Nijolė Sadūnaitė (born 22 July 1938, in Kaunas) is a clandestine Lithuanian Catholic nun of the Soviet period who worked with the Chronicle of the Catholic Church in Lithuania. In 1975 she faced three years of imprisonment for her efforts. She spent time imprisoned in the Mordavia and then in Boguchany. She reportedly faced a variety of abuses in this period, including torture. She wrote A Radiance in the Gulag about her experiences. In 2018, Sadūnaitė received the 'Lithuanian Freedom Award". She is the first female in history to receive the award.