| Castelverrino | |
| Official Name: | Comune di Castelverrino |
| Coordinates: | 41.7667°N 38°W |
| Region: | Molise |
| Province: | Isernia (IS) |
| Mayor: | Antonio Pannunzio |
| Area Total Km2: | 6.2 |
| Population Footnotes: | [1] |
| Population Total: | 106 |
| Population As Of: | 30 June 2017 |
| Population Demonym: | Castelverrinesi |
| Elevation M: | 600 |
| Postal Code: | 86080 |
| Area Code: | 0865 |
Castelverrino is a comune (municipality) in the Province of Isernia in the Italian region Molise, located about 30km (20miles) northwest of Campobasso and about 25km (16miles) northeast of Isernia.