Al-Jazira, also known as Jazirat Aqur or Iqlim Aqur, was a province of the Rashidun, Umayyad and Abbasid caliphates, spanning at minimum most of Upper Mesopotamia, divided between the districts of Diyar Bakr, Diyar Rabi'a and Diyar Mudar. At times, the province included Mosul, Arminiya and Adharbayjan as sub-provinces.