| Saint-Germain-sur-Ille | |
| Native Name: | (Gallo) |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Saint-Germain-sur-Ille 35.svg |
| Coordinates: | 48.2497°N -1.6581°W |
| Insee: | 35274 |
| Postal Code: | 35250 |
| Arrondissement: | Rennes |
| Canton: | Melesse |
| Mayor: | Bertrand Legendre[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Val d'Ille-Aubigné |
| Elevation Min M: | 37 |
| Elevation Max M: | 100 |
| Area Km2: | 3.90 |
Saint-Germain-sur-Ille (in French pronounced as /sɛ̃ ʒɛʁmɛ̃ syʁ il/, literally Saint-Germain on Ille; Gallo: Saent-Jermaen-sur-Ill, Breton: Sant-Jermen-an-Il) is a commune in the Ille-et-Vilaine department of Brittany in northwestern France.
Inhabitants of Saint-Germain-sur-Ille are called germinois in French.