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 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
Business legal structures , 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
Sports teams and leagues A.S. Roma, an Italian football club Amateurliga Saarland, highest football league in the state of Saarland (defunct) KK AS Basket, a Serbian basketball club Athletics (baseball), an American baseball team referred to as the A's
Transportation companies Alaska Airlines, IATA airline designator Hawaiian Airlines, IATA airline designator that began in 2025 as part of merger with Alaska Airlines Voiturettes Automobiles A.S., a French-based car manufacturer in 1920s Towarzystwo Budowy Samochodów AS, a Poland-based car manufacturer in 1920s and 1930s
Other organizations Academia Sinica, the national academy of Taiwan (Belgium), a World War II resistance organization , a French resistance organization , an academic male voice choir of Helsinki, Finland United List (Apvienotais saraksts), Latvian political party
Vehicles AS Type A2, a sports car manufactured by Voiturettes Automobiles A.S. AS S1 and AS S2, a passenger car manufactured by Towarzystwo Budowy Samochodów AS Submarine tender (AS), a hull classification symbol for a kind of US Navy auxiliary ship
Academia Academia Sinica, the national academy of Taiwan AS-level (disambiguation) Associate of Science, an American academic degree
Language As language, a language of West Papua, Indonesia Assamese language of India (ISO 639-1 code "as") 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 routing prefixes Application server, a computer running back-end software The type conversion operator as, used in C# and Rust
Health and medicine Angelman syndrome, a neuro-genetic disorder Ankylosing spondylitis, a type of spinal arthritis Aortic stenosis, a valvular heart disease Asparagine synthase (glutamine-hydrolysing), an enzyme Asperger syndrome, a psychological diagnosis Auricular splint, a custom-made medical device used as part of ear surgery
Natural sciences
Altostratus, a kind of cloud Arsenic, a chemical element Tropical savanna climate
Units of measurement Arcsecond, of a degree, a unit of angular measurement Attosecond (as), 10−18 second, a subunit of time Attosiemens (aS), 10−18 siemens, a subunit of electric conductance
Other uses in mathematics, science and technology Abramowitz and Stegun, an informal name for the 1964 Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables Aggregate supply, in economics, the total supply of goods Almost surely, 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
Asia (, "New As"), a village in East Azerbaijan Province, Iran (, "Old As"), a village in East Azerbaijan Province, Iran Assam, a state of India
Countries American Samoa (ISO 3166 code AS) Australia (obsolete NATO and FIPS country codes AS) 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 calendar system used by the Society for Creative Anachronism Anti-submarine warfare (A/S) Australian Standards, the technical standards developed by Standards Australia Old name for Ossetians, "As" or "Asi"
See also Aas (surname) Ass (disambiguation)