John Hartigan
John Hartigan may refer to:
People
- John A. Hartigan, Australian-American statistician
- John Patrick Hartigan, American jurist
- John Hartigan, American captain of 1911 [Boston College football team]
- John Hartigan (rowing), American coxswain
- John Hartigan (media executive) , Australian journalist
- John C. Hartigan, American Emmy nominee in 2014 Primetime [Emmy Award for Outstanding Special Visual Effects]
- John Hartigan, Australian director of Land Registry, subordinate in 2001 to Elizabeth O'Keeffe
- John Hartigan, English Labour Party candidate in Shipston ward of 2017 [Warwickshire County Council election]
Characters
- John Hartigan (Sin City), major protagonist in 1990s American graphic novels by Frank Miller