| Abbreviation | Definition |
|---|---|
| BOTUS | Bunny of the United States |
| BOTW | Beers of the World |
| BPOR | Board for Professional and Occupational Regulation (Virginia) |
| BR | Big Rock Point, Michigan |
| BRAC | Baton Rouge Area Chamber |
| BRDN | Buffalo River Dene Nation |
| BRF | Black River Falls |
| BSCS | Black Sea Coastal States |
| BSTX | Balch Springs, Texas |
| BUS | Belle Urban System, the transit agency serving Racine, Wisconsin |
| BUS | business route on a highway |
| BVA | Bluefield, Virginia |
| C | Cleveland |
| C | Colorado |
| C | Columbus |
| CA | California |
| CADS | Casualty Actuaries of the Desert States |
| CAL | California |
| Cal. | California |
| CALI | California |