| Montbrison-sur-Lez | |
| Commune Status: | Commune |
| Arrondissement: | Nyons |
| Canton: | Grignan |
| Insee: | 26192 |
| Postal Code: | 26770 |
| Mayor: | Patrice Mery[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 44.4378°N 5.0203°W |
| Elevation Min M: | 249 |
| Elevation Max M: | 744 |
| Area Km2: | 12.83 |
Montbrison-sur-Lez is a commune in the Drôme department in southeastern France.