Margaret of Savoy was a 15th-century noblewoman and Dominican nun who served as the Marchioness of Montferrat. Born in Pinerolo around 1382, she was the daughter of Amadeo of Savoy and Catherine of Geneva. After her fifteen-year marriage to Theodore II ended with his death in 1418, she chose a religious life over further worldly pursuits. She eventually founded a monastery under the Dominican Order and lived as an abbess in Alba until her death in 1464.