Oyewusi Gureje, NNOM (born in 1952) is a Nigerian psychiatrist at the University of Ibadan, Nigeria and Director at the World Health Organization Collaborating Centre for Research and Training in Mental Health, Neurosciences, Drug and Alcohol Abuse in the institution. He is also a Professor Extraordinary at the Department of Psychiatry, Stellenbosch University, South Africa. He is best known for his work on epidemiology, nosology and global mental health and as one of the leading voices on mental health service and policy development in Africa. Oye Gureje has published more than 500 peer-reviewed scientific papers, monographs, book chapters, and other reports. He has been listed, since 2004, in the "top 1% cited researchers in the area of psychiatry and psychology" and, according to Clarivate Analytics, he is one of the "most influential scientific minds" Source: Wikipedia (en)