The Nadir Afonso Museum of Contemporary Art (MACNA) is a contemporary art museum located in the city of Chaves, Portugal. It was inaugurated in July 2016, and is housed in a building designed by the architect Álvaro Siza Vieira
The municipal museum administered by the Municipal Council of Chaves, permanently exhibits works by the painter Nadir Afonso and presents other contemporary works of art under temporary exhibitions.
Among other spaces, whose access may be restricted, the building consists of a foyer, a library, an auditorium for about a hundred people, a bar and four exhibition halls.