| Meaning | Category |
| Calvary Satellite Network | Community->Religion |
| Carson City, Nevada USA | Regional->Airport Codes |
| Comcast Sports Network | Community->Media |
| Comunidad Sudamericana de Naciones (Spanish, South American Community of Nations) | International->Spanish |
| Confederate States Navy | Governmental->US Government |
| Confédération des Syndicats Nationaux | International->French |
| Consejo de Seguridad Nuclear | International->Spanish |
| Cougar School Network | Computing->Networking |
| Customer Services Network | Business->General |
Click here to submit an acronym.
