| Acronym | Definition |
|---|
| GCHA | Greenlawn-Centerport Historical Association (New York) |
| GCHA | Greater Cincinnati Handball Association |
| GCHA | Georgia Children's Health Alliance (Atlanta, GA) |
| GCHA | Gold Coast Hockey Association |
| GCHA | Golf Club Harrachov |
| GCHA | Greater Cleveland Hospital Association |
| GCHA | Gain Cell Headphone Amplifier (PS Audio) |
| GCHA | Grid Computing and High Availability |
| GCHA | Gotham City Heart Attack (band) |
| GCHA | Glan Clwyd Hospital Audiology |
| GCHA | Greater Cleveland Healthcare Association |
| GCHA | General Championship Hall Affairs |
| GCHA | German Curly Horse Association |
| GCHA | Gulf Coast Heritage Association, Inc. (Florida) |
| GCHA | Golfclub Hamburg-Ahrensburg eV (Germany) |