Maria of Portugal, Hereditary Princess of Parma

Infanta Maria of Guimarães (12 August 1538 – 9 July 1577) was a Portuguese infanta, daughter of Infante Duarte, Duke of Guimarães (son of King Manuel I of Portugal), and Isabel of Braganza. She married Alessandro Farnese, Duke of Parma and Piacenza on 11 November 1565. She was Hereditary Princess of Parma by marriage.