Olowu was born in Lagos, Nigeria on 7 June 1924 to B. M. S. Olowu and R. A. Olowu. He is the first grandson of Madam Tinubu and Saka Tinubu, part of a wealthy Yoruba family. He attended Saint Paul's Primary School, Breadfruit Lagos where in 1936 he began his sporting career represented his school in the Empire Day Athletics in commemoration of the British Empire Day, which was celebrated in Britain and its colonies before the independence in 1960. He later attended CMS Grammar School, Lagos where he was the sports prefect. He started working as a civil servant before he won a Federal Government scholarship to study Physical Education in Loughborough College Leicestershire, England in 1952. He graduated with honors in 1955
Athletic career
Olowu was among the first group of Nigerians to participate in the Olympic Games. He represented the country twice at the Olympics in 1952 and 1956 respectively in long jump and relay race. He also took part in the Commonwealth Games of 1950, 1954 and 1958. He won silver medals in the long jump and sprint relay at the 1958 edition.
Athletics official
Olowu served in athletics in many other capacities. He was a prominent member of the Athletics Federation of Nigeria for several years. He was an official at the 8th Commonwealth Games in Kingston, Jamaica in 1966. He was the Nigerian team manager to the 1976 Summer Olympics, Montréal, Canada. All the African countries eventually boycotted the Canada games because of the presence of the then apartheid South Africa at the games. He served as the Chairman, Lagos State Sports Council. He was the chief starter at the 1973 All-Africa Games held in Lagos, Nigeria. He also served as captain and as a coach of the national teams at various times.
Later life
After he retired from his athletics career, Olowu worked in the Nigerian Prison system but his love for sports was never far behind. He set up the sports complex at the Nigerian Prison in Kirikiri, Lagos where he worked for some years and set up the then Prisons Athletics club which produced many athletes for Nigeria. Olowu was married to Aminat Olowu until her death. He was the Chairman of the Olowu descendants Union and he was also the head of the Tinubu Family. He had many children, grandchildren and great grandchildren. Olowu died on 14 August 2019 at his daughters family hospital and was buried the next day according to Muslim rites.