Mirab Armachiho or West Armachiho is one of the woredas in the Amhara Region of Ethiopia. This woreda is named after "Armachiho", a province in northwestern Ethiopia along the border with Sudan and south of the Tekezé River. Located at the northwestern point of the Semien Gondar Zone, Mirab Armachiho is bordered on the south by Metemma, on the west by Sudan, on the north by the Tigray Region, on the northeast by Tegeda, and on the east by Tach Armachiho. Towns in Mirab Armachiho include Abderafi. Mirab Armachiho was part of former Sanja woreda.