John Root may refer to:John Root, Swedish immigrant to Louisiana who killed Eric Jansson John Root, American baseball player who played in the Missouri Valley League John B. Root, French porn director John Henry Haines Root (1908–1991), Canadian politician John Wellborn Root (1850–1891), American architect John Wellborn Root Jr. (1887–1963), his son, American architect Jack Root, Hungarian-born American boxer and first light heavyweight champion John Root (politician) (1937–2025), American politician