Dimma is one of the woredas in the Gambela Region of Ethiopia. Part of the Anuak Zone, Dimma is bordered on the southeast by the Southern Nations, Nationalities and Peoples Region (SNNPR), on the southwest by the Akobo River which separates it from South Sudan, on the north by Gog (woreda), and on the northeast by the Mezhenger Zone. The major town in Dimma is Dimma.