AS, As, aS, or as may stand for:
AS
AS (automobile), a small French car
AS (newspaper), a Spanish sports newspaper
''AS'', the abbreviation for Alaska Airlines
''Acquisition Strategy'', a high-level business and technical management approach designed to achieve program objectives within specified resource constraints
Actionscript, a programming language
Acrylonitrile Styrene, a type of rigid plastic, Now largely replaced by ABS.
Admittance Spectroscopy
Adult Swim, a late night comedy and action television block on the Cartoon Network
Advanced Subsidiary, an A-level in the British school system
Aggregate supply, in economics
Aksjeselskap, the term for a stock-based corporation in Norway
Aktieselskab, the term for a stock-based corporation in Denmark
Alan Shearer
Alaska Airlines, IATA airline designator
alayhi is-salaam, an Arabic transliteration for ''Peace be upon him''
Alexander Solzhenitsyn
American Samoa, 2-letter ISO country code
.as is the ccTLD for American Samoa
Angelman syndrome
Ankylosing spondylitis
Anti-submarine - when written A/S
Aortic stenosis
Application Server
Arion Salazar, bassist for Third Eye Blind
Armstrong Siddeley, a manufacturer of piston aircraft engines in the 1920s.
Asheville School, a boarding school in North Carolina
Asperger syndrome
Associate of Science
Australia, obsolete NATO digram
Autistic spectrum
Autonomous system (Internet)
Submarine tender, US Navy hull classification symbol
Ashlee Simpson, a pop music singer
Audioscrobbler, now Last.fm, a social music website
Appraised by Seller, a term on real estate advertisements relating to square footage measurements
As
Chemistry
arsenic (As), chemical symbol for the chemical element
Mythology:
Aesir, in Norse mythology
Ash (god), alternate spelling in Egyptian mythology
Geography:
As, Belgium, a municipality in Belgium
Ås, Askershus fylke, Norway
Ås, Krokoms kommun, Sweden
Ås, Nora kommun, Sweden
Ås, Gislaveds kommun, Sweden
Aš, a town in the Czech Republic
As (coin) in Ancient Rome valued at 1/16 of a denarius
''As'', a song by Stevie Wonder, later also recorded by Elkie Brooks then George Michael featuring Mary J. Blige