| Retiers | |
| Native Name: | (Gallo) |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Retiers (Ille-et-Vilaine).svg |
| Coordinates: | 47.9142°N -1.3806°W |
| Insee: | 35239 |
| Postal Code: | 35240 |
| Arrondissement: | Fougères-Vitré |
| Canton: | La Guerche-de-Bretagne |
| Mayor: | Thierry Restif[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Roche-aux-Fées |
| Elevation Min M: | 41 |
| Elevation Max M: | 120 |
| Area Km2: | 41.38 |
Retiers (in French pronounced as /ʁətje/; ; Gallo: Restier) is a commune in the Ille-et-Vilaine department of Brittany in northwestern France.
Inhabitants of Retiers are called restériens in French.