Biodun Ogunbiyi is a Nigerian politician from Ogun State. He was a member first of the All Nigeria Peoples Party, then in 2006 was one of the founders of the breakaway Democratic People's Party.
In October 2004, convoys carrying Ogun State Governor Gbenga Daniel and his wife were attacked in Ilaro, Ogun State. Governor Daniel accused the former governor of the state, Aremo Olusegun Osoba, of organizing the attack. Ogunbiyi described the allegation as "sheer deceit and hypocrisy". In March 2006, Ogunbiyi said that the poor rating of Ogun State in the States Economic Empowerment and Development Strategy report showed that Governor Gbenga Daniel's administration thrived on propaganda. Chief Ogunbiyi described a November 2008 dispute between Ogun State Governor Gbenga Daniel and Senator Iyabo Obasanjo-Bello as "not only an embarrassment but a disgrace to the peace-loving people of the Gateway State of Nigeria."
In 2006 he became a founding member of the Democratic People's Party (DPP), along with Alhaji Attahiru Bafarawa, former Sokoto State governor and a 2007 Presidential candidate, and retired general Jeremiah Useni.
In December 2008 he was named Chairman of the Interim Executive Committee of the Democratic Peoples Party at a meeting where Jeremiah Useni was suspended indefinitely for abuse of power and non-performance.Jeremiah Useni rejected the decision, and claimed that Ogunbiyi had been expelled from the party in August 2008, after openly declaring for the Peoples Democratic Party (PDP) at a rally in Sokoto. Useni later claimed that the Sokoto State government was using the faction to withdraw all DPP court cases against Sokoto Governor Magatakarda Wamakko.