John Root may refer to:
- John Root (19th c.), Swedish immigrant to Louisiana who killed Eric Jansson (died 1850)
- John Root (19th–20th c.), U.S. baseball player who played in the Missouri Valley League
- John B. Root (born 1958, as Jean Guilloré), French porn director
- John Henry Haines Root (1908–1991), Canadian politician
- John Wellborn Root Sr. (1850–1891), U.S. architect
- John Wellborn Root Jr. (1887–1963), U.S. architect
- William John Root (born 1959), Canadian ice hockey player
- John Arthur Root (1876–1963), Hungarian-born American boxer and first light heavyweight champion; known as Jack Root
See also
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