| Gresin | |
| Arrondissement: | Chambéry |
| Canton: | Bugey savoyard |
| Insee: | 73127 |
| Postal Code: | 73240 |
| Commune: | Saint-Genix-les-Villages |
| Coordinates: | 45.6108°N 5.6833°W |
| Elevation Min M: | 238 |
| Elevation Max M: | 730 |
| Area Km2: | 5.01 |
| Population: | 342 |
| Population Date: | 2019 |
| Population Footnotes: | [1] |
Gresin is a former commune in the Savoie department in the Auvergne-Rhône-Alpes region in south-eastern France. On 1 January 2019, it was merged into the new commune Saint-Genix-les-Villages.[2]