| AACB | ABN AMRO Clearing Bank 
| Others |
| AACB | Adazi Ani Community Bank
| Others |
| AACB | Aeronautics and Astronautics Coordinating Board
| Others |
| AACB | Ann Arbor Concert Band
| Others |
| AACB | Appalachian Area Chapter of Blacksmiths
| Others |
| AACB | Associate of the Association of Certified Book-Keepers
| Others |
| AACB | Association of Accredited Certification Bodies
| Others |
| AACB | Association of African Central Banks
| Others |
| AACB | Association of Australian Convention Bureaus
| Others |
| AACB | Association of Australian Convention Bureaux
| Others |
| AACB | Australasian Association of Clinical Biochemists
| Others |