| Bas-Lieu | |
| Commune Status: | Commune |
| Arrondissement: | Avesnes-sur-Helpe |
| Canton: | Fourmies |
| Insee: | 59050 |
| Postal Code: | 59440 |
| Mayor: | Ghislain Francois[1] |
| Term: | 2020 - 2026 |
| Intercommunality: | Cœur de l'Avesnois |
| Coordinates: | 50.1347°N 3.9417°W |
| Elevation M: | 180 |
| Elevation Min M: | 146 |
| Elevation Max M: | 211 |
| Area Km2: | 7.62 |
Bas-Lieu (in French pronounced as /ba ljø/) is a commune in the Nord department in northern France.[2]