AST, Ast, or ast may refer to:

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 (), 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