| Abbreviation | Definition |
|---|---|
| CGAUX | United States Coast Guard AUXiliary |
| CGC | Child Guidance Council |
| CGCAA | Coconut Grove Community Action Agency |
| CGCB | Clinical Grants and Contracts Branch |
| CGF | Child Growth Foundation |
| CGF | Coast Guard Foundation |
| CGHS | Coalfield Genealogical & Historical Society |
| CGIAR | Consultative Group on International Agricultural Research |
| CGS | Citizens for Global Solutions |
| CGS | Common Ground Sanctuary |
| CHA | Chicago Heart Association |
| CHA | ChildHelp USA, Inc. |
| CHAA | Canadian Harvard Aircraft Association |
| CHAC | Cradle of Hope Adoption Center |
| CHACI | Cradle of Hope Adoption Center, Inc. |
| CHADD | Children and Adults with Attention- Deficit/ Hyperactivity Disorder |
| CHAF | Cambridge Housing Assistance Fund |
| CHAG | Comunity Health Awareness Group |
| CHAI | Clinton Health Access Initiative |
| CHAM | Christian Health Association of Malawi |