| Montagna in Valtellina | |
| Official Name: | Comune di Montagna in Valtellina |
| Coordinates: | 46.1833°N 63°W |
| Region: | Lombardy |
| Province: | Sondrio (SO) |
| Mayor: | Barbara Baldini |
| Area Total Km2: | 48 |
| Population Footnotes: | [1] |
| Population Total: | 3059 |
| Population As Of: | 31 December 2010 |
| Population Demonym: | Montagnoni |
| Elevation M: | 567 |
| Postal Code: | 23020 |
| Area Code: | 0342 |
Montagna in Valtellina is a comune (municipality) in the Province of Sondrio in the Italian region Lombardy, located about 100km (100miles) northeast of Milan and about 3km (02miles) northeast of Sondrio.
Montagna in Valtellina borders the following municipalities: Caspoggio, Chiuro, Faedo Valtellino, Lanzada, Piateda, Poggiridenti, Ponte in Valtellina, Sondrio, Spriana, Torre di Santa Maria, Tresivio.