| Valmacca | |
| Official Name: | Comune di Valmacca |
| Coordinates: | 45.1°N 43°W |
| Region: | Piedmont |
| Province: | Alessandria (AL) |
| Mayor: | Gianni Boselli |
| Area Total Km2: | 12.6 |
| Population Footnotes: | [1] |
| Population Total: | 1040 |
| Population As Of: | 31 December 2013 |
| Population Demonym: | Valmacchesi |
| Elevation M: | 97 |
| Postal Code: | 15040 |
| Area Code: | 0142 |
Valmacca is a comune (municipality) in the Province of Alessandria in the Italian region Piedmont, located about 70km (40miles) east of Turin and about 20km (10miles) north of Alessandria in an area of plain on the right of the Po River at the confluence of the Rotaldo and the Gattola.
Valmacca borders the following municipalities: Bozzole, Breme, Frassineto Po, Pomaro Monferrato, Sartirana Lomellina, and Ticineto.