Parc Montsouris is a public park in the 14th arrondissement of Paris, on the rive gauche (left bank of the River Seine.) The park is fifteen hectares in area, and it is styled as an English garden, a genre popular since the early 19th century. The park was ordained by Napoleon III and Baron Haussmann as part of a plan to add green areas to Paris.

The park is bounded to the south by the Cité Internationale Universitaire de Paris (CIUP), to the north and east by residential flats, and to the west by the residential district along the avenue Général Leclerc.

The water reservoir in the northeast portion of the park covers an historic entrance to the Paris catacombs.^{[citation needed]}