| Abbreviation | Definition |
|---|---|
| CD | Democratic Republic of the Congo |
| CEB | Cebu City |
| CEDC | Clemson Engineers for Developing Countries |
| CESNU | Conseil économique et social des Nations unies (in French) United Nations Economic and Social Council |
| CF | Central African Republic |
| CG | Congo |
| CH | Confederazione Helvetica (Switzerland) |
| CHDC | C?ng Ho?? D??n Ch? (Democratic Republic of ....) |
| CHDC | C?ng Hoà Dân Ch? (Democratic Republic of ....) |
| CHE | Switzerland (ISO Country code) |
| CHILE | Consumer Health Information Links For Everyone |
| CHN | China |
| CI | Cote d'Ivoire (Ivory Coast) |
| CIS | Commonwealth of Independent States |
| CIV | Cote d'Ivore |
| CJ | CHRIST JESUS; duh !! |
| CJK | China, Japan, and Korea |
| CK | Cook Islands |
| CL | Chile |
| CM | Cameroon |