| Abbreviation | Definition |
|---|---|
| BIRAC | Biotechnology Industry Research Association Council |
| BISA | British International Spa Association |
| BISA | Business Indonesia Singapore Association |
| BISA | Business Information Systems Association |
| BISFA | British Industrial Safety First Association |
| BISFA | Bulletin of the International String Figure Association |
| BISRA | British Iron and Steel Research Association |
| BISRA | British Iron Steel Research Association |
| BISSA | Business Information Systems Student Association |
| BITA | British Industrial Truck Association |
| BITA | British Interior Textiles Association |
| BITA | Brunei Insurance Takaful Association |
| BITOA | British Incoming Tour Operator Association |
| BITPA | Bahamas Information Technology Professionals Association |
| BITPA | British Indoor Trampoline Park Association |
| BIUA | Bermuda Independent Underwriters Association |
| BIVDA | British In Vitro Diagnostics Association |
| BJAA | Braun Jeffery Athletic Association |
| BJAA | British Jungian Analytic Association |
| BJECA | Busselton Jetty Environment and Conservation Association (Australia) |