Abda of Dair-Koni was a 5th-century priest and abbot belonging to the Church of the East. Born in Kynai, he was raised by the Christian church after being abandoned by his mother. Following his religious education, he was ordained and went on to establish both a school and a monastery at Dair Qoni. During his ministry, he acted as a teacher to Mar Abba and was known for converting followers of Marcionism to his faith before eventually retiring to Tella.