| Colleretto Giacosa | |
| Official Name: | Comune di Colleretto Giacosa |
| Coordinates: | 45.4333°N 54°W |
| Region: | Piedmont |
| Metropolitan City: | Turin (TO) |
| Frazioni: | Campana |
| Mayor: | Ernesto Marco |
| Area Total Km2: | 4.59 |
| Population Footnotes: | [1] |
| Population Total: | 586 |
| Population As Of: | 31 August 2021 |
| Population Demonym: | Collerettese(i) |
| Elevation M: | 280 |
| Saint: | San Felice |
| Day: | Third sunday of October |
| Postal Code: | 10010 |
| Area Code: | 0125 |
Colleretto Giacosa is a comune (municipality) in the Metropolitan City of Turin in the Italian region Piedmont, located about 40km (30miles) north of Turin.
Colleretto Giacosa borders the following municipalities: Samone, Loranzè, Pavone Canavese, Parella, and San Martino Canavese.
The poet, playwright and librettist Giuseppe Giacosa (1847 – 1906) was born in the then Colleretto Parella, the town changed its name after him.