Ibadan Grammar School old students are successful in every profession imaginable,
including law, science, medicine, business, politics, and the creative arts. They are often leaders and innovators in their fields. 
Here are just some of the many prominent alumni making a difference in Nigeria and the world:

Mike Adenuga

CEO Globacom Michael Adenuga Jr is a Nigerian billionaire businessman, and the second-richest person in Nigeria. His company Globacom (GLO) is Nigeria's second-largest telecom operator.

Late Bola Ige

Former Minister James Ajibola Idowu Ige, SAN (13 September 1930 – 23 December 2001) was a Nigerian lawyer and politician. He also served as Federal Minister of Justice for Nigeria

Oba Gbadebo

Oba of Egbaland Adedotun Aremu Gbadebo III is the current Alake of Egba, a clan in Abeokuta, Nigeria. He has ruled since 2 August 2005. He is a retired Colonel.

Justice Ayotunde Phillips

Nigerian Jurist Hon Justice Ayotunde Phillips is a Nigerian Jurist. She was appointed the 14th Chief Judge of Lagos State in 2012 and retired from the position in June 2014.

Ken Nnamami

Politician Ken Ugwu Nnamani is a Nigerian politician who was President of the Senate of Nigeria from 2005 to 2007. A member of the People's Democratic Party (PDP).

Akin Mabogunje

Geographer Akin Mabogunje was the first African president of the International Geographical Union and the first African to be elected as a Foreign Associate of the United States National Academy of Sciences.

Late Alex Ibru

Publisher Alex Ibru (1 March 1945 – 20 November 2011) was a Nigerian businessman, founder and publisher of The Guardian newspaper, who was Minister of Internal Affairs from 1993 to 1995

Michael Omolewa

Nigerian Diplomat Michael Abiola Omolewa is a Nigerian scholar and civil servant. He served as the 32nd president of the General Conference of the United Nations Educational, Scientific and Cultural Organization (UNESCO).

Diete Spiff

Former Governor Alfred Papapreye Diete-Spiff was the first Military Governor of Rivers State, Nigeria after it was created from part of the old Eastern Region, Nigeria. He held office from May 1967 until July 1975

Late Olusegun Agagu

Former Governor 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.

Late Alex Ibru

Olu Sanu Ambassador Ambassador Sanu's career in the Foreign Service spanned 25 years during which he served as Ambassador of Nigeria to Ethiopia, Belgium, USA, China, Australia, New Zealand, the Pacific Island of Vanuatu and Papua New Guinea.

Late Ayo Rosiji

Nigerian Statesman Chief Ayotunde Rosiji (24 February 1917 – 31 July 2000) was a Nigerian politician and statesman, having served as Minister for Health and Minister of Information.