| Abbreviation | Definition |
|---|---|
| CSL | Conservation South Luangwa |
| CSMO | Conservation of Sculptures Monuments Objects |
| CSOS | Conservation of Sculpture and Objects Studio |
| CSP | Conservation Security Program |
| CSP | Conservation Stewardship Program |
| CTA | Conservation Technical Assistance |
| CTF | Conservation Trust Fund |
| CTNC | Conservation Trust for North Carolina |
| CTNC | Conservation Trust of North Carolina |
| CTPC | Center for Tropical Plant Conservation |
| CTPR | Conservation Trust of Puerto Rico |
| CUFC | Canadian Urban Forest Conference |
| CUFN | Canadian Urban Forest Network |
| CUFS | Canadian Urban Forest Strategy |
| CUL | See you later |
| CUVA | Conservation Use Valuation Assessment |
| CUVA | Conservation Use Value Assessment |
| CUWCD | Clearwater Underground Water Conservation District |
| CVCF | Credit Valley Conservation Foundation |
| CVCP | Champlain Valley Conservation Partnership |