Citation Rankings
Highly Cited Researchers
Africa Highly Cited Researchers Citation Rankings 2025
The Citation Rankings (Highly Cited Researchers) highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the Scientists Last 6 Years Citation Index, Universities Total Citations Rankings 2025, and Universities Last 6 Years Citations Rankings 2025.
* Total Citation Counts Rankings
Ranking Based On Selection :76
Geriatric medicine
lifestyle medicine
adolescent health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
55,648
7,435
0.134
* Total Citation Counts Rankings
Ranking Based On Selection :77
High risk pregnancy
Assisted Reproductive Techniques
Evidence Based Health Care
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
55,956
51,165
0.914
* Total Citation Counts Rankings
Ranking Based On Selection :78
medicinal chemistry
peptides
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
54,729
25,958
0.474
* Total Citation Counts Rankings
Ranking Based On Selection :79
AMR
Bacteriophage therapy
Infectious diseases
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
54,886
52,373
0.954
* Total Citation Counts Rankings
Ranking Based On Selection :80
Health Economics
Public Health
Health Policy and Systems Research
Pharmaco-economics
Pharmaco-epidemiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
54,820
47,916
0.874
* Total Citation Counts Rankings
Ranking Based On Selection :81
Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
53,170
11,663
0.219
* Total Citation Counts Rankings
Ranking Based On Selection :82
Non-communicable Diseases
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
52,994
50,511
0.953
* Total Citation Counts Rankings
Ranking Based On Selection :83
Cardiopulmonary and Sport Medicine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
52,902
50,231
0.950
* Total Citation Counts Rankings
Ranking Based On Selection :84
High Energy Physics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
53,365
51,044
0.957
* Total Citation Counts Rankings
Ranking Based On Selection :85
Plant Anatomy
Plant Ecology
Ethnobotany
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
51,355
20,870
0.406
* Total Citation Counts Rankings
Ranking Based On Selection :86
Medical and Health Sciences
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
52,081
49,678
0.954
* Total Citation Counts Rankings
Ranking Based On Selection :87
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
52,110
50,831
0.975
* Total Citation Counts Rankings
Ranking Based On Selection :88
agriculture
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
51,631
29,127
0.564
* Total Citation Counts Rankings
Ranking Based On Selection :89
Atherosclerosis
drug safety and musculoskeletal disease
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
51,879
50,757
0.978
* Total Citation Counts Rankings
Ranking Based On Selection :90
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
50,944
48,236
0.947
* Total Citation Counts Rankings
Ranking Based On Selection :91
Epidemiology
Global Health
Infectious Diseases
Bacteriology
Maternal and Neonatal Health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
51,491
35,087
0.681
* Total Citation Counts Rankings
Ranking Based On Selection :92
Relativity
cosmology
complexity
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
49,669
13,174
0.265
* Total Citation Counts Rankings
Ranking Based On Selection :93
Epidemiology
Evidence Synthesis
Implementation Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
49,923
48,358
0.969
* Total Citation Counts Rankings
Ranking Based On Selection :94
Community
Environmental and Occupational Medicine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
49,506
28,945
0.585
* Total Citation Counts Rankings
Ranking Based On Selection :95
Ecology
conservation Biology
Earth system science
Climate change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
49,225
21,983
0.447
* Total Citation Counts Rankings
Ranking Based On Selection :96
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
49,015
47,181
0.963
* Total Citation Counts Rankings
Ranking Based On Selection :97
pulmonary infections
tuberculosis
diseases of poverty
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
48,418
27,396
0.566
* Total Citation Counts Rankings
Ranking Based On Selection :98
Nanocomposites
Mechanics of Nano-structures
Composite structures
Applied Mathematics
Plates and Shells
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
47,571
31,241
0.657
* Total Citation Counts Rankings
Ranking Based On Selection :99
Structural Egeneering
EM-DRIVE
Nano-Tech Casimir Reactors
Nonlinear Dynamics-Quantum Physics and Cosmology-Dark Energy-Deter
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
47,106
9,499
0.202
* Total Citation Counts Rankings
Ranking Based On Selection :100
roots
agroforestry
ecosystem services
landscape
water
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
47,223
18,638
0.395
* Total Citation Counts Rankings
Rankings
8,467
18
2
Ranking Based On Selection: 76
Uduakobong Morgan
University of Uyo
Uyo, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
55,648
7,435
0.134
Geriatric medicine
lifestyle medicine
adolescent health
* Total Citation Counts Rankings
Rankings
8,380
17
4
Ranking Based On Selection: 77
Ashraf Nabhan
Ain Shams University
Cairo, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
55,956
51,165
0.914
High risk pregnancy
Assisted Reproductive Techniques
Evidence Based Health Care
* Total Citation Counts Rankings
Rankings
8,701
25
1
Ranking Based On Selection: 78
Fernando Albericio
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
54,729
25,958
0.474
* Total Citation Counts Rankings
Rankings
8,666
3
1
Ranking Based On Selection: 79
Tesfaye Kassa
Jimma University
Jimma, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
54,886
52,373
0.954
AMR
Bacteriophage therapy
Infectious diseases
* Total Citation Counts Rankings
Rankings
8,680
19
3
Ranking Based On Selection: 80
Obinna E. Onwujekwe
University of Nigeria
Nsukka, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
54,820
47,916
0.874
Health Economics
Public Health
Health Policy and Systems Research
Pharmaco-economics
Pharmaco-epidemiology
* Total Citation Counts Rankings
Rankings
9,105
6
1
Ranking Based On Selection: 81
Ann Ngari
Karatina University
Karatina, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
53,170
11,663
0.219
* Total Citation Counts Rankings
Rankings
9,148
4
1
Ranking Based On Selection: 82
Belete Biadgo Mesfine
University of Gondar
Gondar, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
52,994
50,511
0.953
* Total Citation Counts Rankings
Rankings
9,169
20
1
Ranking Based On Selection: 83
Rufus Adesoji Adedoyin
Obafemi Awolowo University
Ile-Ife, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
52,902
50,231
0.950
* Total Citation Counts Rankings
Rankings
9,052
26
8
Ranking Based On Selection: 84
Joyful Mdhluli
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
53,365
51,044
0.957
* Total Citation Counts Rankings
Rankings
9,608
21
1
Ranking Based On Selection: 85
Mahboob Adekilekun Jimoh
Osun State University
Oshogbo, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
51,355
20,870
0.406
Plant Anatomy
Plant Ecology
Ethnobotany
* Total Citation Counts Rankings
Rankings
9,397
6
1
Ranking Based On Selection: 86
Addisu Melese
Bahir Dar University
Bahir Dar, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
52,081
49,678
0.954
Medical and Health Sciences
* Total Citation Counts Rankings
Rankings
9,387
5
1
Ranking Based On Selection: 87
Getachew Mullu Kassa
Debre Markos University
Debre Markos, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
52,110
50,831
0.975
* Total Citation Counts Rankings
Rankings
9,534
7
1
Ranking Based On Selection: 88
Philip Thornton
International Livestock Research Institute (ILRI)
Addis Ababa, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
51,631
29,127
0.564
* Total Citation Counts Rankings
Rankings
9,469
7
1
Ranking Based On Selection: 89
Abadi Kahsu Gebre
Mekelle University
Mekelle, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
51,879
50,757
0.978
Atherosclerosis
drug safety and musculoskeletal disease
* Total Citation Counts Rankings
Rankings
9,745
8
2
Ranking Based On Selection: 90
Zerihun Ataro
Haramaya University
Haramaya, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
50,944
48,236
0.947
* Total Citation Counts Rankings
Rankings
9,571
1
1
Ranking Based On Selection: 91
Anna Roca
Medical Research Council Unit The Gambia
Serrekunda, Gambia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
51,491
35,087
0.681
Epidemiology
Global Health
Infectious Diseases
Bacteriology
Maternal and Neonatal Health
* Total Citation Counts Rankings
Rankings
10,157
28
12
Ranking Based On Selection: 92
George FR Ellis
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
49,669
13,174
0.265
Relativity
cosmology
complexity
* Total Citation Counts Rankings
Rankings
10,089
27
9
Ranking Based On Selection: 93
Abdu A Adamu
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
49,923
48,358
0.969
Epidemiology
Evidence Synthesis
Implementation Science
* Total Citation Counts Rankings
Rankings
10,202
18
5
Ranking Based On Selection: 94
Mostafa Kamaleldin Mohamed
Ain Shams University
Cairo, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
49,506
28,945
0.585
Community
Environmental and Occupational Medicine
* Total Citation Counts Rankings
Rankings
10,288
29
3
Ranking Based On Selection: 95
Guy Midgley
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
49,225
21,983
0.447
Ecology
conservation Biology
Earth system science
Climate change
* Total Citation Counts Rankings
Rankings
10,353
9
2
Ranking Based On Selection: 96
Zegeye Abebe Abitew
University of Gondar
Gondar, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
49,015
47,181
0.963
* Total Citation Counts Rankings
Rankings
10,538
30
13
Ranking Based On Selection: 97
Keertan Dheda
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
48,418
27,396
0.566
pulmonary infections
tuberculosis
diseases of poverty
* Total Citation Counts Rankings
Rankings
10,849
3
1
Ranking Based On Selection: 98
Abdelouahed Tounsi
Djillali Liabes university of Sidi Bel Abbes
Sidi Bel Abbès, Algeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
47,571
31,241
0.657
Nanocomposites
Mechanics of Nano-structures
Composite structures
Applied Mathematics
Plates and Shells
* Total Citation Counts Rankings
Rankings
11,004
19
1
Ranking Based On Selection: 99
MS El Naschie
Alexandria University
Alexandria, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
47,106
9,499
0.202
Structural Egeneering
EM-DRIVE
Nano-Tech Casimir Reactors
Nonlinear Dynamics-Quantum Physics and Cosmology-Dark Energy-Deter
* Total Citation Counts Rankings
Rankings
10,972
8
2
Ranking Based On Selection: 100
Meine Van Noordwijk|Noordwijk, Meine van, van Noordwijk, Meine
World Agroforestry (ICRAF)
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
47,223
18,638
0.395
roots
agroforestry
ecosystem services
landscape
water