Olga Delfina Emilia Cabrera Hansen (January 13, 1935) is a distinguished lawyer from the city of Rosario, victim of Argentina's last civilian military dictatorship, human rights activist and a person who worked the most, since the legal field, for the reconstruction of what happened in the clandestine detention center and the Information Service (SI) of the police headquarters of Santa Fe, Argentina, in Rosario during that period (El Pozo de Rosario)