The Lac de Vouglans is the reservoir of the hydro-electric power station at Vouglans on the river Ain in the département of Jura in the region of Bourgogne-Franche-Comté in eastern France.

The lake lies on Jurassic rock crushed into north to south ridges by the Alpine orogeny.

The old village of Vouglans was displaced by its construction in 1968 by Électricité de France (EDF).

Some buildings of the Carthusian monastery of Vaucluse were also moved to make way for the rising waters and to save them from demolition.

The lake is arranged for tourism with view-points scattered through the woods which cover the hillsides along its shores and places set up for bathing and boating.