This ranking is based on research publications and citations from the last five years (2010 to 2014) as well as visibility on the internet. Rank:Institution:Total Influence Factor
1. University of Ibadan, 41.22
2. University of Nigeria, 39.96
3. Ahmadu Bello University 35.57
4. University of Lagos 34.48
5. Obafemi Awolowo University 33.85
6. University of Benin 32.96
7. University of Ilorin 31.27
8. University of Port Harcourt 29.24
9. Nnamdi Azikiwe University 26.53
10. University of Calabar 26.52
the full list: http://ranking.journalsconsortium.org/unirankings/country/Nigeria/2015