| Greenhorn Mountains | |
| Country: | United States |
| State: | Oregon |
| District: | Grant, Baker |
| District Type: | Counties |
| Topo Map: | Vinegar Hill |
| Topo Maker: | USGS |
| Range Coordinates: | 44.7139°N -118.5617°W |
| Elevation Ft: | 8133 |
| Map: | Oregon |
| Map Size: | 220 |
The Greenhorn Mountains are a small mountain range in Grant and Baker counties in the U.S. state of Oregon. They are part of the Blue Mountains.[1]