| Abbreviation | Definition |
|---|---|
| AZBC | Arizona Baseball Club |
| AZCC | Arkansas Z Car Club |
| AZCC | Atlanta Z Car Club |
| BAAC | Bay Area Alumni Club |
| BAAC | Bay Area Athletic Club |
| BAAC | Bel Air Athletic Club |
| BAAC | Buffalo Area Aquatic Club |
| BAARC | Bay Area Adventure Riders Club |
| BAARC | Bay Area Amateur Radio Club |
| BAARC | Brainerd Area Amateur Radio Club |
| BAARC | Broken Arrow Amateur Radio Club |
| BABC | Boston Amateur Basketball Club |
| BAC | Black Awareness Club |
| BAC | Buffalo Athletic Club |
| BACL | Business Angels Club Liechtenstein |
| BADMC | Ballynahinch and District Motor Club |
| BAEC | British Amateur Electronics Club |
| BAFC | Banstead Athletics Football Club |
| BAFC | Bishop Auckland Football Club |
| BAFC | British Airborne Forces Club |