Epulafquén Lake (Spanish pronunciation: [epuˈlafken]) is a lake in Neuquén Province, Patagonian Argentina.

This glacial lake is located in the Andean mountains in Lanín National Park.

It is separated from Huechulafquen Lake by a small channel formed due to the emergence of a small volcanic cone during the Holocene.

One of the lake's most prominent features is a large delta-formed lava flow from Huanquihue volcano on its southern shore.

This article about a place in Neuquén Province, Argentina is a stub.