AN

An, AN, aN, or an may refer to:

Businesses and organizations

 * Airlinair (IATA airline code AN)
 * Alleanza Nazionale, a former political party in Italy
 * AnimeNEXT, an annual anime convention located in New Jersey
 * Anime North, a Canadian anime convention
 * Ansett Australia, a major Australian airline group that is now defunct (IATA designator AN)
 * Apalachicola Northern Railroad (reporting mark AN) 1903–2002
 * AN Railway, a successor company, 2002–
 * Aryan Nations, a white supremacist religious organization
 * Australian National Railways Commission, an Australian rail operator from 1975 until 1987
 * Antonov, a Ukrainian (formerly Soviet) aircraft manufacturing and services company, as a model prefix

Entertainment and media

 * Antv, an Indonesian television network
 * Astronomische Nachrichten, or Astronomical Notes, an international astronomy journal
 * Avisa Nordland, a Norwegian newspaper
 * Sweet Bean (あん), a 2015 Japanese film also known as An

Language

 * An, English indefinite article
 * Anglo-Norman language
 * Aragonese language (ISO 639-1:2002 language code AN)
 * Algemeen Nederlands (meaning "Common Dutch"), the official Dutch language
 * A variant of the prefix "in", used before vowels to convey the meaning "not" (for example: aneuploid means "not euploid")

Mathematics, science, and technology

 * An, in mathematics, a root system and its Dynkin diagram
 * An, in mathematics, conventional notation for the alternating group
 * an, a generic label for a term of a sequence
 * AN thread, Army and Navy thread - for bolts and tube fittings in 16th inch increments
 * Acanthosis nigricans, a skin condition
 * Acrylonitrile, an organic compound and monomer used in the manufacture of certain plastics
 * Actinide (An), informal symbol for a series of chemical elements
 * Ammonium nitrate (AN), a chemical compound
 * Anode, in electronic schematics
 * Anorexia nervosa, an eating disorder
 * Application note (in engineering), most often seen as A.N.
 * Attonewton (aN), an SI unit of force
 * Anorthite, a feldspar mineral
 * Adobe Animate, an Adobe animation software

Military

 * A prefix used by the U.S. military for electronic equipment named under the Joint Electronics Type Designation System
 * A US Navy hull classification symbol: Net laying ship (AN)
 * Avtomat Nikonova used for the AN-94

Names

 * Ahn (Korean name) (安)
 * An (surname) (安), Chinese surname

Places

 * An County, in Sichuan, China
 * Agios Nikolaos (disambiguation), a common place name in Greece and Cyprus
 * Province of Ancona, a province of Italy (ISO 3166-2:IT code AN)
 * Andaman and Nicobar Islands, a territory in southeastern India (ISO 3166 code AN)
 * Anderson County, Kansas (state county code AN)
 * Andorra (FIPS, LOC MARC and obsolete NATO country code AN)
 * Angola (World Meteorological Organization country code AN)
 * Netherlands Antilles (ISO country code AN)

Religion

 * An (Shintō), a small table or platform used during Shinto ceremonies
 * Anu or An, a god in Sumerian and Babylonian mythology

Other uses

 * Associate degree in nursing
 * Algebraic notation (chess) (AN), the standard system for recording moves in chess