Sophia Olelkovich Radziwill (Saint Sophia of Slutsk, Princess Sophia of Slutsk; May 1, 1585 – March 19, 1612) was a Lithuanian Orthodox Christian saint. She was the last descendant of the family Olelkovich-Slutsk (princes of Slutsk and Kopyl) who were descended from Prince Algirdas. She was canonized by the Orthodox Church in 1983.