Abay Chomen is one of the 180 woredas in the Oromia Region of Ethiopia. Part of the Misraq Welega Zone, Abay Chomen is bordered on the south by Lake Finchawa (created when a dam flooded the Comen Swamp, on the southwest by Jimma Horo, on the northwest by Amuru Jarte, on the north by the Abay River which separates it from the Amhara Region, and on the east and south by Guduru. The woreda capital is Finichawa; other towns in Abay Chomen include Finichawa Camp.