Limmu Kosa is one of the Districts in the Oromia Region of Ethiopia. It is named in part after the former kingdom of Limmu-Ennarea, whose territories included the area this woreda now covers. Part of the Jimma Zone, Limmu Kosa is bordered on the south by Kersa, on the southwest by Mana, on the west by Gomma, on the northwest by the Didessa River which separates it from the Illubabor Zone, on the north by Limmu Sakka, on the northeast by the Gibe River which separates it from the west shewa zone and the Southern Nations, Nationalities and Peoples Region, on the east by Sokoru, and on the southeast by Tiro Afeta. The administrative center of this woreda is Limmu Inariya(Town); other towns include Ambuye and Babu. Chora Botor woreda was separated from Limmu Kosa.