As
- .as
- A. S. Byatt
- A.S. Roma
- AS S1 and AS S2
- AS Type A2
- AS-level (disambiguation)
- Aas (surname)
- Abramowitz and Stegun
- Academia Sinica
- ActionScript
- Adolf Dygasiński
- Adult Swim
- Aggregate supply
- Akademiska Sångföreningen
- Akciová společnost
- Akciová spoločnosť
- Aksjeselskap
- Aktieselskab
- Alaska Airlines
- Almost surely
- Altostratus
- Amateurliga Saarland
- American Samoa
- Angelman syndrome
- Ankylosing spondylitis
- Anti-submarine warfare
- Aortic stenosis
- Application server
- Armée secrète
- Armée secrète (Belgium)
- Arsenic
- As (Roman coin)
- As (cuneiform)
- As (newspaper)
- As (song)
- As language
- As the Dog
- As, Belgium
- As, Ukraine
- As-e Jadid
- As-e Qadim
- Asparagine synthase (glutamine-hydrolysing)
- Asperger syndrome
- Assam
- Assamese language
- Associate of Science
- Athletics (baseball)
- Attosecond
- Attosiemens
- Auricular splint
- Australia
- Australian Standards
- Autonomous system (Internet)
- Aš
- Aš (cuneiform)
- C Sharp (programming language)
- Cerylonidae
- Hawaiian Airlines
- KK AS Basket
- List of auxiliaries of the United States Navy
- Ossetians
- Peace be upon him
- Rust (programming language)
- Society for Creative Anachronism
- Towarzystwo Budowy Samochodów AS
- Tropical savanna climate
- United States
- Voiturettes Automobiles A.S.
- Ås, Akershus
- Ås, Sør-Trøndelag
- Æsir