| Abbreviation | Definition |
|---|---|
| CISSA | Computing and Information Systems Students Association |
| CITA | Canadian Imaging Trade Association |
| CITA | Canadian Independent Telecommunications Association |
| CITA | Canadian Industrial Transportation Association |
| CITA | Cayman Islands Tourism Association |
| CITA | Central Iowa Trail Association |
| CITA | Cooperation and Innovation in Teachers Associations |
| CIVA | Conseil Interprofessionnel des Vins d'Alsace (French wine association) |
| CIWA | California Immigrant Workers Association |
| CIWA | Central Iowa Water Association |
| CJA | California Judges Association |
| CJCA | Cabin John Citizens Association |
| CJCA | Central Jersey Claims Association |
| CJCA | Christchurch Junior Cricket Association |
| CJCA | Cracker Jack Collectors Association |
| CJGA | Canadian Junior Golf Association |
| CJLEA | Colorado Japanese Language Education Association (Colorado) |
| CJSCA | Central Jersey Spinal Cord Association |
| CKA | Collegiate Kiteboarding Association |
| CKB | Corporation des Karabins de Bicêtre (French medical student association) |