John Horn may refer to:

  • John A. Horn (born 1968), former United States Attorney
  • John Galbraith Horn (1860–1925), British tennis player
  • John J. Horn (1917–1999), American labor leader and politician from New Jersey
  • John L. Horn (1928–2006), American psychologist
  • John Horn (tennis) (1931–2001), British tennis player
  • John Horn Jr. (1843–1920), awarded a Congressional Gold Medal in 1874 for a career rescuing people from drowning
  • Steve Horn (John Stephen Horn, 1931–2011), American politician from California

See also

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