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{{Wiktionary|AST|Ast|ast}}
'''AST''', '''Ast''', or '''ast''' may refer to:
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==Education==
* [[AST (exam)]] (Aptitude Scholastic Test), a standardized university entrance examination
* [[ACT Scaling Test]], for year 12 students, Australia
* [[Advanced Skills Teacher]], a teaching role in England and Wales
* [[Air Service Training]], a flight engineering training school
* [[American School in Taichung]], an international school in Taichung, Taiwan
* [[American School of Tangier]]
* [[American School of Tegucigalpa]]
* [[American School of Tripoli]]
* [[Atlantic School of Theology]], Halifax, Nova Scotia, Canada
* [[Avalanche Skills Training]], Canada
* [[Conroe ISD Academy of Science and Technology]], Texas, US

==Science and technology==
* [[Attention schema theory]], of consciousness or subjective awareness

===Computing===
* [[Abstract syntax tree]], a finite, labeled, directed tree used in computer science
* [[Anamorphic stretch transform]], a physics-inspired signal transform
* [[Andrew S. Tanenbaum]] (born 1944), American-Dutch computer scientist, sometimes identified as "ast" 
* [[Asynchronous system trap]], a mechanism used in several computer operating systems
* [[Application security|Application security testing]], testing the operation and security of a software application
* [[Application security|Application support team]], a team of application support analysts supporting IT services delivered to users within an organisation, enabling the required operational processes needed for the business to be successful.

===Medicine===
* [[Aspartate transaminase]], an enzyme associated with liver parenchymal cells
* [[Antibiotic sensitivity testing]] or antibiotic susceptibility testing, the measurement of the susceptibility of bacteria to antibiotics

===Mathematics===
* [[Alternative set theory]]
* [[Alternating series test]]

==Organizations==
* [[Allied Security Trust]], a patent holding company
* [[AST Research]], a defunct personal computer manufacturer
* Association for Software Testing, US
* [[AST (publisher)]], a Russian book publishing company
* [[Arsenal Supporters' Trust]], English football club supporters
* [[Augstsprieguma tīkls]], independent electricity transmission state system operator in Latvia

===Politics and government===
* ''[[Abwehr#Ast_%2F_Abwehrstelle|Abwehrstelle]]'' or ''Ast'', the local intelligence center in each military district in Nazi Germany
* [[Alaska State Troopers]], state police agency in Alaska, US
* [[Chadian Social Action]] ({{langx|fr|Action Sociale Tchadienne|link=no}}), a former political party in Chad
* [[Office of Commercial Space Transportation]], of the US FAA

* Asturians, as used by ast.wikipedia.org

==Transport==
* [[Aldershot GO Station]], Amtrak station code AST
* [[Astoria Regional Airport]] (FAA Identifier and IATA code <code>AST</code>), Clatsop County, Oregon, US
* [[Aston railway station]] (National Rail code), Birmingham, England

==Time zones==
* [[Atlantic Standard Time]], UTC−4
* [[Alaska Standard Time]], UTC−9
* [[Arabia Standard Time]], UTC+3
* [[Time in Antigua and Barbuda|Antigua and Barbuda Time]], UTC−4

==Other uses==
* [[Aviation Survival Technician]], a US Coast Guard rating
* [[AST Research]], Inc., as known as AST Computer, a [[personal computer]] manufacturer
* [[Asti]], Italian province and city (was traditionally ''Ast'' in the Piemontese dialect)
* [[Assured shorthold tenancy]], UK
* [[Asturian language]] (ISO 639 alpha-3: <code>ast</code>), Spain
* [[Astana Pro Team]] (UCI code AST), a professional road bicycle racing team
* [[Georg Anton Friedrich Ast]], German philosopher and philologist (1778–1841)
* [[Pat Ast]], American actress and model (1941-2001)
* [[AST SpaceMobile]], American satellite manufacturer

{{disambiguation}}