| Abbreviation | Definition |
|---|---|
| BRDR | Blue Ridge Doberman Rescue |
| BREN | Blue Ridge Environmental Network |
| BRH | Boston Realty Hub |
| BRIF | Bangladesh Rural Improvement Foundation |
| BRN | Business Referral Network |
| BRO | Bikers Rights Organization |
| BRO | Border Roads Organization |
| BROF | Blue Ridge Orthopaedic Foundation |
| BRR | Bylaws Resolutions And Recommendations |
| BRWC | Bear River Watershed Council |
| BSCC | Bedford Senior Citizens Center |
| BSCF | Blue Shield of California Foundation |
| BSDS | Bangladesh Social Development Services |
| BSEC | Bio-ethics Society of the English-speaking Caribbean |
| BSEC | Brooklyn Society for Ethical Culture |
| BSF | Bangulma Scholarship Foundation |
| BSF | Bi-national Science Foundation |
| BSI | Bible Society of India |
| BSI | BlindSkills, Inc. |
| BSNC | Bead Society of Northern California |