AAC
AAC stands for:
- Academy for Architectural Culture , private and non-profit advanced training facility for architecture students and young architects in Hamburg
- Advanced Audio Coding , an audio data compression method
- Al Arish Airport (IATA code) in Egypt
- All African Convention , a former opposition group in South Africa
- Alpe Adria Cup , supranational club competition in men's basketball
- American Airlines Center , a stadium in Dallas, Texas
- American Alpine Club , American Alpine Club
- American Athletic Conference , American college sports league within the NCAA
- Army Air Corps (British Army) , Great Britain's army aviators
- ATP / ADP carrier in molecular biology, see ATP / ADP translocase
- Augmentative and Alternative Communication , see Supported Communication
- Austrian Association of Cinematographers , Association of Austrian Cinematographers
aac stands for:
- Ari (language) (ISO-639-3 code), one of the Trans New Guinea languages
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