Olabiyi Durojaiye (8 February 1933 – 24 August 2021) was elected Senator for the Ogun East constituency of Ogun State, Nigeria at the start of the Nigerian Fourth Republic, running on the Alliance for Democracy (AD) platform. He took office on 29 May 1999. He also used the tribal title Otunba as a pre-nominal style, thereby highlighting his position as a chieftain of the Yoruba people.