| Grassen | |
| Native Name Lang: | de |
| Topo Map: | Swiss Federal Office of Topography swisstopo |
| Elevation M: | 2946 |
| Prominence M: | 146 |
| Prominence Ref: | [1] |
| Parent Peak: | Wichelplanggstock |
| Map: | Switzerland |
| Subdivision2 Type: | Cantons |
| Country: | Switzerland |
| Parent: | Urner Alps |
| Coordinates: | 46.7634°N 8.4483°W |
The Grassen is a mountain of the Urner Alps, located east of the Titlis in Central Switzerland. The summit is the tripoint between the cantons of Bern, Obwalden and Uri.