Adda Berga is a woreda in Oromia Region, Ethiopia. Part of the West Shewa Zone, Adda Berga is bordered on the south by Walmara, on the southwest by Ejerie, on the west by Meta Robi, and on the north and east by the Muger River which separates it from the north Shewa Zone. Towns in Adda Berga include Enchini, Muger and Reji.