| Monthault | |
| Native Name: | (Gallo) |
| Commune Status: | Commune |
| Coordinates: | 48.5119°N -1.18°W |
| Insee: | 35190 |
| Postal Code: | 35420 |
| Arrondissement: | Fougères-Vitré |
| Canton: | Fougères-2 |
| Mayor: | Roger Buffet[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Fougères Agglomération |
| Elevation Min M: | 114 |
| Elevation Max M: | 197 |
| Area Km2: | 8.20 |
Monthault (in French pronounced as /mɔ̃to/; Breton: Brennaod; Gallo: Montaut) is a commune in the Ille-et-Vilaine department in Brittany in northwestern France.
Inhabitants of Monthault are called Monthaltais in French.
Eustace de Montaut, Anglo-Norman baron in England