| Abbreviation | Definition |
|---|---|
| BNCA | Boston North Cancer Association |
| BNCA | Brookland Neighborhood Civic Association |
| BNCA | Burnaby North Community Association |
| BNGA | Bangladesh National Geographical Association |
| BNPA | Bangladesh National Philatelic Association |
| BNWA | Brent Neighbourhood Watch Association |
| BOA | British Osteopathic Association |
| BOAA | Beta Omicron Alumni Association |
| BOAA | Bowmanville Older Adult Association |
| BOAG | Building Officials Association of Georgia |
| BOAL | Building Officials Association of Louisiana |
| BOAM | Building Officials Association of Mississippi |
| BOAST | British Orthopaedic Association Standard for Trauma |
| BOBA | Bali Old Boys Association |
| BOBA | Basenji Owners and Breeders Association |
| BOBA | Business Owners Benefits Association |
| BOMA | Building and Office Managers Association |
| BOMA | Building Owners Management Association |
| BOMA | Building Owners Managers Association |
| BOPA | Band and Orchestra Parents Association |