| Millonfosse | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Millonfosse 59.svg |
| Arrondissement: | Valenciennes |
| Canton: | Saint-Amand-les-Eaux |
| Insee: | 59403 |
| Postal Code: | 59178 |
| Mayor: | Gérald Thuru[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CA Porte du Hainaut |
| Coordinates: | 50.436°N 3.391°W |
| Elevation M: | 17 |
| Elevation Min M: | 14 |
| Elevation Max M: | 20 |
| Area Km2: | 3.48 |
Millonfosse is a commune in the Nord department in northern France.[2]