| Montigny-sur-Loing | |
| Commune Status: | Commune |
| Coordinates: | 48.3336°N 2.745°W |
| Insee: | 77312 |
| Postal Code: | 77690 |
| Arrondissement: | Fontainebleau |
| Canton: | Nemours |
| Mayor: | Sylvie Monchecourt[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CC Moret Seine et Loing |
| Elevation Min M: | 49 |
| Elevation Max M: | 136 |
| Area Km2: | 9.20 |
Montigny-sur-Loing (in French pronounced as /mɔ̃tiɲi syʁ lwɛ̃/, literally Montigny on Loing) is a commune in the Seine-et-Marne department in the Île-de-France region in north-central France. Montigny-sur-Loing station has rail connections to Montargis, Melun and Paris.
Inhabitants are referred to as Montignons in French.