| Abbreviation | Definition |
|---|---|
| CHAMP | Californians Helping Alleviate Medical Problems |
| CHAMPS | Children Against Mines Programs |
| CHAP | Center for Historic Architecture and Preservation |
| CHAP | Christian Home educators Association of Pennsylvania |
| CHAP | Community Health Accreditation Program |
| CHAP | Community Health Aide Program |
| CHAS | Children's Hospice Association of Scotland |
| CHASE | Childrens Heart Association for Support and Education |
| CHATS | Community Home Assistance to Seniors (covering York Region and south Simcoe County) |
| CHATS | Community & Home Assistance to Seniors (covering York Region and south Simcoe County) |
| CHC | Catholic Health Care |
| CHC | Children's Hope Chest |
| CHC | Community Health Charities |
| CHC | Cops Helping Cops |
| CHCF | California HealthCare Foundation |
| CHCI | The Chimpanzee and Human Communication Institute |
| CHC-MI | Community Health Charities of Michigan |
| CHCO | Community Health Charities of Ohio |
| CHCS | Center for Health Care Strategies |
| CHCS | Chemical Hazards Communication Society |