| Abbreviation | Definition |
|---|---|
| AATS | Ames Airborne Tracking Sunphotometer |
| AATS | Annapolis Area Tennis School |
| AATT | Absolute Arrival Time Technique |
| AATT | After All This Time |
| AATT | And Also The Trees |
| AATT | Automate All The Things |
| AATT | Automated Accessibility Testing Tool |
| AATTC | Atelier Artisanal Tous Travaux Confondus |
| AATW | ABBAS Around The World |
| AATW | Airborne, All The Way |
| AATW | All Along The Watchtower |
| AATW | All Around The World |
| AATW | Ambient Around The World |
| AATW | America and the World |
| AATW | Anarchists Against The Wall |
| AATW | Asleep At The Wheel |
| AAU | All About Us |
| AAU | All Assassins Unit |
| AAU | Alpha Acid Units |
| AAU | Application Assistance Unit |