| ABCA | Army Bureau of Current Affairs |
| ABSM | Alberta Bureau of Surveying and Mapping |
| ACB | Annoyance Call Bureau |
| ACB | Arts and Culture Bureau |
| ACRB | Automotive Customer Relations Bureau |
| ACVB | Atlanta Convention Visitors Bureau |
| ACVB | Albuquerque Convention and Visitors Bureau |
| ACVB | Athens Convention Visitors Bureau |
| ACVB | Augusta Convention and Visitors Bureau |
| ACVB | Athens Convention and Visitors Bureau |
| ADWR | Alaska Defends White Religions |
| AECB | Al Etihad Credit Bureau |
| AEIB | Architectural Engg Innovations Bureau |
| AFBF | American Farm Bureau Federation |
| AIB | Anti Infringement Bureau |
| AIB | Automobile Insurers Bureau |
| AIB | Alien Investigation Bureau |
| AICB | American International Crane Bureau |
| ALPB | American Lutheran Publicity Bureau |
| AOTB | Auburn and Opelika Tourism Bureau |