Jack Kirby (1917–1994) was an American comic book writer.
Jack Kirby may also refer to:
Jack Kirby (Australian footballer) (1889–1939), Australian rules footballer Jack Kirby (English footballer) (1910–1960), English football goalkeeper Jack Kirby (American football) (1923–2007), American football player Jack T. Kirby (1938–2009), American historian who wrote about the Southern United States
See also John Kirby (disambiguation) Jack Kilby (1923–2005), electrical engineer