| Montagny-les-Lanches | |
| Commune Status: | Commune |
| Arrondissement: | Annecy |
| Canton: | Annecy-4 |
| Insee: | 74186 |
| Postal Code: | 74600 |
| Mayor: | Monique Pimonow[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Grand Annecy |
| Coordinates: | 45.8622°N 6.0456°W |
| Elevation Min M: | 525 |
| Elevation Max M: | 729 |
| Area Km2: | 4.38 |
Montagny-les-Lanches (pronounced as /fr/; frp|Montanyi-lé-Lanshe) is a commune in the Haute-Savoie department in the Auvergne-Rhône-Alpes region in south-eastern France.