| AAIB | African Alliance Investment Bank 
| Others |
| AAIB | Air Accident Investigation Branch
| Others |
| AAIB | Air Accident Investigation Bureau
| Others |
| AAIB | Air Accidents Investigation Branch
| Others |
| AAIB | Air Accidents Investigation Branch (United Kingdom)
| Others |
| AAIB | Aircraft Accident Investigation Board
| Others |
| AAIB | Aircraft Accident Investigation Branch
| Others |
| AAIB | Aircraft Accident Investigation Bureau
| Agency |
| AAIB | Aircraft Accident Investigation Bureau
| Others |
| AAIB | American Association for the Improvement of Boxing
| Others |
| AAIB | Arab African International Bank
| Others |
| AAIB | Aviation Accidents Investigation Branch
| Others |