| Piz Bacun | |
| Elevation M: | 3244 |
| Prominence M: | 306 |
| Prominence Ref: | [1] |
| Parent Peak: | Monte Disgrazia |
| Listing: | Alpine mountains above 3000 m |
| Range: | Bregaglia Range |
| Location: | Graubünden, Switzerland |
| Map: | Switzerland |
| Coordinates: | 46.3421°N 9.6822°W |
| First Ascent: | 27 August 1883 by Theodor Curtius and L. Bernus, guided by Christian Klucker and Johann Eggenberger |
Piz Bacun is a mountain of the Bregaglia Range (Alps), overlooking Vicosoprano in the Swiss canton of Graubünden. It is located between the Lake Albigna and the Forno Glacier.