María Magdalena Teresa Ruiz Guiñazú (15 February 1931 – 6 September 2022)[1] was an Argentine writer and journalist.

[2] Her father was Enrique Ruiz Guiñazú, an Argentine politician who is best remembered for his spell as Minister of Foreign Affairs, International Trade and Worship in the 1940s.

She was one of 16 women journalists who received an award from the Minister of Home Affairs, General Albano Harguindeguy, in August 1980.

From her radio show, she was the first to give voice to the Mothers of the Plaza de Mayo during the dictatorship government.

During the democracy, president Raúl Alfonsín elected her to become an active member of the National Commission on the Disappearance of Persons or CONADEP.