Maria de Fátima de Bivar Velho da Costa (June 26, 1938 – May 23, 2020) was a Portuguese writer. She was born in Lisbon. She was awarded the Camões Prize in 2002. She took part in the Portuguese Feminist Movement with Maria Isabel Barreno and Maria Teresa Horta (the Three Marias). Her best written work is a collection of feminist writings titled "New Portuguese Letters", which were published in 1972.