| Lahaymeix | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason Lahaymeix (Meuse).svg |
| Arrondissement: | Commercy |
| Canton: | Dieue-sur-Meuse |
| Insee: | 55269 |
| Postal Code: | 55260 |
| Mayor: | Raymond Leclerc[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CC de l'Aire à l'Argonne |
| Coordinates: | 48.9397°N 5.4108°W |
| Elevation M: | 265 |
| Elevation Min M: | 240 |
| Elevation Max M: | 353 |
| Area Km2: | 12.7 |
Lahaymeix is a commune in the Meuse department in Grand Est in north-eastern France.