| Abbreviation | Definition |
|---|---|
| CEP | Community Environmental Project |
| CEP | Complete Environmental Products |
| CEPA | Centre for Environmental Policy and Advocacy |
| CEPC | Contractor Environmental Professional Coverage |
| CEPC | Contractors Environmental and Professional Coverage |
| CEPD | Caribbean Environmental Protection Division |
| CEPF | China Environmental Protection Foundation |
| CEPF | Critical Ecosystem Partnership Fund |
| CEPG | Centre for Environmental Policy and Governance |
| CEPG | Clean Electric Power Generation |
| CEPG | Coastal Ecology Protection Group |
| CEPG | Convergence Ecologique du Pays de Gardanne |
| CEPT | Center for Environmental Planning and Technology |
| CER | Carbon Emission Reduction |
| CER | Center for Environmental Research |
| CER | Centre for Environmental Rights |
| CER | Certified Emission Reduction |
| CERA | Canterbury Earthquake Recovery Authority |
| CERA | Center For Environmental Risk Assessment |
| CERA | Climate and Environmental Retrieval and Archive |