Stephana de Quinzanis was a 15th-century Italian mystic who belonged to the Third Order of St. Dominic. Born in Orzinuovi in 1457, she lived a life defined by deep spiritual experiences, including receiving the stigmata at age fourteen and experiencing a mystical marriage. She eventually established a community of Third Order Sisters in Soncino, where she served as the first prioress. Recognized for her prophetic abilities and healing gifts, she became a significant spiritual figure in the Lombardy region during the late Renaissance.