- AAAR stands for Arctic, Antarctic, and Alpine Research (journal; University of Colorado; Boulder, CO)
- AAAR stands for American Association for Aerosol Research
- AAAR stands for And As A Result
- AAAR stands for Abbreviated Aviation Accident Report
- AAAR stands for Aircraft Accounting Audit Report (US Navy)
- AAAR stands for Aqua-Ammonia Absorption Refrigeration
AAAR