Maricourt Lake (French: Lac Maricourt, pronounced [lak maʁikuʁ]) is a freshwater body crossed by the Macho River in the north-eastern part of Senneterre within La Vallée-de-l'Or Regional County Municipality (RCM), in the administrative region of Abitibi-Témiscamingue, in Quebec, Canada.

The hydrographic slope of Lac Maricourt is accessible through a forest road (East–west direction) that passes on the north side of Maricourt Lake, passing through the Lake Wetetnagami Biodiversity Reserve; in addition, another forest road (East–west direction) serves the southern part of this Reserve and the west side of Lake Maricourt.

The surface of Lac Maricourt is usually frozen from early November to mid-May, however, safe ice circulation is generally from mid-November to mid-April.

From there, the current of Macho River crosses to the South-west a segment of 0.5 kilometres (0.31 mi) which connects to North shore of Berthelot Lake.

The toponym "lac Maricourt" was formalized on December 5, 1968, by the Commission de toponymie du Québec, when it was created.