Arn

Arn may refer to:

Given name

 * Arn Anderson (born 1958), American professional wrestler
 * Arn Menconi (born 1959), District 2 Commissioner in Eagle County, Colorado
 * Arn Saba (born 1947), Canadian cartoonist, writer, media personality, stage performer and composer
 * Arn of Salzburg (c. 750–821), Bishop of Salzburg and afterwards its first archbishop
 * Arn Tellem (born 1954), American sports executive and player agent
 * Arn von Endsee (died 892), Bishop of Würzburg from 855 until his death in 892

Surname

 * Edward F. Arn (1906–1998), governor of the U.S. state of Kansas
 * Gréta Arn (born 1979), Hungarian professional tennis player

Fictional characters

 * Arn, the protagonist's friend in Hal Foster's Prince Valiant comic strip, and Valiant's first son, named after the friend
 * Arn Magnusson, the fictional main character in the Crusades trilogy (1998-2000) by Swedish author Jan Guillou, as well as the film adaptation Arn: The Knight Templar (2007) based on the first two books of the trilogy

Others

 * Arn., taxonomic author abbreviation of George Arnott Walker-Arnott (1799–1868), Scottish botanist
 * Arn, an alien species in the Animorphs series by K. A. Applegate, featured in the books The Hork-Bajir Chronicles (1998) and The Prophecy (1999)

Abbreviation

 * arn, the ISO 639-2 code for the Mapudungun language, a language isolate spoken in central Chile and west central Argentina
 * George Arnott Walker-Arnott, a Scottish botanist, known by the author abbreviation "Arn."

ARN
ARN may refer to:
 * Stockholm Arlanda Airport, an international airport located in Sigtuna Municipality, Sweden (IATA airport code)
 * ARN (railway station), a railway station that serves the village of Arnside in Cumbria, England
 * Alberta RailNet
 * Aircraft registration number
 * Arkansas Radio Network, a defunct United States regional radio network
 * ARN Media, Australian media company
 * ARN (Australian radio), formerly known as Australian Radio Network, a free-to-air commercial radio network
 * Access Research Network
 * ARNnet, IDG Australian brand
 * Allmänna reklamationsnämnden
 * Accelerated Return Note (ARN)
 * Amazon Resource Name, a term used in Amazon Web Services
 * Acute retinal necrosis