Top 100 Scientists

Africa Top 100 Scientists 2025

Top 100 scientists can be ranked globally or specific to the following regions including Africa, Asia, Europe, North America, Latin America, Oceania, Arab League, ASEAN, EECA, and BRICS based on total H-index scores without any breakdown by subject areas. Top 100 rankings in the world, in a continent, or a region include standardized subjects areas of Agriculture & Forestry, Arts, Design and Architecture, Business & Management, Economics & Econometrics, Education, Engineering & Technology, History, Philosophy, Theology, Law/Law and Legal Studies, Medical and Health Sciences, Natural Sciences, Social Sciences, Art and Humanities Rankings and Social Sciences and Humanities Rankings BETA VERSION. Subject field ranking in world, region, country and university is beta version since subject field "others" (873,864 scientists profile whose branch cannot be determined, not yet edited or determined) is excluded, so the ranking will change as the others fields are edited. Please note that. Subjects indicated as “ * others ” will not be included in the ranking by regions and subjects.

* Rankings
Ranking Based On Selection :1
Nelson Sewankambo
internal medicine
medical education
clinical epidemiology and biostatistics
health systems management
knowledge translation
Metrics
H-Index
i10 Index
Citation
91
313
42,878
* Rankings
Ranking Based On Selection :5
Abdulrazaq G. Habib
Infectious Diseases
Toxicology
snake bite envenomination
vaccines
immunology
Metrics
H-Index
i10 Index
Citation
41
91
6,416
* Rankings
Ranking Based On Selection :9
Paul Rheeder
Diabetes
Clinical Epidemiology
Hypertension
Cardiovascular disease
Metrics
H-Index
i10 Index
Citation
33
82
4,750
* Rankings
Ranking Based On Selection :12
Lameck Diero
Internal Medicine
Chest Medicine
Health Informatics
Metrics
H-Index
i10 Index
Citation
28
50
3,090
* Rankings
Ranking Based On Selection :14
Julius Mwita
Internal medicine
Cardiovascular diseases
Clinical epidemiology
Metrics
H-Index
i10 Index
Citation
24
40
3,430
* Rankings
Ranking Based On Selection :16
Samar Tharwat
Rheumatology
Immunology
Muscloskeletal Ultrasound
Metrics
H-Index
i10 Index
Citation
22
40
3,868
* Rankings
Ranking Based On Selection :17
Joseph Mamlin
Relationship between academic centers Healthcare care systems for under-served population
Internal medicine
Metrics
H-Index
i10 Index
Citation
22
29
2,161
* Rankings
Ranking Based On Selection :18
Michael O. Iroezindu
HIV/AIDS/Antiretroviral therapy
Opportunistic Infections
Community-acquired Pneumonia
Sepsis Syndromes and Malaria
Metrics
H-Index
i10 Index
Citation
21
42
1,818
* Rankings
Ranking Based On Selection :22
Ahmed Abdel Razik
infectious diseases-liver cirrhosis-internal medicine
Metrics
H-Index
i10 Index
Citation
19
28
1,150
* Rankings
Ranking Based On Selection :23
Michael Adeyemi Olamoyegun
Diabetes
Cardiovascular medicine
Epidemiology
Lipids
Telemedicine
Metrics
H-Index
i10 Index
Citation
19
27
1,097
* Rankings
Ranking Based On Selection :24
Magdy Hamed
internal medicine
gastroentrology & hepatology
Metrics
H-Index
i10 Index
Citation
19
30
2,112
* Rankings
Ranking Based On Selection :37
Harold Ayetey
Internal Medicine
Cardiovascular Medicine
Molecular Medicine
Advanced Cardiac Imaging
Metrics
H-Index
i10 Index
Citation
14
17
1,011
* Rankings
Ranking Based On Selection :41
Raouf Hajji
Internal Medicine
Rheumatology
Clinical Immunology
Cardiovascular diseases
Metrics
H-Index
i10 Index
Citation
12
13
553
* Rankings
Ranking Based On Selection :46
Ahmed Maidi
Distributed Parameter Systems
Simulation
Optimization
Control
Metrics
H-Index
i10 Index
Citation
11
13
600
* Rankings
Ranking Based On Selection :53
Peter Ekpunobi Chime
General Medicine
Cardiology
Vascular Medicine
Non-communicable Diseases
Metrics
H-Index
i10 Index
Citation
9
8
260
Maha Abdelmoneim Behairy
Internal Medicine Clinical Nephrology Dialysis Transplantation
Metrics
H-Index
i10 Index
Citation
7
5
126
Onyegbutulem Henry Chijioke
Specialist in Endocrinology
Diabetes
Metabolic and HIV Medicine
Metrics
H-Index
i10 Index
Citation
7
6
537
Ali Lounici
Diabète et précision diagnostique
Insulinoresistance
Facteurs de risque cardio-vasculaire
Maladies auto-inflammatoires
Ost
Metrics
H-Index
i10 Index
Citation
6
3
148
* Rankings
Ranking Based On Selection :78
Tamara Phiri
Internal Medicine
COVID-19
Non communicable diseases
Stroke
Metrics
H-Index
i10 Index
Citation
5
4
109
Seham Seif
internal medicine
gastroentrology & hepatology
Metrics
H-Index
i10 Index
Citation
5
3
155
* Rankings
Ranking Based On Selection :82
Boniface Amanee Elias Lumori
Esophago-gastrointestinal diseases
respiratory and cardiovascular disorders
Metrics
H-Index
i10 Index
Citation
5
3
68
Ghada El-Said
hemodialysis
AKI
Lupus nephritis
diabetic nephropathy
Metrics
H-Index
i10 Index
Citation
5
2
69
* Rankings
Ranking Based On Selection :85
Ahmed Muhammad Bashir
Internal Medicine
Intensive Care Unit
Nephrology
Public Health
Non-communicable Diseases
Metrics
H-Index
i10 Index
Citation
5
1
96
* Rankings
Ranking Based On Selection :91
Sanaa S Said
rheumatology
viral hepatitis
internal medicine
quality of life
Metrics
H-Index
i10 Index
Citation
4
4
751
Joseph Edwin Kanu
Internal Medicine/ Gastroenterology & Hepatology/ Diabetes
Metrics
H-Index
i10 Index
Citation
4
3
118
Rankings
Ranking Based On Selection: 1
Nelson Sewankambo
Metrics
H-Index
i10 Index
Citation Counts
91
313
42,878
internal medicine
medical education
clinical epidemiology and biostatistics
health systems management
knowledge translation
Rankings
Ranking Based On Selection: 2
Ferdinand Mugusi
Metrics
H-Index
i10 Index
Citation Counts
55
133
9,694
Rankings
Ranking Based On Selection: 3
Najia Hajjaj Hassouni
Metrics
H-Index
i10 Index
Citation Counts
51
146
8,948
Rankings
Ranking Based On Selection: 4
AJ Brink
Metrics
H-Index
i10 Index
Citation Counts
44
88
11,643
Rankings
Ranking Based On Selection: 5
Abdulrazaq G. Habib
Bayero University Gwarzo Road Kano, Nigeria Nigeria
Metrics
H-Index
i10 Index
Citation Counts
41
91
6,416
Infectious Diseases
Toxicology
snake bite envenomination
vaccines
immunology
Rankings
Ranking Based On Selection: 6
George Bedu-Addo
Metrics
H-Index
i10 Index
Citation Counts
40
68
4,300
Rankings
Ranking Based On Selection: 7
S Kimaiyo|S Kimaiyo, Kimaiyo S
Metrics
H-Index
i10 Index
Citation Counts
39
63
5,561
Rankings
Ranking Based On Selection: 8
Julie Makani
Metrics
H-Index
i10 Index
Citation Counts
38
98
6,269
Health
Internal Medicine
Haematology
Sickle cell Disease
Rankings
Ranking Based On Selection: 9
Paul Rheeder
Metrics
H-Index
i10 Index
Citation Counts
33
82
4,750
Diabetes
Clinical Epidemiology
Hypertension
Cardiovascular disease
Rankings
Ranking Based On Selection: 10
Nakanjako Damalie
Metrics
H-Index
i10 Index
Citation Counts
31
67
3,314
Rankings
Ranking Based On Selection: 11
Mohamed Yahyaoui
Metrics
H-Index
i10 Index
Citation Counts
30
61
4,129
Rankings
Ranking Based On Selection: 12
Lameck Diero
Metrics
H-Index
i10 Index
Citation Counts
28
50
3,090
Internal Medicine
Chest Medicine
Health Informatics
Rankings
Ranking Based On Selection: 13
Samir Assaad Khalil
Metrics
H-Index
i10 Index
Citation Counts
27
40
4,355
Rankings
Ranking Based On Selection: 14
Julius Mwita
Metrics
H-Index
i10 Index
Citation Counts
24
40
3,430
Internal medicine
Cardiovascular diseases
Clinical epidemiology
Rankings
Ranking Based On Selection: 15
Jane Mallewa
Metrics
H-Index
i10 Index
Citation Counts
23
44
2,519
Rankings
Ranking Based On Selection: 16
Samar Tharwat
Metrics
H-Index
i10 Index
Citation Counts
22
40
3,868
Rankings
Ranking Based On Selection: 17
Joseph Mamlin
Metrics
H-Index
i10 Index
Citation Counts
22
29
2,161
Relationship between academic centers Healthcare care systems for under-served population
Internal medicine
Rankings
Ranking Based On Selection: 18
Michael O. Iroezindu
Metrics
H-Index
i10 Index
Citation Counts
21
42
1,818
HIV/AIDS/Antiretroviral therapy
Opportunistic Infections
Community-acquired Pneumonia
Sepsis Syndromes and Malaria
Rankings
Ranking Based On Selection: 19
Heidi Smuts
Metrics
H-Index
i10 Index
Citation Counts
21
33
1,738
Rankings
Ranking Based On Selection: 20
Abraham Siika
Metrics
H-Index
i10 Index
Citation Counts
21
30
1,427
Rankings
Ranking Based On Selection: 21
Yaw Asante Awuku
Metrics
H-Index
i10 Index
Citation Counts
20
29
2,426
Rankings
Ranking Based On Selection: 22
Ahmed Abdel Razik
Metrics
H-Index
i10 Index
Citation Counts
19
28
1,150
infectious diseases-liver cirrhosis-internal medicine
Rankings
Ranking Based On Selection: 23
Michael Adeyemi Olamoyegun
Metrics
H-Index
i10 Index
Citation Counts
19
27
1,097
Diabetes
Cardiovascular medicine
Epidemiology
Lipids
Telemedicine
Rankings
Ranking Based On Selection: 24
Magdy Hamed
Metrics
H-Index
i10 Index
Citation Counts
19
30
2,112
Rankings
Ranking Based On Selection: 25
Somia Abdallah
Metrics
H-Index
i10 Index
Citation Counts
18
25
1,149
Rankings
Ranking Based On Selection: 26
Mekonen Teferi
Metrics
H-Index
i10 Index
Citation Counts
17
21
1,056
Rankings
Ranking Based On Selection: 27
Joseph Adel Mattar Banoub
Metrics
H-Index
i10 Index
Citation Counts
16
16
35,129
Rankings
Ranking Based On Selection: 28
Semvua B. Kilonzo
Metrics
H-Index
i10 Index
Citation Counts
16
25
742
Rankings
Ranking Based On Selection: 29
Badredine Hassam
Metrics
H-Index
i10 Index
Citation Counts
16
28
1,212
Rankings
Ranking Based On Selection: 30
Abdullah Abba
Metrics
H-Index
i10 Index
Citation Counts
16
22
753
Rankings
Ranking Based On Selection: 31
Mostafa Abdelsalam
Metrics
H-Index
i10 Index
Citation Counts
15
21
759
Rankings
Ranking Based On Selection: 32
Richard E Sanya
Metrics
H-Index
i10 Index
Citation Counts
15
16
597
Cardio-metabolic Disorders
Helminths
Allergy
Internal Medicine
Rankings
Ranking Based On Selection: 33
Betty Norman
Metrics
H-Index
i10 Index
Citation Counts
15
21
679
Rankings
Ranking Based On Selection: 34
JJ Andy
Metrics
H-Index
i10 Index
Citation Counts
15
23
882
Rankings
Ranking Based On Selection: 35
Edward B. Attah
Metrics
H-Index
i10 Index
Citation Counts
15
18
537
Rankings
Ranking Based On Selection: 36
Neshaad Schrueder
Metrics
H-Index
i10 Index
Citation Counts
14
15
1,878
Rankings
Ranking Based On Selection: 37
Harold Ayetey
Metrics
H-Index
i10 Index
Citation Counts
14
17
1,011
Internal Medicine
Cardiovascular Medicine
Molecular Medicine
Advanced Cardiac Imaging
Rankings
Ranking Based On Selection: 38
Hussein Elamin
Metrics
H-Index
i10 Index
Citation Counts
14
17
568
Rankings
Ranking Based On Selection: 39
Ibrahim Elmadbouh
Metrics
H-Index
i10 Index
Citation Counts
14
16
702
Rankings
Ranking Based On Selection: 40
Jemima Kamamo
Metrics
H-Index
i10 Index
Citation Counts
12
13
646
Rankings
Ranking Based On Selection: 41
Raouf Hajji
Metrics
H-Index
i10 Index
Citation Counts
12
13
553
Internal Medicine
Rheumatology
Clinical Immunology
Cardiovascular diseases
Rankings
Ranking Based On Selection: 42
Yahya Bensouda
Metrics
H-Index
i10 Index
Citation Counts
12
16
906
Rankings
Ranking Based On Selection: 43
Isaac Kofi Owusu
Metrics
H-Index
i10 Index
Citation Counts
12
12
427
Rankings
Ranking Based On Selection: 44
Benzineb Brahim
Metrics
H-Index
i10 Index
Citation Counts
12
13
436
Rankings
Ranking Based On Selection: 45
Mostafa Ebraheem Morra
Metrics
H-Index
i10 Index
Citation Counts
11
11
839
Rankings
Ranking Based On Selection: 46
Ahmed Maidi
Metrics
H-Index
i10 Index
Citation Counts
11
13
600
Distributed Parameter Systems
Simulation
Optimization
Control
Rankings
Ranking Based On Selection: 47
Rasha Abdelnoor
Metrics
H-Index
i10 Index
Citation Counts
10
12
482
Rankings
Ranking Based On Selection: 48
Mahmoud Ahmed 1
Metrics
H-Index
i10 Index
Citation Counts
10
10
755
Rankings
Ranking Based On Selection: 49
Arthur Ebelenna Anyabolu
Metrics
H-Index
i10 Index
Citation Counts
10
11
579
Rankings
Ranking Based On Selection: 50
Hala Imam
Metrics
H-Index
i10 Index
Citation Counts
10
10
648
Rankings
Ranking Based On Selection: 51
Ehab Eltoraby
Metrics
H-Index
i10 Index
Citation Counts
10
10
391
Rankings
Ranking Based On Selection: 52
Chukwuka Elendu
Metrics
H-Index
i10 Index
Citation Counts
9
9
271
Rankings
Ranking Based On Selection: 53
Peter Ekpunobi Chime
Metrics
H-Index
i10 Index
Citation Counts
9
8
260
General Medicine
Cardiology
Vascular Medicine
Non-communicable Diseases
Rankings
Ranking Based On Selection: 54
Nesreen Ahmed Kotb
Metrics
H-Index
i10 Index
Citation Counts
9
9
236
Rankings
Ranking Based On Selection: 55
Nabil Elkafrawy
Metrics
H-Index
i10 Index
Citation Counts
8
7
375
Rankings
Ranking Based On Selection: 56
Noha Elsayed Esheba
Metrics
H-Index
i10 Index
Citation Counts
8
7
309
Rankings
Ranking Based On Selection: 58
Khaled Mosaad Elhusseiny
Metrics
H-Index
i10 Index
Citation Counts
7
6
468
Rankings
Ranking Based On Selection: 59
Airenakho Emorinken
Metrics
H-Index
i10 Index
Citation Counts
7
5
188
Rankings
Ranking Based On Selection: 60
Mona Tawfik
Metrics
H-Index
i10 Index
Citation Counts
7
5
120
Rankings
Ranking Based On Selection: 61
Heba E Kasem
Metrics
H-Index
i10 Index
Citation Counts
7
3
101
Rankings
Ranking Based On Selection: 62
Caroline Morad
Metrics
H-Index
i10 Index
Citation Counts
7
6
116
Rankings
Ranking Based On Selection: 63
Enas Zahran
Metrics
H-Index
i10 Index
Citation Counts
7
5
234
Rankings
Ranking Based On Selection: 64
Maha Abdelmoneim Behairy
Metrics
H-Index
i10 Index
Citation Counts
7
5
126
Internal Medicine Clinical Nephrology Dialysis Transplantation
Rankings
Ranking Based On Selection: 65
Onyegbutulem Henry Chijioke
Metrics
H-Index
i10 Index
Citation Counts
7
6
537
Specialist in Endocrinology
Diabetes
Metabolic and HIV Medicine
Rankings
Ranking Based On Selection: 66
Elham Ahmed
Metrics
H-Index
i10 Index
Citation Counts
7
6
144
Rankings
Ranking Based On Selection: 67
Samy Khodeir
Metrics
H-Index
i10 Index
Citation Counts
7
5
254
Rankings
Ranking Based On Selection: 68
Abdelsalam Ma Nail
Metrics
H-Index
i10 Index
Citation Counts
7
5
137
Rankings
Ranking Based On Selection: 69
Sanaa Gazareen
Metrics
H-Index
i10 Index
Citation Counts
7
7
431
Rankings
Ranking Based On Selection: 70
Ahmed Abdalazim Dafallah Albashir
Metrics
H-Index
i10 Index
Citation Counts
6
6
474
Rankings
Ranking Based On Selection: 71
Evangeline W. Njiru
Metrics
H-Index
i10 Index
Citation Counts
6
5
214
Rankings
Ranking Based On Selection: 72
Ali Lounici
Metrics
H-Index
i10 Index
Citation Counts
6
3
148
Diabète et précision diagnostique
Insulinoresistance
Facteurs de risque cardio-vasculaire
Maladies auto-inflammatoires
Ost
Rankings
Ranking Based On Selection: 73
Hend G Kotb
Metrics
H-Index
i10 Index
Citation Counts
6
3
75
Rankings
Ranking Based On Selection: 74
Syokau Ilovi
Metrics
H-Index
i10 Index
Citation Counts
6
5
110
Rankings
Ranking Based On Selection: 76
Amina Badr Eldin
Metrics
H-Index
i10 Index
Citation Counts
6
4
111
Rankings
Ranking Based On Selection: 77
Tamiru Shibiru Degaga
Metrics
H-Index
i10 Index
Citation Counts
5
4
221
Rankings
Ranking Based On Selection: 78
Tamara Phiri
Metrics
H-Index
i10 Index
Citation Counts
5
4
109
Internal Medicine
COVID-19
Non communicable diseases
Stroke
Rankings
Ranking Based On Selection: 79
Seham Seif
Metrics
H-Index
i10 Index
Citation Counts
5
3
155
Rankings
Ranking Based On Selection: 80
Amira M Elsayed
Metrics
H-Index
i10 Index
Citation Counts
5
3
118
Rankings
Ranking Based On Selection: 81
Mohammed Keshawy
Metrics
H-Index
i10 Index
Citation Counts
5
3
85
Rankings
Ranking Based On Selection: 82
Boniface Amanee Elias Lumori
Metrics
H-Index
i10 Index
Citation Counts
5
3
68
Esophago-gastrointestinal diseases
respiratory and cardiovascular disorders
Rankings
Ranking Based On Selection: 83
Joshua Falade
Metrics
H-Index
i10 Index
Citation Counts
5
2
97
Rankings
Ranking Based On Selection: 84
Ghada El-Said
Metrics
H-Index
i10 Index
Citation Counts
5
2
69
hemodialysis
AKI
Lupus nephritis
diabetic nephropathy
Rankings
Ranking Based On Selection: 85
Ahmed Muhammad Bashir
Metrics
H-Index
i10 Index
Citation Counts
5
1
96
Internal Medicine
Intensive Care Unit
Nephrology
Public Health
Non-communicable Diseases
Rankings
Ranking Based On Selection: 87
Charles M. Kwoba
Metrics
H-Index
i10 Index
Citation Counts
5
3
106
Rankings
Ranking Based On Selection: 88
Moawia Elbalal
Metrics
H-Index
i10 Index
Citation Counts
5
3
65
Rankings
Ranking Based On Selection: 89
Mohamed E. Enaba
Metrics
H-Index
i10 Index
Citation Counts
5
5
216
Rankings
Ranking Based On Selection: 90
Amira Farouk Mohammed Barakat
Metrics
H-Index
i10 Index
Citation Counts
5
4
205
Rankings
Ranking Based On Selection: 91
Sanaa S Said
Metrics
H-Index
i10 Index
Citation Counts
4
4
751
rheumatology
viral hepatitis
internal medicine
quality of life
Rankings
Ranking Based On Selection: 92
Moaz Alwarfalli
Metrics
H-Index
i10 Index
Citation Counts
4
4
296
Rankings
Ranking Based On Selection: 93
Fatma Mohammed Badr
Metrics
H-Index
i10 Index
Citation Counts
4
4
79
Rankings
Ranking Based On Selection: 94
Joseph Edwin Kanu
Metrics
H-Index
i10 Index
Citation Counts
4
3
118
Internal Medicine/ Gastroenterology & Hepatology/ Diabetes
Rankings
Ranking Based On Selection: 95
Osama Abdel Latif
Metrics
H-Index
i10 Index
Citation Counts
4
2
63
Rankings
Ranking Based On Selection: 96
Seham Omar
Metrics
H-Index
i10 Index
Citation Counts
4
2
55
Rankings
Ranking Based On Selection: 97
Essam Kotb
Metrics
H-Index
i10 Index
Citation Counts
4
1
486
Rankings
Ranking Based On Selection: 98
Elisha Osati
Metrics
H-Index
i10 Index
Citation Counts
4
1
74
Rankings
Ranking Based On Selection: 99
Ghada Abdelrahman Ahmed Mohamed
Metrics
H-Index
i10 Index
Citation Counts
4
1
61