Abda of Dair-Koni , (c. 450 A.D) was a priest and abbot of the Church of the East

Church of the East

The Church of the East tāʾ d-Maḏnḥāʾ), also known as the Nestorian Church, is a Christian church, part of the Syriac tradition of Eastern Christianity. Originally the church of the Persian Sassanid Empire, it quickly spread widely through Asia...

.

He was born at Kynai also known as Qani (where the apostle Saint Mari

Saint Mari

Saint Mari was converted by Saint Addai. He is said to have had Mar Aggai as his spiritual director. He is also believed to have done missionary work around Nineveh, Nisibis, and along the Euphrates, and is said to have been one of the great apostles to Syria and Persia. He and Addai are credited...

 was buried) of an immoral women who exposed her child to the elements. He was subsequently educated by the Christian church and ordained

Ordination

In general religious use, ordination is the process by which individuals are consecrated, that is, set apart as clergy to perform various religious rites and ceremonies. The process and ceremonies of ordination itself varies by religion and denomination. One who is in preparation for, or who is...

 a priest

Priesthood (Catholic Church)

The ministerial orders of the Catholic Church include the orders of bishops, deacons and presbyters, which in Latin is sacerdos. The ordained priesthood and common priesthood are different in function and essence....

. He founded a monastery and a school at Dair Qoni. In this capacity, he served as the teacher of Mar Abba

Mar Abba

Aba I or Mar Abba the Great was the Patriarch of the Church of the East at Seleucia-Ctesiphon from 540 to 552. He introduced to the church the anaphora of Theodore of Mopsuestia and Nestorius, supplanting the previous liturgical rite of Addai and Mari...

. After a career in which he successfully converted several Marcionites, he retired to Tella on the Serser River.

No feast day commemorating this saint has been found to have existed.