Dr. Olusegun Agagu was born at Iju-Odo, Okitipupa Local Government Area of Ondo State on February 16, 1948. He attended St. Luke’s (Paul’s) Primary School, Okitipupa, between 1954 and 1957. He crossed over to Ebenezer African Church School, Oke-Ado, Ibadan, Oyo State in 1958 and later to Baptist Primary School, Kano in 1959. He returned to Ebenezer African Church School, Oke-Ado in 1960. For his secondary education, little Agagu went to Ibadan Grammar School between 1961 and 1967. He gained admission to University of Ibadan in 1968 and graduated in 1971. Between 1973 and 1974, he was at University of Texas, Austin, Texas, USA. He was again at University of Ibadan between 1976 and 1978.
In 1971, Olusegun Agagu joined Gulf Oil Company as Geologist; he worked with the company till 1972 when he resigned his appointment to further his education. Between 1974 and 1975, he was a Research Scientist at Bureau of Economic Geology, Austin, Texas, USA, he returned there between 1979 and 1980. He was a Senior Lecturer at University of Ibadan between 1981 and 1988. Dr. Olusegun Agagu is a director at Brink Jones and Co Ltd, and Faagol Intruments Ltd. both at Ibadan since 1981. He is also a director at Petramin Nigeria Limited, Ibadan since 1987 and Oluwa Glass Company Plc since 1990.
He has been a Consultant on several Geological Projects and Investigations both in Nigeria and the USA since 1981. He was Deputy Governor between 1991 and 1993 in Ondo State. He was elected executive Governor of Ondo State in 2003. he vacated the Governorship position in the state immediately his appeal against the earlier judgment that declared Dr. Olusegun Mimiko winner of the 2007 gubernatorial election in the state failed on February 23, 2009. Dr. Olusegun Agagu is married and the marriage is blessed with a son and two daughters.
