| Marsaneix | |
| Arrondissement: | Périgueux |
| Canton: | Isle-Manoire |
| Commune: | Sanilhac |
| Insee: | 24258 |
| Postal Code: | 24750 |
| Coordinates: | 45.0997°N 0.7853°W |
| Elevation Min M: | 144 |
| Elevation Max M: | 257 |
| Area Km2: | 23.85 |
| Population: | 1130 |
| Population Date: | 2019 |
| Population Footnotes: | [1] |
Marsaneix (pronounced as /fr/; oc|Marçanés) is a former commune in the Dordogne department in Nouvelle-Aquitaine in southwestern France. On 1 January 2017, it was merged into the new commune Sanilhac.[2]