Ceccardus of Luni was a 9th-century bishop of Luni, located in present-day Liguria, Italy. He is identified in historical documents as Sicheradus Silitraldi, a name suggesting he may have descended from a Byzantine family. His life ended in 860 during a violent raid on his city by Viking forces led by chieftains such as Hastein and Bjorn Ironside. Recognized as a martyr, he is celebrated for his faith and remains a significant religious figure in the region.