Hoorn may refer to: One of several towns in the Netherlands: Hoorn, a city and municipality in North Holland. Hoorn, South Holland, in the municipality of Alphen aan den Rijn Hoorn, Groningen, in the municipality of Bellingwedde Hoorn, Gelderland, in the municipality of Heerde Hoorn, Friesland or Hoarne, in the municipality island of Terschelling County of Horne, sometimes spelled Hoorn, a former state of the Holy Roman Empire centred on the town of Horn, Netherlands Hoorn Islands, South Pacific islands named after the city of Hoorn People with the surname Jordanus Hoorn (1753–1833), Dutch painter Carol Hoorn ((1930–1991), American figurative artist active in Canada See also Horn (disambiguation) Den Hoorn (disambiguation) Van Hoorn (surname) Dutch-language surnames