Lac Gentau
Lac Gentau reflecting the Pic du Midi d'Ossau
Lac Gentau
Location	Pyrénées-Atlantiques, Pyrénées
Coordinates	42°50′53″N 0°29′14″W / 42.84806°N 0.48722°W / 42.84806; -0.48722
Basin countries	France
Surface area	0.093 km2 (0.036 sq mi)
Max. depth	20 m (66 ft)
Surface elevation	1,947 m (6,388 ft)

Lac Gentau is a lake in Pyrénées-Atlantiques, Pyrénées, France. At an elevation of 1947.3 m, its surface area is 0.093 km².