Dona Maria Amália de Mendoça Rolim de Moura Barreto (27 April 1832 – 1880) was a daughter of Dona Ana de Jesus Maria de Bragança, Infanta of Portugal and Marchioness of Loulé, and Dom Nuno José de Moura Barreto, 1st Duke of Loulé. Born in Paris, she was a member of a cadet line of the Portuguese royal family and a sister of Ana Carlota de Mendoça Rolim de Moura Barreto.
Maria Amalia married Dom João Salazar de Mascarenhas, but the marriage ended and she became a nun. They had a son Augusto Salazar e Bragança.