The Nigerian National Assembly delegation from Oyo comprises three Senators representing Oyo South, Oyo Central, and Oyo North. It has 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.
<small>*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.</small>