Olusegun Agagu, Nigerian politician, 15th Governor of Ondo State (b. 1948)
Olusegun Kokumo Agagu (16 February 1948 – 13 September 2013) was a Nigerian politician who was Governor of Ondo State in Nigeria from 29 May 2003 until February 2009, when a court voided his re-election as governor on account of electoral irregularities. He was replaced as Governor of Ondo State by Olusegun Mimiko, his political rival, based on a court injunction.

His name, Olusegun, means "God is victorious". He was a member of the ruling People's Democratic Party (PDP).