Lake Mboukou () is a freshwater lake in Epena District, Republic of the Congo.
It is a small lake located roughly 50 km to the southeast from Lake Tele at in the north-eastern area of the Republic of the Congo. Lake Mboukou is almost totally surrounded by forest except in its SW shore where the village of Mboukou is located.
The 1996 book Congo Journey, by the British travel writer Redmond O'Hanlon, mentions this lake as a place with strong spirits according to the local people.
This lake belongs to the wetland area of the Réserve Communautaire du Lac Télé/Likouala-aux-Herbes. It is a Ramsar site since 18 July 1998.