| Bagnoli del Trigno | |
| Official Name: | Comune di Bagnoli del Trigno |
| Coordinates: | 41.7°N 41°W |
| Region: | Molise |
| Province: | Isernia (IS) |
| Area Total Km2: | 36.7 |
| Population Footnotes: | [1] |
| Population Total: | 708 |
| Population As Of: | 31 December 2017 |
| Population Demonym: | Bagnolesi |
| Elevation M: | 660 |
| Saint: | St. Vitalis of Rome |
| Day: | 20 August |
| Postal Code: | 86091 |
| Area Code: | 0874 |
Bagnoli del Trigno is a comune (municipality) in the Province of Isernia in the Italian region Molise, located about 25km (16miles) northwest of Campobasso and about 20km (10miles) northeast of Isernia.
Bagnoli del Trigno borders the following municipalities: Civitanova del Sannio, Duronia, Pietracupa, Salcito.
Sights include the Romanesque, built in the 13th-14th centuries between two rock spurs.