| Acronym | Definition |
|---|
| GCAH | General Commission on Archives and History (United Methodist Church) |
| GCAH | Gentle Care Animal Hospital (Raleigh, NC) |
| GCAH | General Contractors Association of Hawaii (Honolulu, HI) |
| GCAH | Gabinete das Nações Unidas para a Coordenação dos Assuntos Humanitários (Portuguese: UN Office for the Coordination of Humanitarian Affairs) |
| GCAH | Gold Coast Animal Hospital (Chicago, IL) |
| GCAH | Graduate Committee on the Arts and Humanities (University of Colorado at Boulder) |
| GCAH | Groton City Animal Hospital (New York) |
| GCAH | Green Cove Animal Hospital (Green Cove Springs, FL) |
| GCAH | Grant Cynnal Addysg a Hyfforddiant (Welsh: Education and Training Support Grant) |
| GCAH | Greenburgh Citizens for Affordable Housing (New York) |
| GCAH | Ghana Center for Attitudinal Healing |