| Abbreviation | Definition |
|---|---|
| CIYC | Catalina Island Yacht Club |
| CJBM | Club des Jeunes Bech Maacher |
| CJBM | Club des Jeunes de Biologie M??dicale |
| CJBM | Club des Jeunes de Biologie Médicale |
| CJBM | Club Jeu de Boules Middelburg |
| CJRTC | Carolinas Jack Russell Terrier Club |
| CJTC | Central Jersey Tri Club |
| CKBC | Cross Keys Boat Club |
| CKC | Canet Kite Club |
| CKC | Canine Kennel Club |
| CKC | Canoe Kayak Club |
| CKC | Canton Kayak Club |
| CKC | Carolina Kayak Club |
| CKC | China Kettlebell Club |
| CKC | CIFEJ Kids Club |
| CKC | Cold Killer Club |
| CKC | Contenintal Kennel Club |
| CKCC | Cape Kennedy Corvette Club |
| CKCC | Central Kentucky Camera Club |
| CKCD | Canoe Kayak Club Dyonisien |