| Mainsat | |
| Commune Status: | Commune |
| Arrondissement: | Aubusson |
| Canton: | Aubusson |
| Insee: | 23116 |
| Postal Code: | 23700 |
| Mayor: | David Schmidt[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CC Marche et Combraille en Aquitaine |
| Coordinates: | 46.0533°N 2.3875°W |
| Elevation M: | 610 |
| Elevation Min M: | 478 |
| Elevation Max M: | 670 |
| Area Km2: | 34.81 |
Mainsat (in French pronounced as /mɛ̃sa/; Occitan (post 1500);: Mançac) is a commune in the Creuse department in the Nouvelle-Aquitaine region in central France.
An area of farming and forestry, lakes and streams, comprising the village and several hamlets situated some 12miles northeast of Aubusson, at the junction of the D4, D19 and the D38 roads.