The Nigerian National Assembly delegation from Oyo comprises three Senators representing Oyo South, Oyo Central, Oyo North and fourteen Representatives representing the following federal constituencies: Ona-Ara/Egbeda, Iseyin/Kajola/Iwajowa/Itesiwaju, Ibadan North- East/South- East, Lagelu/Akinyele, Ibarapa East/Ido, Ibadan North, Oluyole, Atisbo/Saki East/Saki West, Ibadan North West/South West, Ibarapa Central/Ibarapa North, Afijio/Atiba/Oyo East/Oyo West, Ogo-oluwa/Surulere Oluyole, Ogbomosho-North/South/Orire, and Olurunssogo/Orelope/Irepo.
*Omotayo Paul Oyetunji, who was elected on 26 January 2008 in a bye election, replaced Segun Moses Oladimeji who was assassinated on 14 September 2007.