| Abbreviation | Definition |
|---|---|
| CCSM | Community Corporation of Santa Monica |
| CCSNYS | Council of Community Services of New York State |
| CCSRI | Canadian Cancer Society Research Institute |
| CCSS | Cass Community Social Services |
| CCSS | Children's Corrective Surgery Society |
| CCSSE | Challenger Center for Space Science Education |
| CCSYR | Catholic Community Services of York Region |
| CCTA | Coastal Carolina Taxpayers Association |
| CCUSA | Catholic Charities United States of America |
| CCUSA | Christian Charities, United States of America |
| CCVT | Canadian Centre for Victims of Torture |
| CCWA | Christian Child Welfare Association |
| CCWA | Clayton Creek Water Association |
| CCWA | Cleveland Council on World Affairs |
| CCWA | Conodoguinet Creek Watershed Association |
| CCWA | Cooks Creek Watershed Association |
| CCWA | Corey Creek Watershed Association |
| CCWC | Children's Center of Wayne County |
| CDAD | Community Development Advocates of Detroit |
| CDC | Citizens Democracy Corps |