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–present
• 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

• 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

Military

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

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 (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