| Abbreviation | Definition |
|---|---|
| CRV | Crotone, Italy |
| CRW | Yeager Airport, Charleston, West Virginia USA |
| CRX | Corinth, Mississippi USA |
| CRY | Carlton Hill, Western Australia, Australia |
| CRZ | Chardzhou, Russia |
| CSG | Columbus Metropolitan Airport, Columbus, Georgia USA |
| CSH | Cape Sarichef, Alaska USA |
| CSI | Casino, New South Wales, Australia |
| CSJ | Cape St. Jacques, Vietnam |
| CSK | Cap Skirring, Senegal |
| CSL | San Luis Obispo, California USA |
| CSM | CLINTON SHERMAN Airport, Sherman, Oklahoma |
| CSN | Carson City Airport, Carson City, Nevada USA |
| CSQ | Creston, Iowa USA |
| CSX | Changsha, Mainland China |
| CSY | Cheboksary, Russia |
| CTA | Catania, Italy |
| CTB | Cut Bank, Montana USA |
| CTC | Catamarca, CA, Argentina |
| CTD | Chitre, Panama |