{{Wiktionary|AST|Ast|ast}} '''AST''', '''Ast''', or '''ast''' may refer to: {{TOC right}}

==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 testing, testing the operation and security of a software application * 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=== * ''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 * 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

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