| Dreieckhorn | |
| Photo Size: | 285 |
| Elevation M: | 3811 |
| Prominence M: | 192 |
| Prominence Ref: | [1] |
| Parent Peak: | Aletschhorn |
| Location: | Valais, Switzerland |
| Range: | Bernese Alps |
| Map: | Switzerland |
| Coordinates: | 46.478°N 8.02°W |
The Dreieckhorn is a mountain of the Bernese Alps, overlooking Konkordiaplatz in the canton of Valais. In the southeast-ridge of the Dreieckhorn, which is leading to the Olmenhorn, is located the subpeak Kleines Dreieckhorn (3639 m).