AN

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

Arts 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
Ân (album), an album by Edis

Airlinair, a French regional airline, by IATA airline code
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 defunct Australian airline group by IATA code
Apalachicola Northern Railroad, a short-line railroad which operated in the Florida Panhandle of the United States (reporting mark AN) 1903–2002
- AN Railway, a successor company, 2002–present^[update]
Aryan Nations, a North American neo-Nazi and Christian Identity organization
Australian National, a government-owned Australian rail operator from 1975 until 1987 (a rebranding of the Australian National Railways Commission)
Antonov, a Ukrainian (formerly Soviet) aircraft manufacturing and services company, as a model prefix

A_n, in mathematics, a root system and its Dynkin diagram
A_n, in mathematics, conventional notation for the alternating group
a_n, 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

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

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)

Associate degree in nursing
Algebraic notation (chess) (AN^{[citation needed]}), the standard system for recording moves in chess