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 NadiGibee . The administrative center of this woreda is Limmu Inariya(Town); other towns include Ambuye and BabuChora Botor woreda was separated from Limmu Kosa.

The altitude of this woreda ranges from 1200 to 3020 meters above sea level. Rivers include the Awetu and the Dembi; notable landmarks include Lake Cheleleki and the Bolo Caves. Protected areas include the Tiro Boter Becho and Babia Folla forests, which cover 938.22 square kilometers. A survey of the land in this woreda shows that 34.9% is arable or cultivable (24.6% was under annual crops), 20% pasture, 39.7% forest, and the remaining 15.4% is considered degraded or built-up areas. Fruits and sugar cane are important cash crops.[1] Coffee is another important cash crop of this woreda. Over 50 square kilometers are planted with this crop.

Industry in the district includes 57 Farmers Associations with 32,194 members and 19 Farmers Service Cooperatives with 17,962 members. Limmu Kosa has 71 kilometers of dry-weather and 111 all-weather road, for an average of road density of 75.3 kilometers per 1000 square kilometers. About 75% of the urban and 5.9% of the rural population have access to drinking water.