Saint Severus (Italian: San Severo di Napoli) (died 409) was a bishop of Naples during the 4th and 5th centuries.

[1] To Severus is attributed the construction of the Battistero di San Giovanni in Fonte, associated with the basilica of Santa Restituta.

[1] Severus also built outside of the city walls the Basilica of San Fortunato, to which he translated the relics of his predecessor Maximus.

[4] His relics were translated from the Battistero di Napoli to the district known as Rione Sanità in the 9th century, to what became known as the Catacombs of San Severo.

Unfortunately, he died a few days later and the bath-keeper then demanded from the widow a large amount of money that he pretended the deceased man had owed him.