AST

• 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 (), 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 AST), 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: ast), 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