| Abbreviation | Definition |
|---|---|
| CRRC | California Refuse Recycling Council |
| CRT | Continuously Regenerating Trap |
| CRTC | Composite Recycling Technology Center |
| CRU | Climate Research Unit |
| CRVD | Current Recycling Voltage Detector |
| CS | Contaminated Site |
| CSAPR | Cross State Air Pollution Rule |
| CSB | Central Silk Board |
| CSB | CET (Center for Ecological Technology) Show Barn |
| CSC | Cost of Saved Carbon |
| CSDI | Communication for Sustainable Development Initiative |
| CSDW | Clean, Safe Drinking Water |
| CSEE | Civil Structural and Environmental Engineering |
| CSEM | Center for Safety and Environmental Management |
| CSEO | Center for Science and Environmental Outreach |
| CSER | Corporate Social and Environmental Responsibility |
| CSES | Crop Soil Environmental Sciences |
| CSFEE | Chinese Society For Environmental Economics |
| CSG | Catchment Stakeholder Group |
| CSGHGR | Climate Strategy of Glass House Gas Reduction |