RCHA
| Acronym | Definition |
|---|---|
| RCHA | Royal Canadian Horse Artillery |
| RCHA | Rutgers Center for Historical Analysis (New Jersey) |
| RCHA | Ranch Cutting Horse Association (Holliday, TX) |
| RCHA | Registered Care Homes Association (UK) |
| RCHA | Rolette County Housing Authority (Rolette, ND) |