AAC

AAC may refer to:

In aviation:

* IATA airport code for El Arish International Airport, Egypt
* Advanced Aircraft Corporation, an aircraft manufacturer based in Carlsbad, California
* American Aviation Corporation, an aircraft manufacturer based in Cleveland, Ohio
* Alaskan Air Command, a radar network
* Enea Bossi, Sr.#American Aeronautical Corporation, an aircraft designer and manufacturer
* Amphibian Airplanes of Canada, a developer and marketer of light amphibious aircraft based in Squamish, British Columbia

In camping:
* Association of Alabama Camps, an association that represents the interests of the children and families who attend camps in Alabama, as well as the camps themselves.

In computing:
* Advanced Audio Coding, an audio compression format specified by MPEG-2 and MPEG-4, and successor to MPEG-1’s “MP3” format.

In education and communication:

* Associação Académica de Coimbra, the students' union of the University of Coimbra
* Augmentative and alternative communication, an area of research, clinical, and educational practice

In military contexts:

* Airborne aircraft carrier, an aircraft which can launch other aircraft
* Army Air Corps (United Kingdom), a component of the British Army
* Army Apprentices College, a college that offered military training, education and common core skills
* Australian Army Cadets, a youth organisation that is involved with progressive training of youths in military and adventurous activities
* Advanced Armament Corp., a suppressor manufacturer

In sports:

* American Airlines Center, an arena located near downtown Dallas, Texas
* American Alpine Club, an American organization
* Appalachian Athletic Conference, an athletic conference sanctioned by the NAIA
* Associação Académica de Coimbra - O.A.F., an autonomous and professional football organization based in Coimbra, Portugal
* Atlanta Athletic Club, a world-renowned private athletic club in Duluth, Georgia
* Audax Alpine Classic, a tough 200km bicycle event in Victoria, Australia
* Mic Mac AAC, a club that is part of CanoeKayak Canada's Atlantic Division
* Pitreavie AAC, a Scottish organization

In other fields:

* Acting Assistant Commissioner
* Aerated autoclaved concrete, a lightweight, precast building material
* Affirming Anglican Catholicism, a movement operating in several provinces of the Anglican Communion in North America
* Agility Association of Canada, a dog organization
* Alameda Arts Council, the Alameda City arts council serving the arts in the Alameda area
* American Alpine Club, the leading national organization in the United States devoted to mountaineering, climbing, and the multitude of issues facing climbers
* American Anglican Council, a conservative organization within the Episcopal Church in the United States
* Antimicrobial Agents and Chemotherapy, an academic journal published by the American Society for Microbiology
* Australian Agricultural Company, a company which serves to improve beef cattle production through responsible natural resource and land use
* Australian Aluminium Council, an industry association representing Australian bauxite mining companies and aluminium smelters.
* Auto Avio Costruzioni 815, the first Ferrari car that was fully designed and built by Enzo Ferrari