Kokosa is one of the Aanaas in the Oromia of Ethiopia. Being part of the West Arsi Zone, Kokosa is bordered on the south and west by the Sidama Region, on the north by the Kofele, on the northeast by Dodola, and on the southeast by Nensebo. The administrative center of this woreda is Kokosa; other towns include Diki, Gata, BokoreHebano, Hogiso.