| Abbreviation | Definition |
|---|---|
| AO | Aviation Ordnance |
| AOA | Abort Once Around |
| AOA | Aircraft Operations Area |
| AOA | Angle Of Attack |
| AOAB | Aviation Operators Association of Bangladesh |
| AOAG | Aircraft Owners Association of Guyana |
| AOC | Air / Oil Cooler |
| AOC | Air Operator's Certificate |
| AOC | Aircraft Operating Certificate |
| AOC | Airline Operational Control |
| AOCM | Air Operators Certification Manual |
| AOCS | Aviation Officer Candidate School |
| AOD | Airport-Of-Discharge |
| AOE | Airport Of |
| AOG | Aircraft On Ground |
| AOG | Aircraft On The Ground |
| AOHE | Air/Oil Heat Exchanger |
| AOL | All Operator Letter |
| AOM | Aircraft On Maintenance |
| AOM | Aircraft Operating Manual |