Adiabene (East Syriac ecclesiastical province)

Metropolitanate of Adiabene (Syriac: Hadyab ܚܕܝܐܒ) was an East Syriac metropolitan province of the Church of the East between the 5th and 14th centuries, with more than fifteen known suffragan dioceses at different periods in its history. Although the name Hadyab normally connoted the region around Erbil and Mosul in present-day Iraq, the boundaries of the East Syriac metropolitan province went well beyond the Erbil and Mosul districts. Its known suffragan dioceses included Beth Bgash (the Hakkari region of eastern Turkey) and Adarbaigan (the Ganzak district, to the southeast of Lake Urmi), well to the east of Adiabene proper.