| Abbreviation | Definition |
|---|---|
| BPO | Brisbane Philharmonic Orchestra |
| BPO | Buffalo Philharmonic Orchestra |
| BPOP | Brazilian Pop music |
| BPPB | Bull Pen Pep Band |
| BQAD | Be Quiet And Drive |
| BQP | Big Quartet Production |
| BQP | Brooklyn Qawwali Party |
| BR | Bass Reflex |
| BR | Blur |
| BR | By Request |
| BRASS | Beaches Residents Actively Supporting the Symphony |
| BRB | Blaire Reinhard Band |
| BRBAA | Big Red Band Alumni Association |
| BRBB | Bend in the River Big Band |
| BRBB | Bend in the River Brass Band |
| BRBB | Big Red Basketball Band |
| BRBB | Blue Ribbon Bluegrass Band |
| BRBB | Byres Road Big Band |
| BRC | Billy Ray Cyrus |
| BRC | Blue Rose Code |