Hoorn is a city in North Holland, the Netherlands.
Hoorn may also refer to:
Places Hoorn, Heerde, Gelderland, Netherlands Hoorn, Friesland, Netherlands County of Horne, or Hoorn, a county of the Holy Roman Empire in present-day Netherlands and Belgium Hoorn Islands, South Pacific islands named after the city of Hoorn
People with the surname Jordanus Hoorn (1753–1833), Dutch painter Carol Hoorn Fraser (1930–1991), American figurative artist active in Canada
See also Horn (disambiguation) Den Hoorn (disambiguation) Van Hoorn, a surname