| Abbreviation | Definition |
|---|---|
| ASA | American Subbuteo Association |
| ASAI | Adult Softball Association of Irving |
| ASAP | Amateur Sports Assistance Program |
| ASAP | Artistic Sports Academy Plus |
| ASAP | Atlanta Sydney Athens Plus |
| ASATT | Amateur Swimming Association of Trinidad and Tobago |
| ASB | All Star Baseball |
| ASB | Angel Special Bowstring |
| ASB | Aoki Stretch Blow |
| ASBA | American Sports Builders Association |
| ASBB | Association Sportive Brains Basket |
| ASC | Anti Spawn Camping |
| ASC | Arizona Ski Council |
| ASC | Arizona Sports Complex |
| ASCN | Action Sports Cable Network |
| ASCOA | Antique Snowmobile Club of America |
| ASD | Association Sportive de Djerba |
| ASDA | American Sand Drag Association |
| ASDG | Austin Soccer Development Group |
| ASDP | Automatic Sports Dive Planner |