| Acronym | Definition |
|---|
| CCNS | Center for Cognitive Neuroscience (various locations) |
| CCNS | Critical Care Clinical Nurse Specialist |
| CCNS | Convention Collective Nationale du Sport (French: National Sports Collective Convention) |
| CCNS | Concerned Citizens for Nuclear Safety |
| CCNS | Cape Cod National Seashore |
| CCNS | Center for Computational NanoScience (Worcester Polytechnic Institute; Massachusetts) |
| CCNS | Canadian Congress of Neurological Sciences |
| CCNS | Certified Clinical Nurse Specialist |
| CCNS | Computer Controlled Navigation System |
| CCNS | Acute/Critical Care Clinical Nurse Specialist (AACN Certification Corporation) |
| CCNS | Chicago City News Service |
| CCNS | California Citrus Nursery Society |