| Massongy | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Massongy.svg |
| Arrondissement: | Thonon-les-Bains |
| Canton: | Sciez |
| Insee: | 74171 |
| Postal Code: | 74140 |
| Mayor: | Sandrine Deturche[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Thonon Agglomération |
| Coordinates: | 46.3161°N 6.3337°W |
| Elevation Min M: | 415 |
| Elevation Max M: | 490 |
| Area Km2: | 9 |
| Website: | Massongy.fr |
Massongy (in French pronounced as /masɔ̃ʒi/) is a commune in the Haute-Savoie department in the Auvergne-Rhône-Alpes region in south-eastern France.