Saint Urban, pope (222-230), came to The See in the year that Heliogabalus was assassinated and served under the reign of Emperor Alexander Severus. He had been preceded by Callixtus I and was followed by Pontian. He is mentioned by Eusebius in his history and is named in an inscription in the Coemeterium Callisti, but of his life nothing is known. The Catholic Church's Breviary (25 May) speaks of his numerous converts, among whom were Valerianus, husband of Saint Cecilia, and his brother Tiburtius, and states that he suffered martyrdom and was buried in the Coemetarium Praetextati.

Feast day May 25.