| Abbreviation | Definition |
|---|---|
| CASDI | Club Autos Sport Défi Inc |
| CASG | Chicagoland Association of S Gaugers |
| CASI | Club Atlético San Isidro |
| CASL | Club Atletico San Lorenzo |
| CASLA | Club Argentino Sin Libertadores de America |
| CASO | Club aquatique du Sud Ouest |
| CAT | Clubs of Alcoholics in Treatment |
| CBAC | Camana Bay Aquatic Club |
| CBAC | Central Bucks Aquatic Club |
| CBAC | Chesapeake Bay Aquatic Club |
| CBAC | Club Belge des Anciennes Citro??n |
| CBAC | Club Belge des Anciennes Citroën |
| CBBC | Cala Bassa Beach Club |
| CBBC | Columbia Basin Badger Club |
| CBBJ | Club Belge de Bâle et du Jura |
| CBCB | Cannabis Buyers Club Berkeley |
| CBCB | Cannabis Buyers Club Of Berkeley |
| CBCC | Canoe Brook Country Club |
| CBCC | Chiba Bayside Cycling Club |
| CBCD | Certified Bank Club Director |