Lac Lioson

46°23′11″N 7°7′43″E / 46.38639°N 7.12861°E / 46.38639; 7.12861Primary outflowsHongrin (river) going to the Lac de l'HongrinBasin countriesSwitzerlandSurface area7 ha (17 acres)Surface elevation1,848 m (6,063 ft)

Lac Lioson is a lake in the municipality of Ormont-Dessous, near Les Mosses, in the canton of Vaud, Switzerland. Its surface area is 7 ha (17 acres).

The lake is used for fishing and ice diving.

• List of mountain lakes of Switzerland
• Lac de l'Hongrin

• Lac de Lioson diving photos