| Lac de Grangent | |
| Location: | Loire |
| Coords: | 45.45°N 19°W |
| Type: | artificial |
| Inflow: | Loire |
| Pushpin Map: | France Auvergne-Rhône-Alpes |
| Basin Countries: | France |
| Area: | 3.65km2 |
| Volume: | 66000000m2 |
| Elevation: | 420m (1,380feet) |
| Islands: | 1 |
Lac de Grangent is a lake in Loire, France. At an elevation of 420 m, its surface area is 3.65 km2.