| Osasio | |
| Official Name: | Comune di Osasio |
| Coordinates: | 44.8667°N 43°W |
| Region: | Piedmont |
| Metropolitan City: | Turin (TO) |
| Mayor: | Silvio Cerutti |
| Area Total Km2: | 4.58 |
| Population Footnotes: | [1] |
| Population Total: | 928 |
| Population As Of: | 1-1-2017 |
| Population Demonym: | Osasiese(i) |
| Elevation M: | 241 |
| Saint: | Holy Trinity |
| Postal Code: | 10040 |
| Area Code: | 011 |
Osasio is a comune (municipality) in the Metropolitan City of Turin in the Italian region Piedmont, located about 25km (16miles) southwest of Turin.
Osasio borders the following municipalities: Castagnole Piemonte, Virle Piemonte, Carignano, Pancalieri, and Lombriasco.