| Acronym | Definition |
|---|
| OCHA➣Office for the Coordination of Humanitarian Affairs (United Nations) |
| OCHA➣Oregon Council for Hispanic Advancement |
| OCHA➣Orange County Housing Authority (California USA) |
| OCHA➣Office of Consumer Health Assistance |
| OCHA➣Off Campus Housing Assistance |
| OCHA➣Orange County Homeowners Association |
| OCHA➣Ohio Health Care Association |
| OCHA➣Orleans County Historical Association (Albion, NY) |
| OCHA➣Oxford Citizens Housing Association Ltd. (UK) |
| OCHA➣Olmsted County Hockey Association (now Rochester Mite Hockey Association) |
| OCHA➣Oregon Clearing House Association |