| Montrottier | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Montrottier (Rhône).svg |
| Arrondissement: | Lyon |
| Canton: | L'Arbresle |
| Insee: | 69139 |
| Postal Code: | 69770 |
| Mayor: | Michel Gouget[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Monts du Lyonnais |
| Coordinates: | 45.7908°N 4.4675°W |
| Elevation M: | 680 |
| Elevation Min M: | 460 |
| Elevation Max M: | 851 |
| Area Km2: | 23.1 |
Montrottier (in French pronounced as /mɔ̃tʁɔtje/) is a commune in the Rhône department in eastern France.