| Mainvillers | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason de la ville de Mainvillers (Moselle).svg |
| Arrondissement: | Forbach-Boulay-Moselle |
| Canton: | Faulquemont |
| Insee: | 57430 |
| Postal Code: | 57380 |
| Mayor: | Raymond Hauser[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | District Urbain de Faulquemont |
| Coordinates: | 49.0208°N 6.5444°W |
| Elevation M: | 225 |
| Elevation Min M: | 248 |
| Elevation Max M: | 296 |
| Area Km2: | 6.7 |
Mainvillers (; Lorraine Franconian Maiwilla) is a commune in the Moselle department in Grand Est in north-eastern France.