| Abbreviation | Definition |
|---|---|
| CDFU | Communication Development Foundation of Uganda |
| CDFU | Communication for Development Foundation Uganda |
| CDPF | Civic Development and Partnership Foundation |
| CDRF | California Dairy Research Foundation |
| CDRF | China Development Research Foundation |
| CDRF | Christopher and Dana Reeve Foundation |
| CDTF | Commercial Driver Training Foundation |
| CDWF | Citizen Drug Watch Foundation |
| CDWF | Connie Davis Watson Foundation |
| CEEF | Children Education Empowerment Foundation |
| CEEF | Consumer Energy Education Foundation |
| CEF | Cabrillo Education Foundation |
| CEF | Camas Educational Foundation |
| CEF | Carmel Education Foundation |
| CEF | Carpinteria Education Foundation |
| CEF | The Campaign Ethics Foundation |
| CEFD | Construction Education Foundation of Delaware |
| CEFI | Calayan Educational Foundation Inc |
| CEFO | Catholic Education Foundation of Ontario |
| CEIF | Cincinnati Eye Institute Foundation |