| Montessaux | |
| Commune Status: | Commune |
| Coordinates: | 47.7417°N 6.5667°W |
| Insee: | 70361 |
| Postal Code: | 70270 |
| Arrondissement: | Lure |
| Canton: | Mélisey |
| Mayor: | René Demange[1] |
| Term: | 2020 - 2026 |
| Elevation Min M: | 315 |
| Elevation Max M: | 350 |
| Area Km2: | 3.05 |
Montessaux (in French pronounced as /mɔ̃tɛso/) is a commune in the Haute-Saône department in the region of Bourgogne-Franche-Comté in eastern France.