (priest), Dean of Bangor
Science and engineering
- John Warren (mathematician), English mathematician and Fellow of the Royal Society
- John Warren (mining engineer), English-born mining engineer and mine manager in Australia
Sports
- John Warren (South African cricketer), South African cricketer
- John A. Warren, American football and basketball coach at the University of Oregon
- John Warren (Indian cricketer), Indian cricketer who played for Bengal
- John Warren (basketball, born 1947), American basketball player
- Johnny Warren, Australian soccer player and coach
- John Warren (punter), American football player
- John Warren, racing manager of Queen Elizabeth's horses
Others
- John Warren (convict), British convict transported to Western Australia
- John Warren, 3rd Baron de Tabley, English poet, numismatist, botanist and authority on bookplates
- John Warren (journalist), Canadian journalist who anchored the CBC Parliamentary Television Network