AOS

AOS, Aos or AoS may refer to:

Military, police and government

Armed Offenders Squad, branch of the New Zealand Police
Armed Offenders Squad (Victoria), disbanded branch of Victoria Police
Amook Bay Seaplane Base (IATA: AOS)
Adjustment of status, immigration concept in the United States
Airway Operational Support, a directorate of the US Federal Aviation Administration

Academy of the Sierras, boarding schools devoted to weight loss
The Alice Ottley School in Worcester, England
AO Springfield School in Worcester, England
Associate of Occupational Studies, a type of two-year college degree
Annunciation Orthodox School, a Greek Orthodox private school in Houston, Texas
Loudoun Academy of Science, part-time alternative school program for high school students enrolled in Loudoun County Public Schools

Accessory olfactory system, sensory system often responsible for the detection of pheromones
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, an oral motor speech disorder
Area of Search, geographical areas used in the selection of Sites of Special Scientific Interest in the UK
Adams–Oliver syndrome, a rare congenital disorder

Agents of S.H.I.E.L.D., a TV series on the ABC Network based on Marvel's fictional organization, S.H.I.E.L.D.
Ace of Spades (video game)
Ace of Spades HQ, blog
Aeon of Strife, an early "multiplayer online battle arena (MOBA)"
Age of Sail (computer game) and its sequel Age of Sail II
Castlevania: Aria of Sorrow, a game in the Castlevania series for the Game Boy Advance
Star Trek "Alternate Original Series", films created post-Enterprise
"AOS" a song on Yoko Ono's 1970 album Plastic Ono Band featuring Ornette Coleman
All-Out Sundays, a Philippine Sunday variety show on GMA Network

Academic Operating System, IBM's version of 4.3 BSD Unix for the IBM RT
Algebraic Operating System, expression evaluation rules with operator priorities and infix notation, as used on many Texas Instruments calculators
AmigaOS
Apple Online Store, an online store of Apple Inc.
Array of structures, interleaved data format
Data General AOS, Data General's Advanced Operating System
Bluebottle OS also known as Active Object System
Fedora AOS (Appliance Operating System), a reduced-footprint spin of the Fedora project for use in software appliance system images
Application Object Server, a service that controls all aspects of Microsoft Dynamics AX's operation