Total 2,424,675 scientists, country 221, and institutions 24,468 are evaluated in the Productivity Rankings, an exclusive service provided by AD Scientific Index. This ranking measures and highlights the scientific productivity of researchers based on the i10 index (number of publications with at least 10 citations). This system identifies highly productive scientists across disciplines, institutions, and regions, contributing to the development of evidence-based academic policies and effective incentive mechanisms. The rankings include global, regional, and institutional analyses, along with specialized rankings such as Scientists' Last 6 Years' i10 Index and Universities' i10 Index Rankings 2025. With Premium Membership, you can:
- Gain full access to detailed comparisons and advanced analytics,
- Objectively evaluate your academic productivity,
- Make strategic, data-driven decisions to enhance performance.
* Total i10 IndexRankings
Ranking Based On Selection: 1
![Ayodeji Olukoju.](https://cdn.adscientificindex.com/pictures/f9/104588.jpg)
Maritime History
Economic History
Social History
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
45
10
0.222
* Total i10 IndexRankings
Ranking Based On Selection: 2
![Samuel Ovuete Aghalino](https://cdn.adscientificindex.com/pictures/8d/90232.jpg)
Economic and Social History
with emphasis on Oil and Gas and the Environment in the Niger Delta
Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
22
7
0.318
* Total i10 IndexRankings
Ranking Based On Selection: 3
![Olukoya Ogen](https://cdn.adscientificindex.com/pictures/d3/96389.jpg)
identity and migration studies
borderland research and african history
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
21
10
0.476
* Total i10 IndexRankings
Ranking Based On Selection: 4
![Kelechi Johnmary Ani](https://cdn.adscientificindex.com/pictures/13/5794730.jpg)
Peace
Conflict
Security Studies
African Politics
History
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
20
12
0.600
* Total i10 IndexRankings
Ranking Based On Selection: 5
![Egodi Uchendu](https://cdn.adscientificindex.com/pictures/be/96658.jpg)
African & Nigerian History
Women History
Islam
Religious Conversions
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
17
11
0.647
* Total i10 IndexRankings
Ranking Based On Selection: 6
![Okon E. Uya](/user/assets/images/profile/no-profile-photo.png)
History
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
17
2
0.118
* Total i10 IndexRankings
Ranking Based On Selection: 7
![Nwankwo Okechukwu Emmanuel](https://cdn.adscientificindex.com/pictures/6d/5795909.jpg)
Orthopaedics and Trauma
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
16
8
0.500
* Total i10 IndexRankings
Ranking Based On Selection: 8
![Hilary Achunike](/user/assets/images/profile/no-profile-photo.png)
Pentecostalism
African Church History
Religion and Society
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
15
11
0.733
* Total i10 IndexRankings
Ranking Based On Selection: 9
![Emmanuel Oladipo Ojo](https://cdn.adscientificindex.com/pictures/6a/4530941.jpg)
African history
cultural studies
development studies democracy
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
14
9
0.643
* Total i10 IndexRankings
Ranking Based On Selection: 10
![Geoffrey Nwaka](https://cdn.adscientificindex.com/pictures/d3/5795998.jpg)
history
urban studies
indigenous knowledge
African development
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
14
1
0.071
Enroll all your faculty members with discounted institutional membership to showcase your institution's academic strength to the world in the best way possible – join now and achieve results fast!
* Total i10 IndexRankings
Ranking Based On Selection: 11
![Lawal Shehu Dauda](/user/assets/images/profile/no-profile-photo.png)
history of ogbomoso
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
13
11
0.846
* Total i10 IndexRankings
Ranking Based On Selection: 12
![Gbadebo Hakeem Ibraheem](https://cdn.adscientificindex.com/pictures/58/5794551.jpg)
Orthopaedics
Clubfoot
Limb lengthening
Injury costing
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
12
10
0.833
* Total i10 IndexRankings
Ranking Based On Selection: 13
![Olayemi Akinwumi](https://cdn.adscientificindex.com/pictures/1d/4310602.jpg)
History
Conflict Resolution
Ethnicisation
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
12
2
0.167
* Total i10 IndexRankings
Ranking Based On Selection: 14
![Umar Danfulani](/user/assets/images/profile/no-profile-photo.png)
History of Religions
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
11
4
0.364
* Total i10 IndexRankings
Ranking Based On Selection: 15
![Samuel Uwale Eyesan](https://cdn.adscientificindex.com/pictures/5f/5796715.jpg)
Orthopaedic Surgical Oncology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
11
3
0.273
* Total i10 IndexRankings
Ranking Based On Selection: 16
![Rasheed Olaniyi](https://cdn.adscientificindex.com/pictures/b0/5797513.jpg)
African History
Migration
Urban and labour studies
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
10
6
0.600
* Total i10 IndexRankings
Ranking Based On Selection: 17
![George Enweluzo](/user/assets/images/profile/no-profile-photo.png)
Orthopedics
Arthroplasty
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
10
5
0.500
* Total i10 IndexRankings
Ranking Based On Selection: 18
![Isaac Ayegboyin](/user/assets/images/profile/no-profile-photo.png)
Church History
Doctrinal Theology
African Christianity
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
10
2
0.200
* Total i10 IndexRankings
Ranking Based On Selection: 19
![Paul Olukayode Abiola](/user/assets/images/profile/no-profile-photo.png)
Orthopaedics
Traumatology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
9
1.000
* Total i10 IndexRankings
Ranking Based On Selection: 20
![Johnson Olaosebikan Aremu](https://cdn.adscientificindex.com/pictures/13/4531118.jpg)
Diplomatic History
Diplomacy
African Political History
Nigerian History
American History
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
8
0.889
* Total i10 IndexRankings
Ranking Based On Selection: 21
![Agboola Zacchaeus|Agboola Zacchaeus AkinwumiHarmony](https://cdn.adscientificindex.com/pictures/68/5798183.jpg)
African History. Economy History
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
8
0.889
* Total i10 IndexRankings
Ranking Based On Selection: 22
![Charles E. Ekpo](https://cdn.adscientificindex.com/pictures/65/3508976.jpg)
Security Studies
African History
Nation-building
Peace and Conflict Studies
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
7
0.778
* Total i10 IndexRankings
Ranking Based On Selection: 23
![Patrick Enoch Nmah](/user/assets/images/profile/no-profile-photo.png)
church history
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
5
0.556
* Total i10 IndexRankings
Ranking Based On Selection: 24
![Akachi Odoemene](https://cdn.adscientificindex.com/pictures/eb/4531030.jpg)
Social and Cultural History
Peace and Conflict Studies
Development Studies
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
8
5
0.625
* Total i10 IndexRankings
Ranking Based On Selection: 25
![Victor O. Ukaogo](https://cdn.adscientificindex.com/pictures/20/5801769.jpg)
African History
Environmental History
Africa & the West
Multinational Investments and Resources-induced conflict & Underdevel
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
8
5
0.625
Ayodeji Olukoju.
University of Lagos
Lagos, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
45
10
0.222
Maritime History
Economic History
Social History
Samuel Ovuete Aghalino
University of Ilorin
Ilorin, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
22
7
0.318
Economic and Social History
with emphasis on Oil and Gas and the Environment in the Niger Delta
Nigeria
Olukoya Ogen
Osun State University
Oshogbo, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
21
10
0.476
identity and migration studies
borderland research and african history
Kelechi Johnmary Ani
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
20
12
0.600
Peace
Conflict
Security Studies
African Politics
History
Egodi Uchendu
University of Nigeria
Nsukka, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
17
11
0.647
African & Nigerian History
Women History
Islam
Religious Conversions
Okon E. Uya
University of Calabar
Calabar, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
17
2
0.118
Nwankwo Okechukwu Emmanuel
University of Nigeria
Nsukka, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
16
8
0.500
Hilary Achunike
University of Nigeria
Nsukka, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
15
11
0.733
Pentecostalism
African Church History
Religion and Society
Emmanuel Oladipo Ojo
Ekiti State University Ado Ekiti
Ado-Ekiti, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
14
9
0.643
African history
cultural studies
development studies democracy
Geoffrey Nwaka
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
14
1
0.071
history
urban studies
indigenous knowledge
African development
Enroll all your faculty members with discounted institutional membership to showcase your institution's academic strength to the world in the best way possible – join now and achieve results fast!
Lawal Shehu Dauda
University of Ilorin
Ilorin, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
13
11
0.846
Gbadebo Hakeem Ibraheem
University of Ilorin
Ilorin, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
12
10
0.833
Orthopaedics
Clubfoot
Limb lengthening
Injury costing
Olayemi Akinwumi
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
12
2
0.167
History
Conflict Resolution
Ethnicisation
Umar Danfulani
University of Jos
Jos, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
11
4
0.364
Samuel Uwale Eyesan
Bowen University
Iwo, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
11
3
0.273
Rasheed Olaniyi
University of Ibadan
Ibadan, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
10
6
0.600
African History
Migration
Urban and labour studies
George Enweluzo
University of Lagos
Lagos, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
10
5
0.500
Isaac Ayegboyin
Bowen University
Iwo, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
10
2
0.200
Church History
Doctrinal Theology
African Christianity
Paul Olukayode Abiola
Afe Babalola University
Ado-Ekiti, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
9
1.000
Johnson Olaosebikan Aremu
Ekiti State University Ado Ekiti
Ado-Ekiti, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
8
0.889
Diplomatic History
Diplomacy
African Political History
Nigerian History
American History
Agboola Zacchaeus|Agboola Zacchaeus AkinwumiHarmony
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
8
0.889
African History. Economy History
Charles E. Ekpo
Arthur Jarvis University
Calabar, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
7
0.778
Security Studies
African History
Nation-building
Peace and Conflict Studies
Patrick Enoch Nmah
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
5
0.556
Akachi Odoemene
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
8
5
0.625
Social and Cultural History
Peace and Conflict Studies
Development Studies
Victor O. Ukaogo
University of Nigeria
Nsukka, Nigeria
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
8
5
0.625
African History
Environmental History
Africa & the West
Multinational Investments and Resources-induced conflict & Underdevel