Mary Josephine Nash Baldwin (born 1947) is an Irish historian living in Catalonia.

She received her doctorate there in 1977 in the specialty of modern history, with the thesis La mujer en las organizaciones políticas de izquierdas en España, 1931-1939.

In 1982, she was one of the founders of the Women's Historical Research Center at the University of Barcelona.

[3] In 1984, she won the Emilia Pardo Bazán prize for her work Presencia y protagonismo.

[6] She is one of the directors of Arenal, Journal of Women's History [es], has collaborated with UNESCO, and was president of the Spanish Association for Women's History Research (AEIHM) from 1991 to 1997.