| Castelnuovo Belbo | |
| Official Name: | Comune di Castelnuovo Belbo |
| Coordinates: | 44.8°N 33°W |
| Region: | Piedmont |
| Province: | Asti (AT) |
| Frazioni: | Gallinara |
| Mayor: | Francesco Nicola Garino |
| Area Total Km2: | 9.4 |
| Population Total: | 913 |
| Population As Of: | 1 January 2011[1] |
| Population Demonym: | Castelnovesi |
| Elevation M: | 122 |
| Postal Code: | 14043 |
| Area Code: | 0141 |
Castelnuovo Belbo (Castelneuv Belb) is a comune (municipality) in the Province of Asti in the Italian region Piedmont, located about 60km (40miles) southeast of Turin and about 20km (10miles) southeast of Asti.
Castelnuovo Belbo borders the following municipalities: Bergamasco, Bruno, Incisa Scapaccino, Mombaruzzo, and Nizza Monferrato.
Diémoz, France