AOS

AOS, Aos or AoS may refer to:

Military, police and government

 * Armed Offenders Squad, a branch of the New Zealand Police
 * Armed Offenders Squad (Victoria), a disbanded branch of the Victorian Police in Australia
 * Amook Bay Seaplane Base (IATA code AOS)
 * Adjustment of status, an immigration concept in the United States

Schools and education

 * Academy of the Sierras, boarding schools devoted to weight loss
 * The Alice Ottley School, Worcester, England
 * AO Springfield School, Worcester, England
 * Associate of Occupational Studies, a two-year college degree
 * Annunciation Orthodox School, a Greek Orthodox private school in Houston, Texas
 * Loudoun Academy of Science, a high school STEM program in Loudoun County, Virginia

Science and academia

 * Accessory olfactory system, a second sense of smell in some animals
 * Accounting, Organizations and Society, an academic journal
 * Acquisition of signal, in spacecraft communications
 * Agricultural Ontology Service
 * American Oriental Society, a learned society
 * American Ornithological Society
 * Angle of sideslip
 * Apraxia of speech, a speech sound disorder
 * Area of Search, a geographical region used in the selection of Sites of Special Scientific Interest in the UK
 * Adams–Oliver syndrome, a congenital disorder

Popular culture

 * Agents of S.H.I.E.L.D., an American television series set in the Marvel Cinematic Universe
 * Ace of Spades (video game)
 * Ace of Spades HQ, a political blog
 * Aeon of Strife, an early multiplayer online battle arena (MOBA)
 * Age of Sail (computer game)
 * Age of Sail II, its sequel
 * Castlevania: Aria of Sorrow, a game for the Game Boy Advance
 * "AOS" (song), 1970, by Yoko Ono, featuring Ornette Coleman
 * All-Out Sundays, a Philippine GMA Network Sunday variety show
 * Warhammer Age of Sigmar, a tabletop wargame

Technology

 * Academic Operating System, a version of 4.3 BSD Unix for the IBM RT
 * Algebraic operating system, an input method used on many Texas Instruments calculators
 * AmigaOS
 * Apple Online Store, the retail web site for Apple Inc.
 * Array of structures, an interleaved data format
 * Data General AOS (Advanced Operating System)
 * A2, an operating system formerly named Active Object System (AOS)
 * Fedora AOS (Appliance Operating System), a small version of the Fedora Linux project
 * aos or AOS, acronym of "anonymous operating system", an earlier name for the operating system Whonix

People

 * Austin Osman Spare (1886–1956), English occultist and artist