As, AS, A. S., A/S or similar may refer to:

Art, entertainment, and media

  • A. S. Byatt (born 1936), English critic, novelist, poet and short story writer<!-- https://www.theguardian.com/books/2009/apr/25/as-byatt-interview "Everyone does seem to call her something different. "Antonia", "Dame Antonia", "ASB", "AS"..." -->
  • Adult Swim, a programming block on Cartoon Network
  • , an academic male voice choir of Helsinki, Finland
  • As (newspaper), a Spanish sports newspaper
  • "As" (song), by Stevie Wonder
  • As, a 1896 novel by Adolf Dygasiński
  • As the Dog, a sculpture in Warsaw, Poland
  • , a Czech form of joint-stock company
  • , a Slovak form of joint-stock company
  • or A/S, a type of Danish stock-based company
  • or AS, a type of Norwegian stock-based company

Businesses and organizations

  • A.S. Roma, an Italian football club
  • Alaska Airlines, IATA airline designator
  • Hawaiian Airlines, IATA airline designator that began in 2025 as part of merger with Alaska Airlines
  • (Belgium), a World War II resistance organization
  • KK AS Basket, a Serbian basketball club
  • , a French resistance organization
  • Athletics (baseball), an American baseball team referred to as the A's
  • Voiturettes Automobiles A.S., a French-based car manufacturer in 1920s
  • AS Type A2, a sports car manufactured by Voiturettes Automobiles A.S.
  • Towarzystwo Budowy Samochodów AS, a Poland-based car manufacturer in 1920s and 1930s
  • AS S1 and AS S2, a passenger car manufactured by Towarzystwo Budowy Samochodów AS

Education and research

  • Academia Sinica, the national academy of Taiwan
  • AS-level (disambiguation), any of several uses in education
  • Associate of Science, an American academic degree

Language

  • As language, a language of West Papua, Indonesia
  • as, ISO 639-1 code for the Assamese language of India
  • As (cuneiform), a written character
  • Aš (cuneiform), a written character

Mathematics, science and technology

Computing

  • as (Unix), an assembler program
  • .as, the Internet country code top-level domain for American Samoa
  • ActionScript, for Flash and Flex applications
  • Autonomous system (Internet), a collection of IP networks
  • Application server, a computer running back-end applications
  • the type conversion operator <code>as</code>, used in C# and Rust

Health and medicine

  • Angelman syndrome, a neuro-genetic disorder
  • Ankylosing spondylitis, a type of arthritis
  • Aortic stenosis, a valvular heart disease
  • Asparagine synthase (glutamine-hydrolysing), an enzyme
  • Asperger syndrome, an autism spectrum disorder
  • Auricular splint, a custom-made medical device used as part of ear surgery

Natural sciences

  • As (beetle), a genus in family Cerylonidae
  • Altostratus, a cloud that is sometimes abbreviated as As
  • Arsenic, symbol As, a chemical element
  • Tropical savanna climate, labelled As or Aw

Units of measurement

  • Arcsecond, arcminute, a unit of angular measurement
  • Attosecond or as, 10<sup>−18</sup> second, a subunit of time
  • Attosiemens or aS, 10<sup>−18</sup> siemens, a subunit of electric conductance

Other uses in mathematics, science and technology

  • Abramowitz and Stegun, a mathematical reference work
  • Aggregate supply, in economics, the total supply of goods
  • Almost surely or a.s., in probability theory

Places

Europe

  • , a town in the Czech Republic
  • , Norway
  • As, Belgium, in Limburg
  • , Norway
  • , Swedish name for the quarter in Helsinki, Finland
  • As, Ukraine (formerly known as Proletarka), a village in Ukraine

Other places

  • (, "New As"), a village in East Azerbaijan Province, Iran
  • (, "Old As"), a village in East Azerbaijan Province, Iran
  • American Samoa (ISO 3166 code AS)
  • .as, the Internet country code top-level domain for American Samoa
  • Australia (obsolete NATO and FIPS country codes AS)
  • Assam, a state of India
  • United States (abbreviated "AS" in Indonesian)

Religion

  • (singular: , , ), one of the pantheon of Norse gods
  • ' (), Arabic for "Peace be upon him", post-nominal posthumous Islamic honorific

Other uses

  • As (Roman coin), a coin and unit of weight
  • A.S., , a calendrical system used in the Society for Creative Anachronism
  • Anti-submarine warfare, A/S
  • Amateurliga Saarland, highest football league in the state of Saarland (defunct)
  • Australian Standards, the technical standards developed by Standards Australia
  • Old name for Ossetians, "As" or "Asi"
  • A US Navy hull classification symbol: Submarine tender (AS)

See also

  • Aas (surname)