| Honorary President, African Mathematical Union (AMU) 1995- |
| President, African mathematical Union 1986-1995 |
| Fellow, TWAS, The Academy of Sciences for the Developing World. 1989- |
| Fellow, African Academy of Sciences 1986- |
| Member, European Academy of Arts, Science & Humanities 1986- |
| Fellow, Nigerian Academy of Science 1989- |
| Fellow, Mathematical Association of Nigeria 1987- |
| Foreign Fellow, Mongolian Academy of Sciences 2005- |
| Distinguished Service and Achievement Award USA National Association of mathematician (NAM) 1993 |
| Special Merit Award, Ogun State of Nigeria 1987 |
| Member, International Mathematical Union Commission on Development and Exchange 1986-1994 |
| Member, Mathematics Advisory Committee International Centre for Theoretical Physics (ICTP), Trieste, Italy. 1986-92 |
| Vice-Chairman, First Congress of African Scientists, Brazzaville, Congo 1987 |
| Vice-Chairman, Scientific Committee, Organisation of African Unity (OAU) 1987 |
| Member, Steering Committee, Pan-African Union for Science and Technology 1987-90 |
| Member, Board of Trustees, Mathematical Association of Nigeria 1988- |
| Dean, Postgraduate School, University of Ibadan 1986-1990 |
| Chairman, Committee of Deans of Postgraduate Schools in Nigerian Universities 1987-1988 |
| Chairman, UNESCO Committee of African Consultants Scientists, Dakar, Senegal 1987 |
| Chairman, Science and Technology Committee, Pan-African Institute of International relation Geneva, Switzerland 1988- |
| Vice-Chairman, Governing Council, International Centre for Mathematics and Physical Sciences, Porto-Novo, Benin Republic 1989 |
| Member, UNESCO Advisory Committee of Expert Mathematicians 1987 |
| Vice-President, Science Association of Nigeria 1983-1994 |
| Member, Board of Directors, PRELUDE-programme Recherches et Liaison Universite et Development Namur, Belgium 1990-1993 |
| Member, Governing Council, Institute de Recherches Mathematiques (IRMA), Abidjan, Cote D'Ivoire 1993- |
| Member, International Advisory Committee, International Village for Science and Technology Dar es Salaam, Tanzania 1990 |
| Head, Department of mathematics, University of Ibadan 1983-1986 |
| Academy Secretary, Physical Science, Nigeria Academy of Science 1990-1993 |
| Associate Editor (Algebra) Journal of the Nigerian Mathematical Society 1984- |
| Member, Editorial Board, Journal of the Nigeria Mathematical Society 1984-1990 |
| Guest Editor, K-theory Journal 1989,2003 4 |
| Member, Editorial Board-Abacus‖-Journal of the Mathematical Association of Nigeria 1985- |
| Member, Editorial Board, Journal of the Mathematical and Computer Science 1993- |
| Member, Editorial Advisory Board, Africa Matematika 1986-1995 2010- |
| Member, Editorial Board, Nigerian Journal of Science 1977-1981 |
| Honorary Citizenship, City of Huntsville, Alabama, USA 1968 |
| Business Manager, Science Association of Nigeria 1978-1981 |
| Member, American Mathematical Society 1971- |
| Member, London Mathematical Society 1994- |
| Member, Mathematical Association of America 1994- |
| Member, Nigerian Mathematical Society 1979- |
| Member, International Committee, American Mathematical Society 1993-98 |
| Chairman, Mathematics Section, Science Association of Nigeria 1978-1981 |
| Member of Council, Nigerian Mathematical Society 1985-1990 |
| Member of Council, Mathematical Association of Nigeria 1987-1991 |
| 1997 Distinguished Visitor, South African Mathematics Society 1997 |
| Traditional Royal Title---Otunba Ofiran of Ijebu-land (Nigeria) 1993 |
| African Mathematical Union (AMU) medal 2000 |
| Virginia Chatelain (Endowed) Lecture, Kansas State University, Manhattan, KS, USA 2007. |
| Member, International Advisory Committee, National Mathematical Centre, Abuja, Nigeria 2008- |
| Nigeria National Honours-OON (Officer of the Order of the Niger) awarded by the President, Federal Republic of Nigeria 2008- |
| Nigerian National Order of Merit-(NNOM)-the highest honour for Nigerian Academics-awarded by the President, Federal Republic of Nigeria. 2009.- |
| William W. S. Claytor Endowed Professor of Mathematics Grambling State University, Grambling, Louisiana, USA . 2009.- |
| Member of the Advisory Board of a USA-EUROPE-AFRICA Graduate Training Initiative in Mathematics and Computer Science 2010- |
| International Conference on Algebraic K-theory and Its Applications In honor of my 70th birthday. Nanjing University, Nanjing, China March 17-21, 2011 |
| Honorary President, African Mathematical Union (AMU) 1995- |
| President, African mathematical Union 1986-1995 |
| Fellow, TWAS, The Academy of Sciences for the Developing World. 1989- |
| Fellow, African Academy of Sciences 1986- |
| Member, European Academy of Arts, Science & Humanities 1986- |
| Fellow, Nigerian Academy of Science 1989- |
| Fellow, Mathematical Association of Nigeria 1987- |
| Foreign Fellow, Mongolian Academy of Sciences 2005- |
| Distinguished Service and Achievement Award USA National Association of mathematician (NAM) 1993 |
| Special Merit Award, Ogun State of Nigeria 1987 |
| Member, International Mathematical Union Commission on Development and Exchange 1986-1994 |
| Member, Mathematics Advisory Committee International Centre for Theoretical Physics (ICTP), Trieste, Italy. 1986-92 |
| Vice-Chairman, First Congress of African Scientists, Brazzaville, Congo 1987 |
| Vice-Chairman, Scientific Committee, Organisation of African Unity (OAU) 1987 |
| Member, Steering Committee, Pan-African Union for Science and Technology 1987-90 |
| Member, Board of Trustees, Mathematical Association of Nigeria 1988- |
| Dean, Postgraduate School, University of Ibadan 1986-1990 |
| Chairman, Committee of Deans of Postgraduate Schools in Nigerian Universities 1987-1988 |
| Chairman, UNESCO Committee of African Consultants Scientists, Dakar, Senegal 1987 |
| Chairman, Science and Technology Committee, Pan-African Institute of International relation Geneva, Switzerland 1988- |
| Vice-Chairman, Governing Council, International Centre for Mathematics and Physical Sciences, Porto-Novo, Benin Republic 1989 |
| Member, UNESCO Advisory Committee of Expert Mathematicians 1987 |
| Vice-President, Science Association of Nigeria 1983-1994 |
| Member, Board of Directors, PRELUDE-programme Recherches et Liaison Universite et Development Namur, Belgium 1990-1993 |
| Member, Governing Council, Institute de Recherches Mathematiques (IRMA), Abidjan, Cote D'Ivoire 1993- |
| Member, International Advisory Committee, International Village for Science and Technology Dar es Salaam, Tanzania 1990 |
| Head, Department of mathematics, University of Ibadan 1983-1986 |
| Academy Secretary, Physical Science, Nigeria Academy of Science 1990-1993 |
| Associate Editor (Algebra) Journal of the Nigerian Mathematical Society 1984- |
| Member, Editorial Board, Journal of the Nigeria Mathematical Society 1984-1990 |
| Guest Editor, K-theory Journal 1989,2003 4 |
| Member, Editorial Board-Abacus‖-Journal of the Mathematical Association of Nigeria 1985- |
| Member, Editorial Board, Journal of the Mathematical and Computer Science 1993- |
| Member, Editorial Advisory Board, Africa Matematika 1986-1995 2010- |
| Member, Editorial Board, Nigerian Journal of Science 1977-1981 |
| Honorary Citizenship, City of Huntsville, Alabama, USA 1968 |
| Business Manager, Science Association of Nigeria 1978-1981 |
| Member, American Mathematical Society 1971- |
| Member, London Mathematical Society 1994- |
| Member, Mathematical Association of America 1994- |
| Member, Nigerian Mathematical Society 1979- |
| Member, International Committee, American Mathematical Society 1993-98 |
| Chairman, Mathematics Section, Science Association of Nigeria 1978-1981 |
| Member of Council, Nigerian Mathematical Society 1985-1990 |
| Member of Council, Mathematical Association of Nigeria 1987-1991 |
| Reviewer, Mathematical Reviews 1991- |
| 1997 Distinguished Visitor, South African Mathematics Society 1997 |
| Traditional Royal Title---Otunba Ofiran of Ijebu-land (Nigeria) 1993 |
| African Mathematical Union (AMU) medal 2000 |
| Virginia Chatelain (Endowed) Lecture, Kansas State University, Manhattan, KS, USA 2007. |
| Member, International Advisory Committee, National Mathematical Centre, Abuja, Nigeria 2008- |
| Nigeria National Honours-OON (Officer of the Order of the Niger) awarded by the President, Federal Republic of Nigeria 2008- |
| Nigerian National Order of Merit-(NNOM)-the highest honour for Nigerian Academics-awarded by the President, Federal Republic of Nigeria. 2009.- |
| William W. S. Claytor Endowed Professor of Mathematics Grambling State University, Grambling, Louisiana, USA . 2009.- |
| Member of the Advisory Board of a USA-EUROPE-AFRICA Graduate Training Initiative in Mathematics and Computer Science 2010- |
| International Conference on Algebraic K-theory and Its Applications In honor of my 70th birthday. Nanjing University, Nanjing, China March 17-21, 2011 |