| Abbreviation | Definition |
|---|---|
| AB | Air Bike |
| AB | At Bats |
| ABA | Alberta Bicycle Association |
| ABA | Amateur Bodybuilding Association |
| ABA | American Basketball Association |
| ABA | American Bass Anglers |
| ABA | American Bicycle Association |
| ABA | Atwater Basketball Association |
| ABAC | Arlington Bicycle Advisory Committee |
| ABAM | Archers and Bowhunters Association of Manitoba |
| ABATE | Alaska Bikers Advocating Training And Education |
| ABATE | American Bikers for Awareness, Training, and Education |
| ABB | Aitkin Backyard Boxing |
| ABB | American Bucking Bull |
| ABBK | Ask??y Basketball Klubb |
| ABBL | Austin Blood Bowl League |
| ABC | Adventure Balance And Challenge |
| ABC | Agility, Balance, and Coordination |
| ABC | American Bowling Congress |
| ABC | Another Blowout Coming |