| Lac Gentau | |
| Location: | Pyrénées-Atlantiques, Pyrénées |
| Coords: | 42.8481°N -0.4872°W |
| Pushpin Map: | Pyrenees |
| Basin Countries: | France |
| Area: | 0.093km2 |
| Max-Depth: | 20m (70feet) |
| Elevation: | 1947m (6,388feet) |
Lac Gentau is a lake in Pyrénées-Atlantiques, Pyrénées, France. At an elevation of 1947.3 m, its surface area is 0.093 km2.