Top 100 Scientists

World 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" (870,057 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
Shahrad Taheri
Clinical Trials
Obesity
Diabetes
Nutrition
Sleep
Metrics
H-Index
i10 Index
Citation
60
135
22,002
* Rankings
Ranking Based On Selection: 2
Naveed Akhtar
Vascular Neurology
Metrics
H-Index
i10 Index
Citation
48
168
11,630
* Rankings
Ranking Based On Selection: 3
Aksam Yassin
sexual medicine
endocrine
prostate
prevention
Metrics
H-Index
i10 Index
Citation
41
68
5,188
* Rankings
Ranking Based On Selection: 4
Ali Ait Hssain
Sepsis - ECMO- Nutrition - Simulation
Metrics
H-Index
i10 Index
Citation
35
61
7,173
* Rankings
Ranking Based On Selection: 6
Mohammad Asim
Clinical Research
Metrics
H-Index
i10 Index
Citation
32
94
3,429
* Rankings
Ranking Based On Selection: 7
Haitham Elbardisi
Andrology
male infertility
ICSI
hypogonadism
erectile dysfunction
Metrics
H-Index
i10 Index
Citation
26
42
2,268
* Rankings
Ranking Based On Selection: 8
Abdelfatteh El Omri
Healthcare
Pharma
Nano-Biotech
Bio-engineering
Metrics
H-Index
i10 Index
Citation
25
39
2,803
* Rankings
Ranking Based On Selection: 9
Maysaloun Merhi
oncology immunology and immunotherapy
Metrics
H-Index
i10 Index
Citation
24
35
2,622
* Rankings
Ranking Based On Selection: 10
Manjunath Ramanjaneya
obesity
diabetes and metabolic syndrome
Metrics
H-Index
i10 Index
Citation
21
32
2,152

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! 

* Rankings
Ranking Based On Selection: 12
Hadi Fayad
Medical imaging
Metrics
H-Index
i10 Index
Citation
18
28
1,257
* Rankings
Ranking Based On Selection: 13
Fouad Azizi
Cancer
Leukemia
airway epithelium
lung diseases
Cannabidiol
Metrics
H-Index
i10 Index
Citation
18
25
6,298
* Rankings
Ranking Based On Selection: 14
Raed M Al-Zoubi
Biomarkers and Drug Candidates
Metrics
H-Index
i10 Index
Citation
17
35
1,894
* Rankings
Ranking Based On Selection: 15
Moza Al Hail
Medication Errors
Quality and Patient Safety
Metrics
H-Index
i10 Index
Citation
17
27
841
* Rankings
Ranking Based On Selection: 18
Ahmed Zaqout
Medicine
Infectious disease
Metrics
H-Index
i10 Index
Citation
14
16
793
* Rankings
Ranking Based On Selection: 19
Fatma Ben Abid
Medicine
Infectious Diseases
Metrics
H-Index
i10 Index
Citation
14
16
514
* Rankings
Ranking Based On Selection: 20
Azza Adel Hassan
Oncology and Palliative Medicine
Metrics
H-Index
i10 Index
Citation
14
20
942
* Rankings
Ranking Based On Selection: 22
Ahmad İskandarani
Cancer
Diabetes
Obesity
Metabolic syndromes
Immunology
Metrics
H-Index
i10 Index
Citation
12
12
456
* Rankings
Ranking Based On Selection: 23
Pallivalappila Abdulrouf
Medication safety
Complementary and alternative medicine
Metrics
H-Index
i10 Index
Citation
11
12
471
* Rankings
Ranking Based On Selection: 25
Sameera Rashid
Breast cancer
womens health
Gynecology
pathology
cancer
Metrics
H-Index
i10 Index
Citation
11
14
776
* Rankings
Ranking Based On Selection: 28
Loua Al Shaikh
prehospital care
critical care
Metrics
H-Index
i10 Index
Citation
10
11
1,139
* Rankings
Ranking Based On Selection: 30
Ammar Almadani
Trauma and Critical Care Surgery
Metrics
H-Index
i10 Index
Citation
9
9
321
* Rankings
Ranking Based On Selection: 31
Rania Ibrahim
Dialysis
Quality of life
Depression
Diabetes Mullites
Motor performance
Metrics
H-Index
i10 Index
Citation
8
8
349
* Rankings
Ranking Based On Selection: 32
Yahya Hani
Clinical Research
medicine
Metrics
H-Index
i10 Index
Citation
8
7
158
* Rankings
Ranking Based On Selection: 33
James Laughton
Quality
Quality Improvement
Patient Safety
Risk Management
Deming
Metrics
H-Index
i10 Index
Citation
8
5
260
* Rankings
Ranking Based On Selection: 34
Anas A Ashour
Medical research
Internal Medicine
Cancer metastasis
Water-pipe smoking
Metrics
H-Index
i10 Index
Citation
8
5
96
* Rankings
Ranking Based On Selection: 35
Yasser Saeed Khan
Neurodevelopmental disorders
Anxiety disorders
Metrics
H-Index
i10 Index
Citation
7
7
148
* Rankings
Ranking Based On Selection: 36
Ian Howard
Clinical analytics
Clinical research
Epidemiology
Patient Safety
Health Services Research
Metrics
H-Index
i10 Index
Citation
7
6
206
* Rankings
Ranking Based On Selection: 38
Olubusola Amu
endometriosis
minimal access surgery
Metrics
H-Index
i10 Index
Citation
7
7
596
* Rankings
Ranking Based On Selection: 40
Brightlin Dhas
Occupational therapy
occupational science
play
Metrics
H-Index
i10 Index
Citation
6
5
90
* Rankings
Ranking Based On Selection: 41
Ibrahem Abdalhakam
Diabetes
Obesity and Metabolism
Insulin Resistance
Euglycemic Hyperinsulinemic clamps
Metrics
H-Index
i10 Index
Citation
6
4
96
* Rankings
Ranking Based On Selection: 42
Amna Gameil|Amna Gamil, Amna Gamiel
Myeloid malignancies and stem cell transplant
Metrics
H-Index
i10 Index
Citation
5
2
79
* Rankings
Ranking Based On Selection: 48
Fiona Milligan
Public health cardiology obesity
Metrics
H-Index
i10 Index
Citation
4
3
79
* Rankings
Ranking Based On Selection: 50
George Joy
mental health
resilience
Metrics
H-Index
i10 Index
Citation
3
2
51
* Rankings
Ranking Based On Selection: 52
Dawoud Al Kindi
Medicine
Cardiology
Heart disease
Informatics
Health management
Metrics
H-Index
i10 Index
Citation
3
0
11
Rankings
Ranking Based On Selection: 1
Shahrad Taheri
Metrics
H-Index
i10 Index
Citation Counts
60
135
22,002
Clinical Trials
Obesity
Diabetes
Nutrition
Sleep
Rankings
Ranking Based On Selection: 2
Naveed Akhtar
Metrics
H-Index
i10 Index
Citation Counts
48
168
11,630
Rankings
Ranking Based On Selection: 3
Aksam Yassin
Metrics
H-Index
i10 Index
Citation Counts
41
68
5,188
sexual medicine
endocrine
prostate
prevention
Rankings
Ranking Based On Selection: 4
Ali Ait Hssain
Metrics
H-Index
i10 Index
Citation Counts
35
61
7,173
Sepsis - ECMO- Nutrition - Simulation
Rankings
Ranking Based On Selection: 5
Joerg Buddenkotte
Metrics
H-Index
i10 Index
Citation Counts
34
51
6,804
Rankings
Ranking Based On Selection: 6
Mohammad Asim
Metrics
H-Index
i10 Index
Citation Counts
32
94
3,429
Rankings
Ranking Based On Selection: 7
Haitham Elbardisi
Metrics
H-Index
i10 Index
Citation Counts
26
42
2,268
Andrology
male infertility
ICSI
hypogonadism
erectile dysfunction
Rankings
Ranking Based On Selection: 8
Abdelfatteh El Omri
Metrics
H-Index
i10 Index
Citation Counts
25
39
2,803
Healthcare
Pharma
Nano-Biotech
Bio-engineering
Rankings
Ranking Based On Selection: 9
Maysaloun Merhi
Metrics
H-Index
i10 Index
Citation Counts
24
35
2,622
oncology immunology and immunotherapy
Rankings
Ranking Based On Selection: 10
Manjunath Ramanjaneya
Metrics
H-Index
i10 Index
Citation Counts
21
32
2,152
obesity
diabetes and metabolic syndrome

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! 

Rankings
Ranking Based On Selection: 11
Susanna Akiki|Susanna Wilkes
Metrics
H-Index
i10 Index
Citation Counts
21
26
2,402
Rankings
Ranking Based On Selection: 12
Hadi Fayad
Metrics
H-Index
i10 Index
Citation Counts
18
28
1,257
Rankings
Ranking Based On Selection: 13
Fouad Azizi
Metrics
H-Index
i10 Index
Citation Counts
18
25
6,298
Cancer
Leukemia
airway epithelium
lung diseases
Cannabidiol
Rankings
Ranking Based On Selection: 14
Raed M Al-Zoubi
Metrics
H-Index
i10 Index
Citation Counts
17
35
1,894
Biomarkers and Drug Candidates
Rankings
Ranking Based On Selection: 15
Moza Al Hail
Metrics
H-Index
i10 Index
Citation Counts
17
27
841
Medication Errors
Quality and Patient Safety
Rankings
Ranking Based On Selection: 16
Abdullah Hamad
Metrics
H-Index
i10 Index
Citation Counts
15
19
595
Rankings
Ranking Based On Selection: 17
Mohammed Alhatou
Metrics
H-Index
i10 Index
Citation Counts
14
19
1,230
Rankings
Ranking Based On Selection: 18
Ahmed Zaqout
Metrics
H-Index
i10 Index
Citation Counts
14
16
793
Medicine
Infectious disease
Rankings
Ranking Based On Selection: 19
Fatma Ben Abid
Metrics
H-Index
i10 Index
Citation Counts
14
16
514
Medicine
Infectious Diseases
Rankings
Ranking Based On Selection: 20
Azza Adel Hassan
Metrics
H-Index
i10 Index
Citation Counts
14
20
942
Oncology and Palliative Medicine
Rankings
Ranking Based On Selection: 21
Kakil Rasul
Metrics
H-Index
i10 Index
Citation Counts
14
18
1,022
Rankings
Ranking Based On Selection: 22
Ahmad İskandarani
Metrics
H-Index
i10 Index
Citation Counts
12
12
456
Cancer
Diabetes
Obesity
Metabolic syndromes
Immunology
Rankings
Ranking Based On Selection: 23
Pallivalappila Abdulrouf
Metrics
H-Index
i10 Index
Citation Counts
11
12
471
Medication safety
Complementary and alternative medicine
Rankings
Ranking Based On Selection: 24
Huseyin Ede
Metrics
H-Index
i10 Index
Citation Counts
11
15
656
Rankings
Ranking Based On Selection: 25
Sameera Rashid
Metrics
H-Index
i10 Index
Citation Counts
11
14
776
Breast cancer
womens health
Gynecology
pathology
cancer
Rankings
Ranking Based On Selection: 26
Rayan S Terkawi
Metrics
H-Index
i10 Index
Citation Counts
10
10
566
Rankings
Ranking Based On Selection: 27
Muna Abed Alah
Metrics
H-Index
i10 Index
Citation Counts
10
10
317
Rankings
Ranking Based On Selection: 28
Loua Al Shaikh
Metrics
H-Index
i10 Index
Citation Counts
10
11
1,139
prehospital care
critical care
Rankings
Ranking Based On Selection: 29
M Petkar
Metrics
H-Index
i10 Index
Citation Counts
9
9
610
Rankings
Ranking Based On Selection: 30
Ammar Almadani
Metrics
H-Index
i10 Index
Citation Counts
9
9
321
Trauma and Critical Care Surgery
Rankings
Ranking Based On Selection: 31
Rania Ibrahim
Metrics
H-Index
i10 Index
Citation Counts
8
8
349
Dialysis
Quality of life
Depression
Diabetes Mullites
Motor performance
Rankings
Ranking Based On Selection: 32
Yahya Hani
Metrics
H-Index
i10 Index
Citation Counts
8
7
158
Clinical Research
medicine
Rankings
Ranking Based On Selection: 33
James Laughton
Metrics
H-Index
i10 Index
Citation Counts
8
5
260
Quality
Quality Improvement
Patient Safety
Risk Management
Deming
Rankings
Ranking Based On Selection: 34
Anas A Ashour
Metrics
H-Index
i10 Index
Citation Counts
8
5
96
Medical research
Internal Medicine
Cancer metastasis
Water-pipe smoking
Rankings
Ranking Based On Selection: 35
Yasser Saeed Khan
Metrics
H-Index
i10 Index
Citation Counts
7
7
148
Neurodevelopmental disorders
Anxiety disorders
Rankings
Ranking Based On Selection: 36
Ian Howard
Metrics
H-Index
i10 Index
Citation Counts
7
6
206
Clinical analytics
Clinical research
Epidemiology
Patient Safety
Health Services Research
Rankings
Ranking Based On Selection: 37
Mohamad M Alkadi
Metrics
H-Index
i10 Index
Citation Counts
7
6
193
Rankings
Ranking Based On Selection: 38
Olubusola Amu
Metrics
H-Index
i10 Index
Citation Counts
7
7
596
endometriosis
minimal access surgery
Rankings
Ranking Based On Selection: 39
Pragati Rai
Metrics
H-Index
i10 Index
Citation Counts
6
6
166
Rankings
Ranking Based On Selection: 40
Brightlin Dhas
Metrics
H-Index
i10 Index
Citation Counts
6
5
90
Occupational therapy
occupational science
play
Rankings
Ranking Based On Selection: 41
Ibrahem Abdalhakam
Metrics
H-Index
i10 Index
Citation Counts
6
4
96
Diabetes
Obesity and Metabolism
Insulin Resistance
Euglycemic Hyperinsulinemic clamps
Rankings
Ranking Based On Selection: 42
Amna Gameil|Amna Gamil, Amna Gamiel
Metrics
H-Index
i10 Index
Citation Counts
5
2
79
Myeloid malignancies and stem cell transplant
Rankings
Ranking Based On Selection: 43
Abdulaziz Zafar
Metrics
H-Index
i10 Index
Citation Counts
5
2
61
Rankings
Ranking Based On Selection: 44
Nuri Abdurraheim
Metrics
H-Index
i10 Index
Citation Counts
5
4
373
Rankings
Ranking Based On Selection: 45
Rand A Alattar
Metrics
H-Index
i10 Index
Citation Counts
4
3
398
Rankings
Ranking Based On Selection: 46
Yasser Shouman
Metrics
H-Index
i10 Index
Citation Counts
4
3
244
Rankings
Ranking Based On Selection: 47
Hussam Almasri
Metrics
H-Index
i10 Index
Citation Counts
4
3
79
Rankings
Ranking Based On Selection: 48
Fiona Milligan
Metrics
H-Index
i10 Index
Citation Counts
4
3
79
Public health cardiology obesity
Rankings
Ranking Based On Selection: 49
Salma Taha
Metrics
H-Index
i10 Index
Citation Counts
3
2
54
Rankings
Ranking Based On Selection: 50
George Joy
Metrics
H-Index
i10 Index
Citation Counts
3
2
51
mental health
resilience
Rankings
Ranking Based On Selection: 51
Dalia Albahari
Metrics
H-Index
i10 Index
Citation Counts
3
0
18
Rankings
Ranking Based On Selection: 52
Dawoud Al Kindi
Metrics
H-Index
i10 Index
Citation Counts
3
0
11
Medicine
Cardiology
Heart disease
Informatics
Health management
Rankings
Ranking Based On Selection: 53
Hatem Abdulmajeed
Metrics
H-Index
i10 Index
Citation Counts
2
1
34
Rankings
Ranking Based On Selection: 54
Nidheesh Chooriyil
Metrics
H-Index
i10 Index
Citation Counts
1
1
13
Rankings
Ranking Based On Selection: 55
Abdulwahab Hamid
Metrics
H-Index
i10 Index
Citation Counts
1
0
7