| Jallaucourt | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason Jallaucourt.svg |
| Arrondissement: | Sarrebourg-Château-Salins |
| Canton: | Le Saulnois |
| Insee: | 57349 |
| Postal Code: | 57590 |
| Mayor: | François Florentin[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | CC du Saulnois |
| Coordinates: | 48.8397°N 6.3872°W |
| Elevation M: | 260 |
| Elevation Min M: | 217 |
| Elevation Max M: | 295 |
| Area Km2: | 8.41 |
Jallaucourt (pronounced as /fr/;) is a commune in the Moselle department in Grand Est in north-eastern France.