| Abbreviation | Definition |
|---|---|
| ABC | Anybody But Carolina |
| ABC | Association of Boxing Commissions |
| ABCA | Albury Border Cricket Association |
| ABCA | American Baseball Coaches Association |
| ABCDE | Anabolic Burst Cycling of Diet and Exercise |
| ABD | Art of Boomerang Design |
| ABE | Artificial Baseball Engine |
| ABF | American Bodybuilding Federation |
| ABFZ | Amateur Boxing Federation of Zambia |
| ABJG | Anybody But Jeff Gordon |
| ABK | America's Best Karate |
| ABKA | American Bushido-kai Karate Association |
| ABL | ABiLities Centre |
| ABM | Auto Banishment Match |
| ABN | American Baseball Network |
| ABRC | Asheville Bicycle Racing Club |
| ABRR | America's British Reliability Run |
| ABS | Active Battle System |
| ABS | Anti Bolt Stick |
| ABSC | Australian Billiards and Snooker Council |