| Mercy-le-Bas | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason Mercy-le-Bas 54.svg |
| Arrondissement: | Briey |
| Canton: | Pays de Briey |
| Insee: | 54362 |
| Postal Code: | 54960 |
| Mayor: | Serge Ventrucci[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CC Cœur du Pays-Haut |
| Coordinates: | 49.3844°N 5.7525°W |
| Elevation M: | 293 |
| Elevation Min M: | 242 |
| Elevation Max M: | 318 |
| Area Km2: | 8.23 |
Mercy-le-Bas (in French pronounced as /mɛʁsi lə ba/) is a commune in the Meurthe-et-Moselle department in north-eastern France.