| Montagny | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Montagny (Loire).svg |
| Arrondissement: | Roanne |
| Canton: | Charlieu |
| Insee: | 42145 |
| Postal Code: | 42840 |
| Mayor: | Marcel Peuillon[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Roannais Agglomération |
| Coordinates: | 46.0336°N 4.2367°W |
| Elevation M: | 490 |
| Elevation Min M: | 316 |
| Elevation Max M: | 542 |
| Area Km2: | 25.57 |
Montagny (in French pronounced as /mɔ̃taɲi/) is a commune in the Loire department in central France.