| CEDR | Cancer Epidemiology Data Repository 
| Others |
| CEDR | Cedar River Railroad
| Others |
| CEDR | Cedar River Railroad Company
| Others |
| CEDR | Center for Educational Development and Research
| Others |
| CEDR | Center for Environmental Design Research
| Others |
| CEDR | Center on Evaluation Development and Research
| Others |
| CEDR | Centre for Effective Dispute Resolution
| Others |
| CEDR | Clatsop Economic Development Resources
| Others |
| CEDR | Clinical and Experimental Dental Research
| Others |
| CEDR | Clinical Emergency Data Registry
| Others |
| CEDR | Complex Event Detection and Response
| Others |
| CEDR | Comprehensive Epidemiologic Data Resource
| Others |
| CEDR | Comprehensive Evaluation of the Development Results
| Others |
| CEDR | Conference Europeenne des Directeurs des Routes
| Others |
| CEDR | Conference of European Directors of Roads
| Others |