Antonia da Firenze was a 15th-century Italian religious figure born in Florence. After the passing of her husband in 1428, she dedicated herself to the Third Order of Saint Francis. She served as a leader for a female community in Foligno before moving to L'Aquila in 1433 to oversee a monastery. Seeking a more disciplined lifestyle, she eventually joined the Poor Clares at the Monastery of Corpus Christi, where she served as abbess under the guidance of John of Capistrano.