| Maretto | |
| Official Name: | Comune di Maretto |
| Coordinates: | 44.95°N 10°W |
| Region: | Piedmont |
| Province: | Asti (AT) |
| Mayor: | Felice Riccio |
| Area Total Km2: | 4.9 |
| Population Total: | 387 |
| Population As Of: | 31 May 2007[1] |
| Population Demonym: | Marettesi |
| Saint: | Our Lady of Mount Carmel and St. Michael |
| Day: | Last Sunday in July |
| Postal Code: | 14018 |
| Area Code: | 0141 |
Maretto is a comune (municipality) in the Province of Asti in the Italian region Piedmont, located about 30km (20miles) southeast of Turin and about 14km (09miles) northwest of Asti.
Maretto borders the following municipalities: Cortandone, Cortazzone, Monale, Roatto, and Villafranca d'Asti.