Asella is a town in central Ethiopia. Located in the Arsi Zone of the Oromia Region 126 km (78 mi) south from Addis Ababa, this town has a latitude and longitude of 7°57′N 39°7′E, with an elevation of 2,430 meters. Asella hosts an Asella Airport. Asalla was the capital of Arsi Province until that province was demoted to a Zone of Oromia with the adoption of the 1995 Constitution. It retains some administrative functions as the seat of the present Arsi Zone.

Oromia is a regional state in Ethiopia and the homeland of the Oromo people. Under Article 49 of Ethiopian Constitution, the capital of Oromia is Addis Ababa, also called Finfinne. The provision of the article maintains special interest of Oromia by utilizing social services and natural resources of Addis Ababa.