Gaudentius of Rimini was a 4th-century bishop who served the early Christian community in Ariminum (modern Rimini). Born in Ephesus to a wealthy Christian family, he later moved to Rome, where he was ordained and consecrated as a bishop. He is credited with establishing the local church and ordaining Saint Marinus, the founder of San Marino. According to tradition, he died a martyr in 360 after opposing Arianism, either at the hands of a mob or imperial guards.