| Moncenisio | |
| Official Name: | Comune di Moncenisio |
| Coordinates: | 45.2°N 65°W |
| Region: | Piedmont |
| Metropolitan City: | Turin (TO) |
| Mayor Party: | Civic List |
| Mayor: | Bruno Perotto |
| Area Total Km2: | 4.50 |
| Population Total: | 30 |
| Population As Of: | 1-1-2017[1] |
| Population Demonym: | Moncenisino(i) or Ferrerese(i) |
| Elevation M: | 1460 |
| Saint: | St. George |
| Day: | Last Sunday in April |
| Postal Code: | 10050 |
| Area Code: | 0122 |
Moncenisio (Monsnis, Moueini, French: Montcenis) is the smallest comune (municipality) in the Metropolitan City of Turin in the Italian region of Piedmont, located about 60 km west of Turin, on the border with France, in Val Cenischia.
Moncenisio borders the following municipalities: Val-Cenis (France), Novalesa, and Venaus.