AS may refer to:

Science and technology

• A. S. (automobile), a small French car in the 1920s
• as (Unix), an assembler on Unix
• Aggregate supply, the total supply of goods, in economics
• Associate of Science, an American Associate's degree
• Arsenic, chemical symbol As
• Autonomous system (Internet), a collection of IP networks
• Attosecond or as, one trillionth of a second, a unit of time
• Attosiemens or aS, one trillionth of a siemens, a unit of electric conductance
• AS, the hull classification symbol for Submarine tenders

People

• Ossetians were called As or Asi by the Georgians and Russians in the past.

Medicine

• Angelman syndrome, a neuro-genetic disorder
• Aortic stenosis, a valvular heart disease
• Ankylosing spondylitis, a type of arthritis
• Autism spectrum
• Asperger syndrome, an autism spectrum disorder

Places

• American Samoa, country code
• As, Belgium, a municipality in Belgium
• Ås, Askershus fylke, Norway
• Aš, a town in the Czech Republic
• Ås Hundred - a hundred of Västergötland in Sweden
• Australia, obsolete NATO country code

Organisations

• Aksjeselskap or A/S, a Norwegian stock-based company
• Aktieselskab or A/S, a Danish a stock-based corporation
• Alaska Airlines, IATA airline designator
• Diario AS, a Spanish sports newspaper

Other usage

• As (coin), a Roman coin and weight unit
• "As" (song), a song by Stevie Wonder
• Anti-submarine warfare
• Assamese language, ISO 639 alpha-2 language code
• Adult Swim, an adult-oriented block of programming on Cartoon Network

See also

• AS-level (disambiguation)
• Aas (surname) (also Ås)