Articles of Confederation

Autonomy-oriented computation

Age of consent for sexual relationships

Advice of Charge, An extra feature of GSM specification, which provides the MS about the charge of a call.

Age of Empires II: The Conquerors Expansion, a realtime strategy game

Alliance of Civilizations, the organization associated with the UN.

Albanian Orthodox Church

Appellation d'Origine Contrôlée, a certification for French agricultural products

Architect of the Capitol

Air Operations Center - United States Air Force command and control (C2) system

"Arse on Couch", a slang term for couch potato behavior

Aon Corporation, an insurance corporation

Army Ordnance Corps, the predecessor of the Royal Army Ordnance Corps (RAOC) of the British Army

Australian Olympic Committee

Air Officer Commanding, a title used to refer to air force officers holding certain command appointments

Auxiliary Overhead Channel for bit-swapping in DSL

Air Operator Certificate, a commercial transport license for airlines

Altenburg-Nobitz Airport, in IATA code

Association of Old Crows, an organization in Alexandria, Virginia

Aeronautical Operational Control, A group of applications used for communication of an aircraft with its airline or service partner pendants on the ground

ALGOL object code, a simple and compact and stack-based instruction set architecture for the ALGOL programming language

Australasian Ornithological Conference

Aliança Operário-Camponesa, or the Worker-Peasant Alliance, a front of the Communist Party of Portugal (Marxist-Leninist) of Eduíno Gomes

Association of Colleges, an educational agency in the United Kingdom

Adelaide Ornithologists Club, an exclusive Adelaide, South Australia based birding club

Age of Conan: Hyborian Adventures, an upcoming online action RPG video game, for the PC and Xbox 360.

Arts Orange County - art council in California, USA