| Ligny | |
|---|---|
 | |
| Location | |
| Country | Belgium |
| Physical characteristics | |
| Source | |
| • location | Wagnelée |
| Mouth | |
• location | Mazy at a place called Falnuée |
• coordinates | 50°30′17″N 4°40′11″E / 50.50478°N 4.66975°E |
| Basin features | |
| Progression | Orneau → Sambre → Meuse → North Sea |
| River system | Meuse |
The Ligny is a stream in Belgium, a tributary of the Orneau on the right bank. Its waters eventually join the Meuse via the Sambre.