Waoromo ni kabila kubwa la watu (35,000,000) wa jamii ya Wakushi wanaoishi nchini Ethiopia, lakini pia Kenya na Somalia. Lugha yao ni Kioromo, kubwa kuliko zote kati ya lugha za Kikushi. Wengi wao ni Waislamu na Wakristo. Donald N. Levine (2014). Greater Ethiopia: The Evolution of a Multiethnic Society. University of Chicago Press. ISBN 978-0-226-22967-6.  Tsega Etefa, Integration and Peace in East Africa: A History of the Oromo Nation. New York: Palgrave Macmillan, 2012. ISBN 978-0-230-11774-7Script error: No such module "check isxn". Mohammed Hassan, The Oromo of Ethiopia, A History 1570–1860. Trenton: Red Sea Press, 1994. ISBN 0-932415-94-6Script error: No such module "check isxn". Herbert S. Lewis. A Galla Monarchy: Jimma Abba Jifar, Ethiopia 1830–1932. Madison: The University of Wisconsin Press, 1965. RIC Query – Ethiopia. INS Resource Information Center. Jalada kutoka ya awali juu ya 1 November 2005. Iliwekwa mnamo 8 October 2005. Temesgen M. Erena, Oromia: 'Civilisation, Colonisation And Underdevelopment, Oromia Quarterly, No.1, July 2002, Kigezo:ISSN.