Lake Vidraru (romanian Lacul Vidraru) is an artificial lake in Romania. It was created in 1965 by the construction of the Vidraru Dam on the Argeș River.
It lies in the shadow of the Făgăraș Mountains. A village lies submerged at the bottom of this lake.
Vidraru Lake is a reservoir lake created in 1965 on the Arges River for electricity production. It has 465 million cubic metres of water, with a length of 10.3 km and a width of 2.2 km, thus accumulating a total area of 870 hectares and maximum depth of 155 metres.