The Diocese of Galloway was one of the thirteen (after 1633 fourteen) dioceses of the pre-1689 Scottish Church. The Diocese was led by the Bishop of Galloway and was centred on Whithorn Cathedral.
In the Middle Ages, there was only one archdeacon, the Archdeacon of Galloway. There are three known deaneries, the deaneries of Desnes (Kirkcudbright), Farines (Wigtown) and Rhinns. The deaneries of Farines and Rhinns had been combined by the 16th century.