Lac de Roy is a lake in Haute-Savoie, France. It is located 2 km west of le Praz de Lys (Praz de Lys-Sommand?) ski resort, in the commune of Taninges.

Lac de Roy
Lac de Roy is located in France
Lac de Roy
Lac de Roy
LocationHaute-Savoie
Coordinates46°8′36″N 6°34′25″E / 46.14333°N 6.57361°E / 46.14333; 6.57361
TypeNatural freshwater lake
Basin countriesFrance
Max. length265 m (869 ft)
Max. width155 m (509 ft)
Surface elevation1,680 m (5,510 ft)