AAS

Aas or AAS may refer to:

• Aas (surname)
• Aas, Pyrénées-Atlantiques, a village in France

Businesses

• Ateliers Aéronautiques de Suresnes, a defunct French aircraft manufacturing company
• Alcatel Alenia Space, an aerospace company; now Thales Alenia Space
• Austrian Air Services, a defunct airline from Austria (ICAO designator)

Organizations

• Air Ambulance Service, a UK charity
• American Antiquarian Society, an American society and national research library
• American Arachnological Society, a society of amateur and professional arachnologists
• American Astronautical Society, an independent scientific and technical group in the United States
• American Astronomical Society, a United States society of professional astronomers
• Arnold Air Society, a professional honorary service organization for Air Force officer candidates
• Australian Academy of Science, an independent, government-endorsed society with the aim of promoting science
• Australian Anthropological Society
• American Anti-Slavery Society
• All-America Selections, an organization that promotes development of new garden seed varieties
• Association for Academic Surgery
• Association for Asian Studies
• Assyrian Aid Society
• Assyrian Academic Society
• Jamaat Ansar al-Sunna, or Ansar al-Sunna, a militant group operating in Iraq

In business

• Audit and Assurance Standards issued by ICAI, the Institute of Chartered Accountants of India

In education

• Army Apprentices College, or Army Apprentices School
• Architectural Association School of Architecture, a school of architecture in the United Kingdom
• Asian American Studies, an academic discipline which studies the experience of people of Asian ancestry in America
• Associate in Applied Science(s), an academic degree
• Anglo-American School of Moscow

In science, mathematics, and technology

• Asymptotically almost surely
• Angle-Angle-Side, see congruence (geometry)
• Atomic absorption spectroscopy, a methodology of analytical chemistry
• Advanced SubStation Alpha, a subtitle file format
• ASCII Adjust after Subtraction, an Intel 80x86 processor instruction; see Intel BCD opcode

In medicine

• Adult-onset Ankylosing Spondylitis, a form of disease occurring in older males
• Anabolic–androgenic steroid, or simply anabolic steroid

Other uses

• A.a.s (art group), a British-based art collective
• Abandon All Ships, a Canadian band
• Acta Apostolicae Sedis, the official commentary of the Holy See/Vatican City State
• All About Steve, a 2009 comedy film starring Sandra Bullock and Bradley Cooper
• Apalapsili Airport in Apalapsili, Indonesia (IATA airport code AAS)
• Armed Aerial Scout a U.S. Army replacement program for the OH-58 Kiowa
• Asa language, an extinct language of Tanzania
• Taylor County Airport (Kentucky) in Campbellsville, Kentucky, United States (IATA airport code AAS)
• Sony Auto-lock Accessory Shoe, a flash hotshoe based on the Minolta iISO shoe used by Sony between 2006 and 2012