The history of Osun State is deeply rooted in the history of the Yoruba people of southwestern Nigeria. The region contains some of the most important centres of Yoruba civilisation, including Ile-Ife, widely regarded in Yoruba tradition as the spiritual and ancestral source of Yoruba civilisation.
Long before the creation of modern Nigeria, the area that now forms Osun State contained numerous kingdoms, towns and settlements. Ile-Ife developed as a major political, spiritual and artistic centre, while Ijesa, Iwo, Ede, Ila, Ikire, Osogbo, Ejigbo and other communities developed their own traditional institutions.
Yoruba traditional political organisation was based around kingdoms headed by rulers known by different titles. In Ile-Ife, the traditional ruler is the Ooni of Ife; in Ijesaland, the Owa Obokun is the principal traditional ruler; while Osogbo is traditionally associated with the Ataoja of Osogbo.
The River Osun became one of the most important cultural features of the region. In Yoruba traditional religion, Osun is associated with a powerful female spiritual figure, and the annual Osun-Osogbo Festival remains one of the most internationally recognised Yoruba cultural festivals.