| Lallaing | |
| Commune Status: | Commune |
| Image Coat Of Arms: | Blason ville fr Marpent (Nord).svg |
| Arrondissement: | Douai |
| Canton: | Sin-le-Noble |
| Insee: | 59327 |
| Postal Code: | 59167 |
| Mayor: | Jean-Paul Fontaine[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Douaisis Agglo |
| Coordinates: | 50.39°N 3.169°W |
| Elevation M: | 20 |
| Elevation Min M: | 16 |
| Elevation Max M: | 30 |
| Area Km2: | 5.99 |
Lallaing (in French pronounced as /lalɛ̃/) is a commune in the Nord department in northern France.[2]