Prosdocimus was a late 1st-century priest and the inaugural bishop of Padua. According to religious tradition, he was of Greek origin and arrived from Antioch after being sent by the Apostle Peter. He is credited with evangelizing the local region and establishing the parish church at Isola Vicentina. During his ministry, he performed the baptism of Justina of Padua, an event that remains a significant part of his historical and religious identity.