| Montjean | |
| Commune Status: | Commune |
| Intercommunality: | Laval Agglomération |
| Arrondissement: | Laval |
| Canton: | Loiron-Ruillé |
| Mayor: | Vincent Paillard[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 48.0067°N -0.9581°W |
| Elevation M: | 50 |
| Elevation Min M: | 73 |
| Elevation Max M: | 121 |
| Area Km2: | 19.75 |
| Insee: | 53158 |
| Postal Code: | 53320 |
Montjean (in French pronounced as /mɔ̃ʒɑ̃/) is a commune in the Mayenne department in north-western France.
The river Oudon flows through the middle of the commune and crosses the village of Montjean.