| Abbreviation | Definition |
|---|---|
| CCS | Catholic Cross-cultural Services |
| CCVC | Catholic Charities Volunteer Corps |
| CCWB | Compassionate Care Without Barriers |
| CCWM | Catholic Charities West Michigan |
| CDA | Charity and Development Appeal |
| CECO | County Employees Charitable Organization |
| CEPUDO | Capacitación, Educación, Producción, Unificación, Desarollo, Organozación |
| CFCT | Colyer Fergusson Charitable Trust |
| CFFC | Canadian Food For Children |
| CFGB | Canadian FoodGrains Bank |
| CGAP | Charitable Giving and Philanthropy |
| CGP | Charitable Gift Planners |
| CHAMP | Charitable Hour a Month Plan |
| CHARITY | Charities |
| CHOICES | Christ Humility Opportunity Integrity Charity Education and Success |
| CHS | Canadian Hearing Society |
| CHS-SCO | Canadian Hearing Society-la Société Canadienne de l’Ouïe |
| CHS-SCO | Canadian Hearing Society-la Société Canadienne de lOuïe |
| CIACO | Chicagoland Italian American Charitable Organization |
| CIAO | Charitable Italian American Organization |