AAC may refer to:
Aviation Advanced Aircraft, a company from Carlsbad, California, US Airborne aircraft carrier, a type of aircraft Alaskan Air Command, a radar network American Aeronautical Corporation, a company from Port Washington, New York, US American Aviation, a company from Cleveland, Ohio, US Amphibian Airplanes of Canada, a company from Squamish, British Columbia, Canada Civil Aviation Authority (El Salvador) (Autoridad de Aviación Civil) Civil Aviation Authority (Panama) (Autoridad Aeronáutica Civil) El Arish International Airport in North Sinai Governorate, Egypt (IATA airport code AAC) Biology and Medicine Anesthesiologist assistant (sometimes abbreviated AA-C), an assistant to an anesthesiologist Augmentative and alternative communication, a class of communications methods for people with speech impairments Pseudomembranous colitis, also known as antibiotic associated colitis, a medical complication AAC, a codon for the amino acid asparagine Adenine nucleotide translocator (ANT), also known as the ADP/ATP carrier protein (AAC)
Education Anthony Abell College, a secondary school in Brunei Art Academy of Cincinnati, a private college in Cincinnati, Ohio, US Association of American Colleges known today as the American Association of Colleges and Universities Coimbra Academic Association, a Portuguese students' union Antimicrobial Agents and Chemotherapy, an academic journal
Military Advanced Armament Corporation, manufacturer of sound suppressors AAC Honey Badger, assault rifle United States Army Acquisition Corps United States Army Air Corps, a former component of the US Army Army Apprentices College, a former UK college Army Air Corps (United Kingdom), a component of the British Army Australian Air Corps, immediate predecessor of the Royal Australian Air force Australian Army Cadets, a youth organisation
Organizations Adult Association of Canada, a coalition of strip club owners and their agents Affirming Anglican Catholicism, a religious movement Alameda Arts Council American Anglican Council, a religious organization Australian Agricultural Company, a company Australian Aluminium Council, an industry association Awami Action Committee, political organisation in Pakistan Armenian Apostolic Church, the national church of Armenia
Sports American Airlines Center, a multipurpose arena in Dallas, Texas, US American Alpine Club, a climbing organization Appalachian Athletic Conference, an NAIA college athletics conference in the US American Conference (NCAA) (formerly known as the American Athletic Conference), a collegiate athletic conference in the US Western North Carolina Athletic Conference, a high school organization known as the Appalachian Athletic Conference until 2009 Asia-Pacific Amateur Championship, formerly Asian Amateur Championship, an APGC golf tournament Associação Académica de Coimbra – O.A.F., a Portuguese football organization Associação Académica de Coimbra – basketball, a Portuguese basketball club Associação Académica de Coimbra – volleyball, a Portuguese volleyball club Associação Académica de Coimbra, the students' union of the University of Coimbra, which sponsors other sports, including rugby Association of Alabama Camps, a youth camp organization Atlanta Athletic Club, a private athletic club in Duluth, Georgia, US Audax Alpine Classic, a bicycle event in Victoria, Australia
Technology Advanced Audio Coding, an audio compression format Air arc cutting, a gouging process for metals Auto Avio Costruzioni 815, a car by Ferrari Autoclaved aerated concrete, a building material Photochrom, also known as the Aäc process
Other uses Anne Arundel County, Maryland, US Ari language (New Guinea), coded aac in ISO 639-3