Teodora de Rossano was a tenth-century nun and abbess who lived in southern Italy. Born around 910 to a noble but impoverished family in Cosenza, she chose a life of religious devotion at a young age. She entered the monastery of Saint-Opoli, which had been established by Nil of Rossano, a Greek monk fleeing iconoclast persecution. Known for her intense prayer and austere lifestyle, she was eventually appointed to lead the convent of Saint Anastasia, which she helped develop into a significant religious center in Calabria.