| Acronym | Definition |
|---|
| RHCA➣Red Hat Certified Architect |
| RHCA➣Retiree Health Care Authority (New Mexico) |
| RHCA➣Reciprocal Health Care Agreement (various countries) |
| RHCA➣Red Hat Content Accelerator (web server) |
| RHCA➣Riparian Habitat Conservation Area (US Forestry Service) |
| RHCA➣Red Hook Civic Association (Brooklyn, NY) |