| Abbreviation | Definition |
|---|---|
| BSCO | Bonny Slope Community Organization |
| BSI | Building Stone Institute |
| BSIA | British Security Industry Association |
| BSME | British Society of Magazine Editors |
| BSME | British Society of Magazine Editors British Society of Magazine Editors British Society of Magazine Editors |
| BSP | British Society for Parasitology |
| BSPA | British Speedway Promoters' Association |
| BSR | Business for Social Responsibility |
| BSY | Brave Switch Young |
| BTA | Best Thieves Association |
| BTAA | British Travelgoods and Accessories Association |
| BTAT | Boating Trades Association of Texas |
| BTBA | Barbados Thoroughbred Breeders Association |
| BTBA | British Tenpin Bowling Association |
| BTCG | Break The Cycle Glenquarie |
| BTDA | Boston Taxi Drivers Association |
| BTRA | Beach Triangle Residents Association |
| BTS | British Thoracic Society |
| BTTA | Blaenavon Town Traders Association |
| BUILD | Businesspersons United In Louisville's Development |