| Castagnole Monferrato | |
| Official Name: | Comune di Castagnole Monferrato |
| Coordinates: | 44.9667°N 26°W |
| Region: | Piedmont |
| Province: | Asti (AT) |
| Frazioni: | Barcara, Valenzani, Valvinera |
| Mayor: | Enzo Baraldi |
| Area Total Km2: | 17.3 |
| Population Footnotes: | [1] |
| Population Total: | 1270 |
| Population As Of: | 31 December 2010 |
| Population Demonym: | Castagnolesi |
| Elevation M: | 232 |
| Saint: | St. Anne |
| Day: | 26 July |
| Postal Code: | 14030 |
| Area Code: | 0141 |
Castagnole Monferrato is a comune (municipality) in the Province of Asti in the Italian region Piedmont, located about 50km (30miles) east of Turin and about 11km (07miles) northeast of Asti.