| Acronym | Definition |
|---|
| CCNR | Conseil Canadien des Normes de la Radiotélévision (French: Canadian Broadcast Standards Council) |
| CCNR | Central Catchment Nature Reserve (Singapore) |
| CCNR | Canadian Coalition for Nuclear Responsibility |
| CCNR | Central Commission for Navigation on the Rhine |
| CCNR | Commission Centrale pour la Navigation du Rhin (French: Central Commission for Navigation on the Rhine) |
| CCNR | Call Completion on No Reply (ISDN) |
| CCNR | Call Completion No Reply |
| CCNR | Connecticut Conference on Natural Resources |
| CCNR | Canada Committee on Natural Resources |
| CCNR | Copper Cliff Nickel Refinery (Ontario, Canada) |
| CCNR | Conte Center for Neuroscience Research (Boston University; Boston, MA) |
| CCNR | Center for Complex Network Research at Northeastern University |
| CCNR | Completion of Call Not Responding (telecommunications) |