John Hearn or Hearne may refer to: John Hearn (politician) (1827–1894), Irish-born Canadian merchant and politician John Gabriel Hearn (1863–1927), Canadian businessman and political figure John Graham Hearn (1929–1980), British speed skater J. T. Hearne (1867–1944), British cricket bowler J. W. Hearne (1891–1965), British cricket all-rounder John Hearne (lawyer) (1893–1969), Irish legal scholar and diplomat John Hearne (writer) (1926–1994), Canadian-born Jamaican writer and educator John Hearne (composer) (born 1937), Scottish composer, conductor and singer Jack Hearn (born 1923), born John Hearn, British judo instructor