| Abbreviation | Definition |
|---|---|
| AIB | Anti Infringement Bureau |
| AIB | Automobile Insurers Bureau |
| AICB | American International Crane Bureau |
| ALPB | American Lutheran Publicity Bureau |
| AOTB | Auburn and Opelika Tourism Bureau |
| AOTB | Auburn Opelika Tourism Bureau |
| AQB | Air Quality Bureau |
| ARB | American Research Bureau |
| ASIB | Automatic Sprinkler Inspection Bureau |
| ASLIB | Association of Special Libraries Information Bureau |
| ASVB | American Samoa Visitors Bureau |
| ATAB | Area Trunk Assignment Bureau |
| ATF | Bureau of Alcohol, Tobacco, Firearms and Explosives |
| ATSB | Australian Transport Safety Bureau |
| AWPB | American Wood Preservers Bureau |
| BAA | Bureau of Assessment and Accountability |
| BAAI | Bureau Of Air Accident Investigation |
| BAD | Bureau Of Alien Detectors |
| BADA | Bureau Of Alcohol And Drug Abuse |
| BAE | Bureau of Astonishing Explanations |