| Mehaigne | |
| Mouth Coordinates: | 50.5282°N 5.215°W |
| Subdivision Type1: | Country |
| Mouth Elevation: | 85m (279feet) |
The Mehaigne (in French pronounced as /mə.ɛɲ/) is a river in Belgium. It is a left tributary to the Meuse. Its source is at Saint-Denis (La Bruyère), in the province of Namur, at an elevation of 180m (590feet).
The Mehaigne flows in a roughly eastern direction through a region called Hesbaye. It flows into the river Meuse in the municipality of Wanze at an elevation of 85m (279feet).