| Abbreviation | Definition |
|---|---|
| ATB | All Terrain Board |
| ATB | All-Terrain Bike |
| ATR | Advanced Technology Recycling |
| AZCX | Arizona Cyclocross |
| BABC | Bay Area Bicycle Coalition |
| BACA | Bicycle Advocacy Of Central Arkansas |
| BACE | Bend Area Cycling Enthusiasts |
| BAK | Bike Across Kansas |
| BAMBA | Berks Area Mountain Biking Association |
| BAP | Bicycle Action Project |
| BARC | Biker Advanced Recon Commando |
| BAW | Bicycle Alliance of Washington |
| BBBA | Brett's Big Biking Adventure |
| BBP | Boise Bicycle Project |
| BCCC | Beach Cities Cycling Club |
| BCOY | Bicycle Commuter of the Year |
| BE | Bike Evolution |
| BEBA | British Electric Bicycle Association |
| BFAD | Bicycle For a Day |
| BFAD | Bicycle for a Day's |