may refer to:
In music and sound
- Horn (instrument), sometimes called a "French horn," a brass musical instrument constructed of coiled tubing
- Horn section of a band or orchestra
- Blowing horn, winding horn or age-old rudimentary sound device
- Horn (acoustic), an open-ended tapered sound-guide
- horn speaker, a loudspeaker
- Bullhorn, or Megaphone, a device used to amplify one's voice
- Bukkehorn, ancient Norwegian musical instrument
- Train horn, for use on diesel and electric locomotives, as opposed to a steam whistle.
- Foghorn, navigation aid for mariners
- Car horn, or Klaxon, also used on trains and ships
- A Shofar. A ritual horn in the Jewish religion.
- A Dungchen. A ritual horn used in Tibetan Buddhism.
- Horn of Africa, Somalia, Ethiopia, Eritrea and Djibouti
- Cape Horn, the southernmost point of South America
- Horn, Austria
- Horn (district) in Austria
- Horn (Netherlands), a village in the municipality of Haelen
- Horn, Rutland, a small civil parish in England
- Horn, Switzerland
- Glacial horn, a sharp pyramidal peak on a mountain, created by glacial erosion
- Horn, Germany, a municipality in the district of Rhein-Hunsrück in Rhineland-Palatinate, Germany.
- Horn, Sweden
In fiction and mythology
- Gjallarhorn, the sounding horn or ringing horn of the god Heimdall, used to announce Ragnarok
- King Horn, a 13th century Middle English romance story.
- Horn of Gondor carried by Boromir in the Lord Of The Rings
- Horn (Chinese constellation), a constellation in Chinese astronomy, known as one of the Eastern mansions of the Azure Dragon
- Hörn, another name for the goddess Freyja in Norse mythology.
In slang usage
- Hook 'em Horns is a hand gesture expressing support for the above teams
- "Horn" is military jargon for a telephone, as in "Get on the horn"
- "Horns" is a shortened version of Texas Longhorns, the sports teams of the University of Texas in Austin
- "Devil horns" is a hand gesture, the Corna, with a vulgar meaning in Mediterranean countries, also used in heavy metal
- "Horned" and variants can mean cuckolded.
- Horn, a baseball Hat-trick, when a player strikes out six times in one game.
In other uses
- Hoorn, city in the Netherlands
- Horne, disambiguation page
- Horny, disambiguation page
- Corne, French word for horn