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{{Wiktionary|As|as}}
'''As''', '''AS''', '''A. S.''', '''A/S''' or similar may refer to:
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==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
* {{lang|sv|[[Akademiska Sångföreningen]]|italic=no}}, an academic male voice choir of Helsinki, Finland
* [[As (newspaper)|''As'' (newspaper)]], a Spanish sports newspaper
* [[As (song)|"As" (song)]], by Stevie Wonder
* ''As'', a 1896 novel by [[Adolf Dygasiński]]
* [[As the Dog]], a sculpture in Warsaw, Poland

== Business legal structures ==
* {{lang|cs|[[Akciová společnost]] (a.s.)|italic=no}}, a Czech form of joint-stock company
* {{lang|sk|[[Akciová spoločnosť]] (a.s.)|italic=no}}, a Slovak form of joint-stock company
* {{lang|da|[[Aktieselskab]]|italic=no}} or ''A/S'', a type of Danish stock-based company
* {{lang|no|[[Aksjeselskap]]|italic=no}} 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
* [[Armée secrète (Belgium)|{{lang|fr|Armée secrète|italic=no|nocat=y}} (Belgium)]], a World War II resistance organization
* [[KK AS Basket]], a Serbian basketball club
* {{lang|fr|[[Armée secrète]]|italic=no}}, 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 Sharp (programming language)|C#]] and [[Rust (programming language)|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, {{frac|1|60}} [[minute of arc|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 ===
* {{lang|cs|[[Aš]]|italic=no}}, a town in the Czech Republic
* {{lang|no|[[Ås, Akershus]]|italic=no}}, Norway
* [[As, Belgium]], in Limburg
* {{lang|no|[[Ås, Sør-Trøndelag]]|italic=no}}, Norway
* {{lang|sv|Ås|italic=no}}, Swedish name for the {{lang|fi|[[Harju, Helsinki|Harju]]|italic=no}} quarter in Helsinki, Finland
* [[As, Ukraine]] (formerly known as Proletarka), a village in Ukraine

===Other places===
* {{lang|fa-Latn|[[As-e Jadid]]|italic=no}} ({{lang|fa|اس جديد}}, "New As"), a village in East Azerbaijan Province, Iran
* {{lang|fa-Latn|[[As-e Qadim]]|italic=no}} ({{lang|fa|اس قديم}}, "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 ==
* {{lang|non|[[Æsir]]|italic=no}} (singular: {{lang|non|ás}}, {{lang|non|áss}}, {{lang|non|ǫ́ss}}), one of the pantheon of Norse gods
* ''{{Transliteration|ar|DIN|ʿAlayhi s-salām}}'' ({{lang|ar|عليه السلام}}), Arabic for "[[Peace be upon him]]", post-nominal posthumous Islamic honorific

== Other uses ==
* [[As (Roman coin)]], a coin and unit of weight
* A.S., {{lang|la|Anno Societatis}}, a calendrical system used in the [[Society for Creative Anachronism#History|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: [[List of auxiliaries of the United States Navy#Submarine tenders (AS)|Submarine tender (AS)]]

== See also ==
* [[Aas (surname)]]
* {{Look from}}
* {{In title}}

{{Disambiguation|geo}}