| Abbreviation | Definition |
|---|---|
| BHBP | Billy Hussein Boxing Promotions |
| BIFG | Boxing Is For Girls |
| BKB | Bare Knuckle Boxing |
| BKB | Big Knockout Boxing |
| BOB | Body Opponent Bag |
| BP | Belt Punch |
| BRA | Boxing Records Archive |
| BTBC | Boxing Tribune Blue Corner |
| BTBC | British Thai Boxing Council |
| BTF | Boxing Task Force |
| BUI | Boxing Union of Ireland |
| BVB | British Vintage Boxing |
| BWAA | Boxing Writers Association of America |
| C | Challenger |
| CBOI | Chess Boxing Organisation of India |
| CCFB | Combined Chinese and Filipino Boxing |
| CFC | Card Fighters Clash |
| CHC | Canadian Heavyweight Champion |
| CKB | Cardio Kick Boxing |
| CPBC | Canadian Professional Boxing Council |