Walter Gemma
| Gemma | |
|---|---|
| Walter Gemma on display at the Finnish Aviation Museum | |
| Type | Radial aero engine | 
| National origin | Czechoslovakia | 
| Manufacturer | Walter Aircraft Engines | 
| First run | c.1934 | 
The Walter Gemma was a Czechoslovakian nine-cylinder, air-cooled, radial aero engine that was developed and manufactured in the early 1930s by Walter Aircraft Engines.