John Barron may refer to:
- John Barron (actor) (1920–2004), English actor, best known for The Fall and Rise of Reginald Perrin
- John Barron (journalist) (1930–2005), American journalist who exposed Communist activities
- John Barron (hurler) (1934–2008), Irish sportsman
- John Augustus Barron (1850–1936), Canadian politician and lawyer
- John Barron, publisher and former editor of the Chicago Sun-Times
- John Barron, plaintiff in the Supreme Court case Barron v. Baltimore