MNAC

MNAC may refer to:


 * Museu Nacional de Arte Contemporânea in Lisbon, Portugal


 * National Museum of Contemporary Art (Muzeul Naţional de Artă Contemporană) in Bucharest, Romania
 * Museu Nacional d'Art de Catalunya in Barcelona, Catalonia, Spain

MnAc may refer to:
 * Manganese(III) acetate