| Abbreviation | Definition |
|---|---|
| BMSC | Brotherhood of Mayhem Social Club |
| BNBC | Basketball New Business Club |
| BNBC | Blackburn North Bowling Club |
| BNC | Buyers' Networking Club |
| BNCC | Bina Nusantara Computer Club |
| BNOC | Baku Nobel Oil Club |
| BNSC | Bloomington Normal Swim Club |
| BNSC | Boise Nationals Soccer Club |
| BNWC | Bristol Nomads Windsurfing Club |
| BOBC | Big Ole Bike Club |
| BOCC | British Officers Cricket Club |
| BOLCC | Bowling Old Lane Cricket Club (Bradford, England) |
| BONC | Bicyclists Of Nevada County |
| BORMC | Brothers of Resistance Motorcycle Club |
| BOSC | Bordon Oakhanger Sports Club |
| BOTC | Birmingham Obedience Training Club |
| BOTC | Bloomington Obedience Training Club |
| BOVC | Banbridge Old Vehicle Club |
| BPBC | Black Phoenix Beat Club |
| BPCC | The British-Polish Correspondence Club |