John Dillon (1851–1927) was an Irish nationalist politician. John Dillon may also refer to: * John Dillon (baseball), 19th-century baseball player * John Dillon (comedian) (1831–1913), American comedian based in Chicago * John Dillon, one-half of the Dillon Brothers vaudeville group in late 1800s * John Dillon, original member of southern rock band the Ozark Mountain Daredevils * John A. Dillon (1923–2005), American physicist, administrator and professor at the University of Louisville * John Francis Dillon (commissioner) (1866–1927), one of the first members of the Federal Radio Commission in the United States * John Francis Dillon (director) (1884–1934), American film director * John Forrest Dillon (1831–1914), American jurist from Iowa * Hook Dillon (John Dillon, 1924–2004), Am