| CNCS | Canadian National Communication Conference 
| Others |
| CNCS | Cardinal Newman Catholic School
| Others |
| CNCS | Center for Navigation and Communication Sciences
| Others |
| CNCS | Center for Nonlinear and Complex Systems
| Others |
| CNCS | Central Navigation and Control School
| Others |
| CNCS | Central Nebraska Community Services
| Others |
| CNCS | Cherokee Nation Construction Services
| Others |
| CNCS | Chicago North Chinese School
| Others |
| CNCS | Cochleovestibular Nerve Compression Syndrome
| Others |
| CNCS | Cold Neutron Chopper Spectrometer
| Others |
| CNCS | College of Natural and Computational Sciences
| Others |
| CNCS | Communication Navigation Control System
| Others |
| CNCS | Confederated Northern City States
| Others |
| CNCS | Corporation for National and Community Service
| Others |
| CNCS | Corporation for National and Community Services
| Others |
| CNCS | Corporation for National Community Service
| Others |