| Mouais | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Mouais (Loire-Atlantique).svg |
| Arrondissement: | Châteaubriant-Ancenis |
| Canton: | Guémené-Penfao |
| Insee: | 44105 |
| Postal Code: | 44590 |
| Mayor: | Yvan Menager[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Châteaubriant-Derval |
| Coordinates: | 47.6964°N -1.6433°W |
| Elevation Min M: | 9 |
| Elevation Max M: | 61 |
| Area Km2: | 9.93 |
Mouais (in French pronounced as /mwɛ/; Gallo: Móaè, in French pronounced as /mwə/; Breton: Lanvoe) is a commune in the Loire-Atlantique department in western France.
It is possible that the toponym comes from the hagionym Moë, an obscure Breton saint.
The town is located on the northern edge of the department, on the right bank of the river Chère, which forms most of its southern border.