Peter de Regalado was a 15th-century Spanish Franciscan priest and a prominent itinerant preacher. Born in Valladolid around 1390, he joined the Friars Minor at the age of 14. He became a central figure in the Observance, a movement dedicated to restoring the original simplicity and fervor of the Franciscan Order. Through his leadership and commitment to poverty, he helped implement significant disciplinary reforms across various Spanish friaries during his lifetime.