| Montreuil-sur-Thonnance | |
| Commune Status: | Commune |
| Arrondissement: | Saint-Dizier |
| Canton: | Poissons |
| Insee: | 52337 |
| Postal Code: | 52230 |
| Mayor: | Hervé Lavenarde[1] |
| Term: | 2020 - 2026 |
| Coordinates: | 48.4597°N 5.2369°W |
| Elevation M: | 277 |
| Elevation Min M: | 234 |
| Elevation Max M: | 390 |
| Area Km2: | 8.09 |
Montreuil-sur-Thonnance (in French pronounced as /mɔ̃tʁœj syʁ tɔnɑ̃s/, literally Montreuil on Thonnance) is a commune in the Haute-Marne department in north-eastern France.