Demetrian was a medieval monk and bishop from Cyprus who served the Christian Church during the 9th and 10th centuries. Born in the village of Sika to a priest, he entered monastic life following the death of his wife. After leading a monastery for forty years, he eventually accepted the role of bishop for the ancient city of Chytri. He is primarily remembered for his efforts to free local Christians from captivity during Saracen invasions.