Seru is a town in southeastern Ethiopia. Located in the Arsi Zone of the Oromia Region, this town has a latitude and longitude of 07°40′N 40°12′E / 7.667°N 40.200°E / 7.667; 40.200 with an elevation of 2302 meters above sea level. It is the administrative center of Seru woreda.
According to the Oromia Regional government, the only communication service currently in this town currently is radio communications for official purposes. Seru has no electricity. An UN-OCHA fact-finding mission visiting the town in 2003 described the community's water source as "quite original": the town has been built over a ground water reserve. The UN-OCHA report states, "Every compound has a hand-dug well, administration and school compounds as well. Water is reachable at 12 to 15 m depth". However, the report notes that the local people "have reported that the water table level has decreased over the past years."
Seru was mentioned in the Guido published by the Italians in 1938.
Based on figures from the Central Statistical Agency in 2005, Seru has an estimated total population of 3,082 of whom 1,422 are men and 1,660 are women. The 1994 census reported this town had a total population of 1,727 of whom 771 were men and 956 were women.