Osmanlıspor was founded as Ankara Belediye Spor Kulübü (Ankara Municipality Sport Club) in 1978.
On September 15, 2009, Osmanlıspor was demoted from the Turkish Super League by "The Professional Football Disciplinary Committee (PFDK) over its unsportsmanlike relationship with Ankaragücü, which was deemed contrary to sporting competitiveness."[REF]