| Abbreviation | Definition |
|---|---|
| CROC | Clinical Research Oversight Council |
| CRPI | Council for Responsible Public Investment |
| CRRC | Cool Roof Rating Council |
| CRS | Council of Residential Specialists |
| CRSC | Chesapeake Region Safety Council |
| CRSCA | Council on Research Scholarship and Creative Activity |
| CRSCA | Council on Research Scholarship Creative Activity |
| CRSD | Council Rock School District |
| CRSNG | Conseil de recherches en sciences naturelles et en génie du Canada |
| CRWC | Connecticut River Watershed Council |
| CRWC | Crooked River Watershed Council |
| CSAC | Catholic School Advisory Council |
| CSAC | Community Support Advisory Councils |
| CSAF | Council on Smallholder Agricultural Finance |
| CSAO | Council of Senior Administrative Officers |
| CSAP | Council of State Association Presidents |
| CSBA | Council of State Bioscience Associations |
| CSBC | Chesapeake Sustainable Business Council |
| CSBP | Council on Sustainable Biomass Production |
| CSC | China Scholarship Council |