| Abbreviation | Definition |
|---|---|
| BBS | Association of Swiss Libraries and Librarians |
| BBS | Associazione delle Biblioteche e delle Bibliotecarie e dei Bibliotecari Svizzeri |
| BBS | Associaziun da Bibliotecas, da Bibliotecaras e Bibliotecaris da la Svizra |
| BBS | British Bryological Society |
| BBS | Verband der Bibliotheken und der Bibliothekarinnen/Bibliothekare der Schweiz |
| BBTS | British Blood Transfusion Society |
| BBUS | Black Business Undergraduate Society |
| BBWS | Bikash Bharati Welfare Society |
| BCA | British Cement Association |
| BCA | British Crystallographic Association |
| BCAO | Association des optométristes de la Colombie-Brittanique |
| BCAO | Association des optomtristes de la Colombie-Brittanique |
| BCAO | British Columbia Association of Optometrists |
| BCAS | Black Canyon Astronomical Society |
| BCAS | Bombay Chartered Accountants' Society |
| BCAS | British Compressed Air Society |
| BCAS | Bucks County Audubon Society |
| BCAS | Buffalo Choral Arts Society |
| BCCS | Barber Coin Collectors Society |
| BCCS | Barber Coin Collectors' Society |