| Abbreviation | Definition |
|---|---|
| ACAV | Association of Construction Assessors and Verifiers |
| ACB | Association for Community Broadcasting |
| ACB | Association of Concert Bands |
| ACBA | Alameda County Bar Association |
| ACBA | Albany County Bar Association |
| ACBA | Allegheny County Bar Association |
| ACBA | Allen County Bar Association |
| ACBA | American Cavy Breeders Association |
| ACBA | American Croatian Business Association |
| ACBA | Anacostia Community Boathouse Association |
| ACBA | Arapahoe County Bar Association |
| ACBA | Arizona Classic Bowlers Association |
| ACBA | Association of Cavy Breeding Annual |
| ACBA | Austin Cooperative Business Association |
| ACBI | Association for Cricket for the Blind India |
| ACBS | Association for Contextual Behavioral Science |
| ACC | Association of Corporate Counsel |
| ACCA | Acute Cardiovascular Care Association |
| ACCA | American Correctional Chaplains Association |
| ACCA | Asia Cloud Computing Association |