| Piz da l'Acqua | |
| Elevation M: | 3126 |
| Prominence M: | 318 |
| Prominence Ref: | [1] |
| Parent Peak: | Piz Quattervals |
| Map: | Alps |
| Location: | Lombardy, Italy Graubünden, Switzerland |
| Range: | Livigno Alps |
| Label Position: | right |
| Coordinates: | 46.6107°N 10.1374°W |
| Listing: | Alpine mountains above 3000 m |
Piz da l'Acqua is a mountain of the Livigno Alps, located on the border between Italy and Switzerland. The northern side of the mountain (Graubünden) is part of the Swiss National Park. The southern side of the mountain (Lombardy) is part of the Stelvio National Park. The mountain overlooks the Lago di Livigno on its eastern side.