An is the indefinite article in English; see a and an.An, AN, aN, or an may also refer to:

Culture and language

• An
• An alternative romanisation for Ahn
• An , a god in Sumerian mythology
• An , a goddess in Sumerian mythology
• AN Algemeen Nederlands (meaning "Common Dutch"), the official Dutch language, common to most people in the Netherlands and the Flemish community in Belgium
• Aragonese language's ISO 639-1:2002 language code
• Anguttara Nikaya, one of the five oldest books in Buddhist literature
• An , a small table or platform used during Shinto ceremonies

Mathematics and science

• aN, the attonewton, an SI unit of force
• An, a Dynkin diagram
• AN, ammonium nitrate
• Anorexia Nervosa, an eating disorder
• acetonitrile

Organisations

• AN , a Finnish black metal band
• Alleanza Nazionale, the Italian name for the National Alliance , a political party in Italy
• Anime North, a Canadian anime convention
• Ansett Australia's now defunct IATA airline designator
• Apalachicola Northern Railroad's Association of American Railroads reporting mark
• Avisa Nordland, a Norwegian newspaper
• The design office prefix for Antonov, a Ukrainian (formerly Soviet) aircraft manufacturing and services company
• Astronomische Nachrichten, or Astronomical Notes, an international Astronomy journal

Placename abbreviations or codes

• Anderson County, Kansas state county code
• Andorra's obsolete NATO country code
• Angola's World Meteorological Organization country code
• Application Note Application Note (in engineering) most often seen as A.N.
• Netherlands Antilles' ISO country code

Other

• AN thread, a type of fitting
• a prefix used by by the U.S. military for electronic equipment named under the Joint Electronics Type Designation System
• the romanization of the Japanese word ?, meaning red bean paste

ANAnANANANAnANANAnAn AN ANAnAnAN??

Source: http://en.wikipedia.org/wiki/AN