| Piz Serenastga | |
| Elevation M: | 2874 |
| Prominence M: | 120 |
| Prominence Ref: | [1] |
| Parent Peak: | Piz Aul |
| Map: | Switzerland |
| Location: | Graubünden, Switzerland |
| Range: | Lepontine Alps |
| Coordinates: | 46.6336°N 9.1467°W |
Piz Serenastga is a mountain of the Swiss Lepontine Alps, situated near Vals in the canton of Graubünden. It is located north of Piz Aul.