| Abbreviation | Definition |
|---|---|
| BWANA | Boxed Wine Association of North America |
| BWFA | Blue Water Fastpitch Association |
| BWFA | Brotherhood of Working Farriers Association |
| BWHA | Beverly Wilshire Homes Association |
| BWHA | Buckeye Walking Horse Association |
| BWHA | Buckeye Western Horse Association |
| BWMA | British Weights and Measures Association |
| BWTA | Better World Today Association |
| BWTA | British Women's Temperance Association |
| BYA | Brownsville Youth Association |
| BYBA | British Youth Band Association |
| BYLA | Bethel Youth Lacrosse Association |
| BYLA | Bronxville Youth Lacrosse Association |
| BYLA | Burlington Youth Lacrosse Association |
| BYRA | Bayview Yacht Racing Association (Australia) |
| BYRA | Blackwater Yacht Racing Association (Smith Mountain Lake, VA) |
| BYSA | Blacktown Youth Services Association |
| CAA | California Aikido Association |
| CAA | California Alarm Association |
| CAA | California Apartment Association |