| Saint-Germain-le-Guillaume | |
| Commune Status: | Commune |
| Arrondissement: | Mayenne |
| Canton: | Ernée |
| Insee: | 53225 |
| Postal Code: | 53240 |
| Mayor: | Aude Roby[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Ernée |
| Coordinates: | 48.2067°N -0.8242°W |
| Elevation M: | 100 |
| Elevation Min M: | 73 |
| Elevation Max M: | 168 |
| Area Km2: | 13.23 |
Saint-Germain-le-Guillaume (in French pronounced as /sɛ̃ ʒɛʁmɛ̃ lə ɡijom/) is a commune in the Mayenne department in north-western France.[2]