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 :101
Mycobacteriology
Molecular Biology
Public Health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
46,557
26,853
0.577
* Total Citation Counts Rankings
Ranking Based On Selection :102
gamma-ray astronomy
Cosmic Rays
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
46,724
18,067
0.387
* Total Citation Counts Rankings
Ranking Based On Selection :103
Tropical and infectious diseases
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
46,707
44,160
0.945
* Total Citation Counts Rankings
Ranking Based On Selection :104
Plant diversity and evolution
palaeovegetation science
conservation science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45,762
12,330
0.269
* Total Citation Counts Rankings
Ranking Based On Selection :105
Business Administration
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45,476
12,627
0.278
* Total Citation Counts Rankings
Ranking Based On Selection :106
Climate Change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45,858
18,251
0.398
* Total Citation Counts Rankings
Ranking Based On Selection :107
Heart failure
Interventional cardiology
General Cardiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45,301
43,030
0.950
* Total Citation Counts Rankings
Ranking Based On Selection :108
Epidemiology
Reproductive Health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45,657
43,761
0.958
* Total Citation Counts Rankings
Ranking Based On Selection :109
Astroparticle Physics
High Energy Astrophysics
Gamma-ray Astronomy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44,980
21,159
0.470
* Total Citation Counts Rankings
Ranking Based On Selection :110
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44,955
41,892
0.932
* Total Citation Counts Rankings
Ranking Based On Selection :111
physical activity and public health
non-communicable diseases
health behavior change
global south and healthy cities
obesity
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45,252
27,622
0.610
* Total Citation Counts Rankings
Ranking Based On Selection :112
Public Policy
Local Government
Human Resource Management
Development Studies
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44,698
32,359
0.724
* Total Citation Counts Rankings
Ranking Based On Selection :113
Medical and clinical parasitology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44,386
43,266
0.975
* Total Citation Counts Rankings
Ranking Based On Selection :114
child development
adolescent development
HIV
AIDS
public health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44,061
21,806
0.495
* Total Citation Counts Rankings
Ranking Based On Selection :115
Chemistry
Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
43,869
20,350
0.464
* Total Citation Counts Rankings
Ranking Based On Selection :116
Experimental High Energy Nuclear and Particle Physics
Cosmology
Nano-Physics
General Relativity
Computational Physics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44,083
18,493
0.420
* Total Citation Counts Rankings
Ranking Based On Selection :117
Movement disorders
PD
HD
Neurosonology
Cognition & Dementia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44,432
43,171
0.972
* Total Citation Counts Rankings
Ranking Based On Selection :118
HIV Prevention and Treatment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
43,158
19,338
0.448
* Total Citation Counts Rankings
Ranking Based On Selection :119
Quality
Patient safety
Science of Improvement
Leadership
Management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
43,371
37,502
0.865
* Total Citation Counts Rankings
Ranking Based On Selection :120
internal medicine
medical education
clinical epidemiology and biostatistics
health systems management
knowledge translation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,664
11,231
0.263
* Total Citation Counts Rankings
Ranking Based On Selection :121
health sciences
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,623
24,302
0.570
* Total Citation Counts Rankings
Ranking Based On Selection :122
ethnoecology
fungi ecology
biodiversity conservation
landscape restoration
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,700
26,990
0.632
* Total Citation Counts Rankings
Ranking Based On Selection :123
Ecologie marine
Biochimie
Phytoplancton
Biosurveillance
HABs
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,080
14,543
0.346
* Total Citation Counts Rankings
Ranking Based On Selection :124
Infectious Disease Epidemiology
Maternal and child Health
Mental Health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,725
40,803
0.955
* Total Citation Counts Rankings
Ranking Based On Selection :125
Clinical Medicine
Epidemiology
Cancer
Infectious disease
Surgery
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,814
41,007
0.958
* Total Citation Counts Rankings
Rankings
11,205
32
1
Ranking Based On Selection: 101
Nazir Ismail
National Institute for Communicable Diseases
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
46,557
26,853
0.577
Mycobacteriology
Molecular Biology
Public Health
* Total Citation Counts Rankings
Rankings
11,136
31
10
Ranking Based On Selection: 102
Nukri Komin
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
46,724
18,067
0.387
* Total Citation Counts Rankings
Rankings
11,143
11
3
Ranking Based On Selection: 103
Fitsum Weldegebreal
Haramaya University
Haramaya, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
46,707
44,160
0.945
* Total Citation Counts Rankings
Rankings
11,505
34
1
Ranking Based On Selection: 104
Richard M. Cowling
Nelson Mandela University
Port Elizabeth, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45,762
12,330
0.269
Plant diversity and evolution
palaeovegetation science
conservation science
* Total Citation Counts Rankings
Rankings
11,629
22
1
Ranking Based On Selection: 105
Idris Mohammed Gurin
Federal University Gashua
Gashua, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45,476
12,627
0.278
Business Administration
* Total Citation Counts Rankings
Rankings
11,471
33
14
Ranking Based On Selection: 106
Mark New
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45,858
18,251
0.398
* Total Citation Counts Rankings
Rankings
11,703
20
2
Ranking Based On Selection: 107
Magdy Abdelhamid
Cairo University
Giza, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45,301
43,030
0.950
Heart failure
Interventional cardiology
General Cardiology
* Total Citation Counts Rankings
Rankings
11,545
12
2
Ranking Based On Selection: 108
Engida Yisma|Engida Yisma Derbie
Addis Ababa University
Addis Ababa, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45,657
43,761
0.958
Epidemiology
Reproductive Health
* Total Citation Counts Rankings
Rankings
11,842
36
3
Ranking Based On Selection: 109
Soebur Razzaque
University of Johannesburg
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44,980
21,159
0.470
Astroparticle Physics
High Energy Astrophysics
Gamma-ray Astronomy
* Total Citation Counts Rankings
Rankings
11,857
21
3
Ranking Based On Selection: 110
Hosni Khairy Salem
Cairo University
Giza, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44,955
41,892
0.932
* Total Citation Counts Rankings
Rankings
11,726
35
15
Ranking Based On Selection: 111
Estelle Lambert
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45,252
27,622
0.610
physical activity and public health
non-communicable diseases
health behavior change
global south and healthy cities
obesity
* Total Citation Counts Rankings
Rankings
11,988
23
1
Ranking Based On Selection: 112
Onwunyi Ugochukwu Mmaduabuchi|Mokuye, S et al, Onwunyi, U. Mmaduabuchi, Ugochukwu Mmaduabuchi Onwunyi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44,698
32,359
0.724
Public Policy
Local Government
Human Resource Management
Development Studies
* Total Citation Counts Rankings
Rankings
12,116
23
5
Ranking Based On Selection: 113
Mona M Khater
Cairo University
Giza, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44,386
43,266
0.975
Medical and clinical parasitology
* Total Citation Counts Rankings
Rankings
12,259
37
11
Ranking Based On Selection: 114
Linda Richter
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44,061
21,806
0.495
child development
adolescent development
HIV
AIDS
public health
* Total Citation Counts Rankings
Rankings
12,348
25
6
Ranking Based On Selection: 115
Israa Kamal
Ain Shams University
Cairo, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
43,869
20,350
0.464
* Total Citation Counts Rankings
Rankings
12,250
24
2
Ranking Based On Selection: 116
Ahmed M Hamed
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44,083
18,493
0.420
Experimental High Energy Nuclear and Particle Physics
Cosmology
Nano-Physics
General Relativity
Computational Physics
* Total Citation Counts Rankings
Rankings
12,094
22
4
Ranking Based On Selection: 117
Shaimaa El-Jaafary
Cairo University
Giza, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44,432
43,171
0.972
Movement disorders
PD
HD
Neurosonology
Cognition & Dementia
* Total Citation Counts Rankings
Rankings
12,684
38
2
Ranking Based On Selection: 118
Salim S. Abdool Karim
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
43,158
19,338
0.448
HIV Prevention and Treatment
* Total Citation Counts Rankings
Rankings
12,583
1
1
Ranking Based On Selection: 119
Kossivi Afanvi
Université de Lomé
Lomé, Togo
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
43,371
37,502
0.865
Quality
Patient safety
Science of Improvement
Leadership
Management
* Total Citation Counts Rankings
Rankings
12,928
2
1
Ranking Based On Selection: 120
Nelson Sewankambo
Makerere University
Kampala, Uganda
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,664
11,231
0.263
internal medicine
medical education
clinical epidemiology and biostatistics
health systems management
knowledge translation
* Total Citation Counts Rankings
Rankings
12,946
40
1
Ranking Based On Selection: 121
Karl Peltzer
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,623
24,302
0.570
* Total Citation Counts Rankings
Rankings
12,913
9
3
Ranking Based On Selection: 122
Jianchu Xu
World Agroforestry (ICRAF)
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,700
26,990
0.632
ethnoecology
fungi ecology
biodiversity conservation
landscape restoration
* Total Citation Counts Rankings
Rankings
13,209
4
1
Ranking Based On Selection: 123
Draredja Mohamed Anis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,080
14,543
0.346
Ecologie marine
Biochimie
Phytoplancton
Biosurveillance
HABs
* Total Citation Counts Rankings
Rankings
12,897
14
3
Ranking Based On Selection: 124
Abel Fekadu Dadi
University of Gondar
Gondar, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,725
40,803
0.955
Infectious Disease Epidemiology
Maternal and child Health
Mental Health
* Total Citation Counts Rankings
Rankings
12,851
39
3
Ranking Based On Selection: 125
Yoshan Moodley
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,814
41,007
0.958
Clinical Medicine
Epidemiology
Cancer
Infectious disease
Surgery