Isiaka Adetunji Adeleke ((Listenⓘ); 15 January 1955 – 23 April 2017) was a Nigerian politician, he was a two time senator who represented Osun West from 2007 to 2011 under the Peoples Democratic Party (PDP) and was elected again under the banner of the All Progressives Congress in 2015.

[3] He was born in Enugu State and spent his early years in the city until the beginning of the Nigerian civil war.

He started his primary education at Christ Church School, Enugu, before moving to Ibadan.

[8] Isiaka Adetunji Adeleke was appointed to committees on Upstream Petroleum Resources, Integration and Cooperation, Housing and Air Force.

[11] Adeleke, before his death was allegedly eyeing the governorship seat in Osun ahead of the 2018 election in the state.