| Abbreviation | Definition |
|---|---|
| BCSA | Book Collectors Society of Australia |
| BDM | Birth, Death And Marriages |
| BDOM | Bad Dates of Melbourne (Melbourne, Australia) |
| BERIA | British ExPat Retirees in Australia |
| BEWA | Business Educators of Western Australia (Rossmoyne, Western Australia, Australia) |
| BIAA | Boating Industries Alliance Australia |
| BIIA | Business Innovation and Incubation Australia |
| BIMA | Being In Multicultural Australia |
| BJECA | Busselton Jetty Environment and Conservation Association (Australia) |
| BKB | Brisbane Koala Bushlands |
| BLNF | Barossa Lower North Futures |
| BMAA | Blind Manufacturers Association of Australia |
| BNASC | Bundoora Netball and Sports Centre (Melbourne, Australia) |
| BOCA | Bird Observers Club of Australia |
| BOSSA | Building Occupants Survey System Australia |
| BPEA | Big Picture Education Australia |
| BRCA | BICSI Registered Cablers Australia |
| BRCA | BRCA Registered Cablers Australia |
| BSAA | Business Software Association of Australia |
| BSDE | Brisbane School of Distance Education (Australia) |