| Flastroff | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason de la ville de Flastroff (Moselle).svg |
| Arrondissement: | Thionville |
| Canton: | Bouzonville |
| Insee: | 57215 |
| Postal Code: | 57320 |
| Mayor: | Roland Schneider[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Bouzonvillois-Trois Frontières |
| Coordinates: | 49.3675°N 6.5336°W |
| Elevation M: | 220 |
| Elevation Min M: | 214 |
| Elevation Max M: | 307 |
| Area Km2: | 8.38 |
Flastroff (pronounced as /fr/; ; Lorraine Franconian: Flooschtroff) is a commune in the Moselle department in Grand Est in north-eastern France.
Localities of the commune: Zeurange (German: Zeringen).