| Piz Tomül | |
| Other Name: | Wissensteinhorn |
| Elevation M: | 2946 |
| Prominence M: | 534 |
| Prominence Ref: | [1] |
| Parent Peak: | Rheinwaldhorn |
| Location: | Graubünden, Switzerland |
| Range: | Lepontine Alps |
| Map: | Switzerland |
| Coordinates: | 46.6234°N 9.2284°W |
Piz Tomül (also known as Wissensteinhorn) is a mountain of the Lepontine Alps, overlooking Vals in the canton of Graubünden. With an altitude of 2,946 metres above sea level, it is the highest summit of the range lying north of Tomülpass.