| Abbreviation | Definition |
|---|---|
| CPRA | Canadian Polystyrene Recycling Association |
| CPRL | Container and Packaging Recycling Law |
| CPRS | Carbon Pollution Reduction Scheme |
| CPS | Can't Provide Safety |
| CPTED | Crime Prevention Through Environmental Design |
| CR | Carbon Dioxide Removal |
| CR&R | Coal Rules and Regulations |
| CRA | Carolina Recycling Association |
| CRAAP | Concerned Residents Against Airport Pollution |
| CRAID | Caversham Residents Against Inappropriate Development |
| CRAP | Carbon Residue and Associated Products |
| CRAPPER | Compact Rotating Aerobic Pollution Prevention Excreta Reducer |
| CRC | Community Recycling Centre |
| CRC | Conservation Resource Centre |
| CRCA | Cataraqui Region Conservation Authority |
| CRCE | Canadian Renewable Conservation Expense |
| CRCE | Centre for Radiation Chemical and Environmental |
| CRCF | Colorado River Citizens Forum |
| CRCF | Costa Rican Conservation Foundation |
| CRCS | Catalyst Regeneration Control System |