| Abbreviation | Definition |
|---|---|
| BPM | Body Power Method |
| BPS | Balls Per Second |
| BPT | Beer Pong Tournament |
| BPV | Battle Point Value |
| BQ | Boston Qualified |
| BR | Barrel Racing |
| BR | Battle Race |
| BR | Before Restart |
| BR | Bench Rest |
| BR | Break Rule |
| BRA | Backyard Rasslin Association |
| BRA | Boxing Records Archive |
| BRAI | Bike Ride Across Iowa |
| BRAN | Bicycle Ride Across Nebraska |
| BRAN | Bike Ride Across Nebraska |
| BRAT | Bicycle Ride Across Tennessee |
| BRAT | Budding Racer Awaiting Time |
| BRATS | Best Ranglers At The Show |
| BRB | Babe Ruth Baseball |
| BRB | Back Rub Boy |