| Abbreviation | Definition |
|---|---|
| CNDA | California Naturopathic Doctors Association |
| CNDA | Canadian Naval Divers Association |
| CNDA | Cherished Numbers Dealers Association |
| CNHP | Central Nova Horse and Pony Association |
| CNHP | Certified Natural Health Professionals |
| CNLA | Council of National Library Associations |
| CNNT | Council of Nephrology Nurses and Technicians |
| CNPBC | College of Naturopathic Physicians of British Columbia |
| CNS | Congress of Neurological Surgeons |
| CNTG | Confederation Nationale des Travailleurs de Guinee |
| COA | Commissioned Officers Association |
| COACH | Care Observe Act Challenge and Help |
| COAD | Correctional Officers Association of Delaware |
| COAE | Center of Organic Agriculture in Egypt |
| COAG | Constitutional Officers' Association of Georgia |
| COAM | Command Officers Association of Michigan |
| COBA | Central Oregon Builders Association |
| CoBA | Commercial Broadcasters Association |
| COBC | Chapter of Opticians of British Columbia |
| COBR | Consortium Of Bicycle Retailers |