Bule Hora Town (formerly Hagere Mariam, older, alternative names were Alga, Kuku) is a town in southern Ethiopia. Located on the paved Addis Ababa-Moyale highway, in the West Guji Zone of the Oromia Region. It is the largest town in this zone mainly inhabited by the Guji Oromo. It has a latitude and longitude of 5°35′N 38°15′E / 5.583°N 38.250°E and an altitude of 1716 meters above sea level.
An orthodox church dedicated to Mary (Mariam) was buildt in the early 1900. The name Hagere Mariam was introduced by the Amhara sometimes before 1934. In 1936 Kenyazmach Tekle Giyorgis, a nephew of Ras Desta Damtew, was the chief of the town. It was occupied by the Italians on 22 July 1936, who renamed it "Alghe". They rebuilt the village and constructed a fort nearby; the Italians also bestowed honors and powers to a local Guji chief.
In the following decades, Hagere Mariam became isolated: a group of Swedish missionaries traveling to the Burji in March 1950 brought the first motorized vehicles seen in the town since the Italian occupation. A Norwegian Evangelical Mission was established at Hagere Mariam on 15 August of the same year, with the goal of reaching the Guji. Its founding leader was Karl Bogetvedt who worked from a little rented house inside the town, with dwelling, school and clinic in the same building. The mission station in Hagere Mariam continued into the 1980s.
Bule Hora is the largest town in Bule Hora woreda.
The 2007 national census reported a total population of 27,820 for Bule Hora Town, of whom 14,519 were men and 13,301 were women. 6,507 households and 6,246 housing units were counted. The town was divided into three urban kebele.