| Abbreviation | Definition |
|---|---|
| BCCS | Bucks County Choral Society |
| BCCS | Butler Cave Conservation Society |
| BCDS | Bellingham Country Dance Society |
| BCES | Bulgarian Comparative Education Society |
| BCGS | Baltimore Classical Guitar Society |
| BCGS | Black Country Geological Society |
| BCGS | Boston Classical Guitar Society |
| BCHS | Berkeley County Historical Society |
| BCHS | Buffalo County Historical Society |
| BCHS | Butler County Humane Society |
| BCLA | British Comparative Literature Association |
| BCMS | Bexar County Medical Society |
| BCMS | Bible Churchmen's Missionary Society |
| BCMS | Boston Chamber Music Society |
| BCMS | Boulder County Medical Society |
| BCQS | Belgian Construction Quality Society |
| BCS | British Cartographic Society |
| BCS | British Computing Society |
| BCSA | Book Collectors Society of Australia |
| BCSA | Border Collie Society of America |