A Fellow of the Institute of Corporate Administration, Nigeria, and Member of the Governing Council of the International Peace Research Association (IPRA), Dr Adedimeji is a Member of the Executive Councils of both the University of Ilorin Alumni Association and English Scholars Association of Nigeria (ESAN). He is also a Fellow of both the Society for Peace Studies and Practice and World Institute for Peace and he is a member of the Fulbright Alumni Association of Nigeria and the Association of Nigerian Authors, among others. He has written, co-written, edited and co-edited about a dozen books.