Montbrun is the name or part of the name of the following communes in France:
Montbrun, Lot, in the Lot department Montbrun, Lozère, in the Lozère department Montbrun-Bocage, in the Haute-Garonne department Montbrun-des-Corbières, in the Aude department Montbrun-Lauragais, in the Haute-Garonne department Montbrun-les-Bains, in the Drôme department Saint-Léger-de-Montbrun, in the Deux-Sèvres department
See also Louis-Pierre Montbrun