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" (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
Rohollah Kalhor
health services management
health economics
health promoting hospitals
Metrics
H-Index
i10 Index
Citation
49
84
40,778
* Rankings
Ranking Based On Selection :3
Zainab Alimoradi
Reproductive health
Adolescent Reproductive health
Metrics
H-Index
i10 Index
Citation
34
67
4,109
* Rankings
Ranking Based On Selection :4
Ahad Alizadeh
Bayesian data analysis
Causal Inference
R & Python Programming
Metrics
H-Index
i10 Index
Citation
31
83
3,217
* Rankings
Ranking Based On Selection :9
Reza Ghanbari
Environmental Health Engineering
Metrics
H-Index
i10 Index
Citation
26
35
2,996
* Rankings
Ranking Based On Selection :10
Zohreh Yazdi
medical education
clinical psychology
occupational medicine
Metrics
H-Index
i10 Index
Citation
26
42
2,126
* Rankings
Ranking Based On Selection :13
maryam javadi
dietary pattern
sleep
Noncommunicable_diseases
lifestyle
Metrics
H-Index
i10 Index
Citation
24
49
2,350
* Rankings
Ranking Based On Selection :19
Omid Khosravizadeh
Health Service Management
cancer prevention Management
Medical services Branding
Health Market
Metrics
H-Index
i10 Index
Citation
19
37
1,995
* Rankings
Ranking Based On Selection :20
Ameneh Barikani
Social Medicine
communicable and non communicable disease Epidemiology
women health
high risk behavior
Metrics
H-Index
i10 Index
Citation
19
32
1,230
* Rankings
Ranking Based On Selection :31
Samaneh Rouhi
Nosocomial infection
Antibiotic resistance
Fungal Toxin
Metrics
H-Index
i10 Index
Citation
16
26
705
* Rankings
Ranking Based On Selection :33
Rafat Mohebbifar
Health management
Strategic Planning
Education
Human Resources
Health Quality
Metrics
H-Index
i10 Index
Citation
15
25
1,006
* Rankings
Ranking Based On Selection :35
Reza Zeighami
nursing
mental health
qualitative research
educational management
psychiatric nursing
Metrics
H-Index
i10 Index
Citation
14
20
600
* Rankings
Ranking Based On Selection :39
Hajie Lotfi
medical biotechnology
cloning
recombinant protein
probiotics
bioinformatics
Metrics
H-Index
i10 Index
Citation
13
15
703
* Rankings
Ranking Based On Selection :44
Maryam Tofangchiha
dental and maxillofacial imaging
cone beam CT
root canal therapy
oral medicine and disease
oral radiology
Metrics
H-Index
i10 Index
Citation
12
21
626
* Rankings
Ranking Based On Selection :46
Ahmad Nikpey
air pollution control
industrial ventilation
phtochemistry
biotechnology
Metrics
H-Index
i10 Index
Citation
12
14
519
* Rankings
Ranking Based On Selection :52
Saeid Ahmadi
Occupational health
Noise Reduction
Industrial safety
Metrics
H-Index
i10 Index
Citation
10
10
557
* Rankings
Ranking Based On Selection :53
Ehsan Aali|دکتر احسان عالی
Pharmacology
Pharmacotherapy
Novel Formulation
Obesity
Endocrinology
Metrics
H-Index
i10 Index
Citation
10
10
332
Ghazaleh Mohammadi
Molecular Medicine/ Molecular Neuroscience
Metrics
H-Index
i10 Index
Citation
9
9
287
Payam Heydari
Ergonomics
Human Factor
Fitness for Work
Human Performance
Mental Workload
Metrics
H-Index
i10 Index
Citation
8
5
154
Fatemeh Kazemi
Internal Medicine
Gynecology and Obstetrics
Neurology
Metrics
H-Index
i10 Index
Citation
7
6
181
Hossein Ahmadpour Yazdi
Nanomedicine
Medical biotechnology
Clinical labaratory sciences
Metrics
H-Index
i10 Index
Citation
7
3
171
Hamid Sadeghi
Re/emerging Infectious Diseases
Meta-analysis
Metrics
H-Index
i10 Index
Citation
7
6
163
Sara Rahimi
qualitative reasearch
chronic disease
Religious
spiritual and multicultural studies
Metrics
H-Index
i10 Index
Citation
6
5
167
Kousar Ramezani
Tissue engineering
Regenerative medicine
Biomaterials
Cancer research
Medical Imaging
Metrics
H-Index
i10 Index
Citation
4
4
127
Arina Qolizadeh
infant and child diseases
neonatal intensive care
premature newborns
Metrics
H-Index
i10 Index
Citation
4
4
80
Rankings
Ranking Based On Selection: 1
Rohollah Kalhor
Metrics
H-Index
i10 Index
Citation Counts
49
84
40,778
health services management
health economics
health promoting hospitals
Rankings
Ranking Based On Selection: 2
Mohammad Ali Soleimani
Metrics
H-Index
i10 Index
Citation Counts
35
76
3,146
Rankings
Ranking Based On Selection: 3
Zainab Alimoradi
Metrics
H-Index
i10 Index
Citation Counts
34
67
4,109
Reproductive health
Adolescent Reproductive health
Rankings
Ranking Based On Selection: 4
Ahad Alizadeh
Metrics
H-Index
i10 Index
Citation Counts
31
83
3,217
Bayesian data analysis
Causal Inference
R & Python Programming
Rankings
Ranking Based On Selection: 5
Razzagh Mahmoudi
Metrics
H-Index
i10 Index
Citation Counts
30
93
5,481
Rankings
Ranking Based On Selection: 6
Hossein Rafiei
Metrics
H-Index
i10 Index
Citation Counts
30
70
2,708
Rankings
Ranking Based On Selection: 7
sima rafiei
Metrics
H-Index
i10 Index
Citation Counts
28
68
4,769
Rankings
Ranking Based On Selection: 8
Mohammad mahdi Emamjomeh
Metrics
H-Index
i10 Index
Citation Counts
27
49
3,844
Rankings
Ranking Based On Selection: 9
Reza Ghanbari
Metrics
H-Index
i10 Index
Citation Counts
26
35
2,996
Environmental Health Engineering
Rankings
Ranking Based On Selection: 10
Zohreh Yazdi
Metrics
H-Index
i10 Index
Citation Counts
26
42
2,126
medical education
clinical psychology
occupational medicine
Rankings
Ranking Based On Selection: 11
Isa mohammadi zeidi
Metrics
H-Index
i10 Index
Citation Counts
25
63
3,149
Rankings
Ranking Based On Selection: 12
Amir Peymani
Metrics
H-Index
i10 Index
Citation Counts
25
42
1,766
Rankings
Ranking Based On Selection: 13
maryam javadi
Metrics
H-Index
i10 Index
Citation Counts
24
49
2,350
dietary pattern
sleep
Noncommunicable_diseases
lifestyle
Rankings
Ranking Based On Selection: 14
Amir Javadi
Metrics
H-Index
i10 Index
Citation Counts
24
56
2,441
Rankings
Ranking Based On Selection: 15
Hossein Khadem Highian
Metrics
H-Index
i10 Index
Citation Counts
22
40
1,574
Rankings
Ranking Based On Selection: 17
Farzad Rajaei
Metrics
H-Index
i10 Index
Citation Counts
22
36
1,140
Rankings
Ranking Based On Selection: 18
Sima Hashemipour
Metrics
H-Index
i10 Index
Citation Counts
21
29
1,614
Rankings
Ranking Based On Selection: 19
Omid Khosravizadeh
Metrics
H-Index
i10 Index
Citation Counts
19
37
1,995
Health Service Management
cancer prevention Management
Medical services Branding
Health Market
Rankings
Ranking Based On Selection: 20
Ameneh Barikani
Metrics
H-Index
i10 Index
Citation Counts
19
32
1,230
Social Medicine
communicable and non communicable disease Epidemiology
women health
high risk behavior
Rankings
Ranking Based On Selection: 21
Seyyed Mehdi Mirhashemi
Metrics
H-Index
i10 Index
Citation Counts
18
26
1,153
Rankings
Ranking Based On Selection: 22
Amir Mohammad Kazemifar
Metrics
H-Index
i10 Index
Citation Counts
18
32
1,116
Rankings
Ranking Based On Selection: 23
Sina Abdollahzade
Metrics
H-Index
i10 Index
Citation Counts
18
27
1,402
Rankings
Ranking Based On Selection: 24
Seyedeh Ameneh Motalebi
Metrics
H-Index
i10 Index
Citation Counts
17
26
925
Rankings
Ranking Based On Selection: 25
Hassan Jahanihashemi
Metrics
H-Index
i10 Index
Citation Counts
17
25
705
Rankings
Ranking Based On Selection: 27
Neda Esmailzadehha
Metrics
H-Index
i10 Index
Citation Counts
17
25
705
Rankings
Ranking Based On Selection: 28
Seyed Mahmoud Amin Marashi
Metrics
H-Index
i10 Index
Citation Counts
17
23
870
Rankings
Ranking Based On Selection: 29
Hashem hdoost Yazdi
Metrics
H-Index
i10 Index
Citation Counts
17
23
595
Neuroscience
neurodegenerative disease
Ion channels
Rankings
Ranking Based On Selection: 30
Marzieh Beigom Khezri
Metrics
H-Index
i10 Index
Citation Counts
16
20
772
Rankings
Ranking Based On Selection: 31
Samaneh Rouhi
Metrics
H-Index
i10 Index
Citation Counts
16
26
705
Nosocomial infection
Antibiotic resistance
Fungal Toxin
Rankings
Ranking Based On Selection: 33
Rafat Mohebbifar
Metrics
H-Index
i10 Index
Citation Counts
15
25
1,006
Health management
Strategic Planning
Education
Human Resources
Health Quality
Rankings
Ranking Based On Selection: 34
Jalil Azimian
Metrics
H-Index
i10 Index
Citation Counts
14
25
683
Rankings
Ranking Based On Selection: 35
Reza Zeighami
Metrics
H-Index
i10 Index
Citation Counts
14
20
600
nursing
mental health
qualitative research
educational management
psychiatric nursing
Rankings
Ranking Based On Selection: 36
Mohammadali Zohal
Metrics
H-Index
i10 Index
Citation Counts
14
15
769
Rankings
Ranking Based On Selection: 37
Farhad Nikkhahi
Metrics
H-Index
i10 Index
Citation Counts
13
14
564
Rankings
Ranking Based On Selection: 39
Hajie Lotfi
Metrics
H-Index
i10 Index
Citation Counts
13
15
703
medical biotechnology
cloning
recombinant protein
probiotics
bioinformatics
Rankings
Ranking Based On Selection: 40
Hamideh Pakniat
Metrics
H-Index
i10 Index
Citation Counts
13
16
532
Rankings
Ranking Based On Selection: 41
Abbas Allami
Metrics
H-Index
i10 Index
Citation Counts
13
15
625
Rankings
Ranking Based On Selection: 42
Monir Mirzadeh
Metrics
H-Index
i10 Index
Citation Counts
12
17
846
Rankings
Ranking Based On Selection: 44
Maryam Tofangchiha
Metrics
H-Index
i10 Index
Citation Counts
12
21
626
dental and maxillofacial imaging
cone beam CT
root canal therapy
oral medicine and disease
oral radiology
Rankings
Ranking Based On Selection: 45
Fatemeh Sabbaghziarani
Metrics
H-Index
i10 Index
Citation Counts
12
12
600
Rankings
Ranking Based On Selection: 46
Ahmad Nikpey
Metrics
H-Index
i10 Index
Citation Counts
12
14
519
air pollution control
industrial ventilation
phtochemistry
biotechnology
Rankings
Ranking Based On Selection: 47
Maryam Momeni
Metrics
H-Index
i10 Index
Citation Counts
11
12
331
Rankings
Ranking Based On Selection: 48
Hossein Mozhdehipanah
Metrics
H-Index
i10 Index
Citation Counts
11
11
456
Rankings
Ranking Based On Selection: 49
Behzad Bijani
Metrics
H-Index
i10 Index
Citation Counts
11
13
390
Rankings
Ranking Based On Selection: 50
Kazem Hosseinzadeh
Metrics
H-Index
i10 Index
Citation Counts
11
12
458
Rankings
Ranking Based On Selection: 51
Yazdan Naderi
Metrics
H-Index
i10 Index
Citation Counts
10
10
474
Rankings
Ranking Based On Selection: 52
Saeid Ahmadi
Metrics
H-Index
i10 Index
Citation Counts
10
10
557
Occupational health
Noise Reduction
Industrial safety
Rankings
Ranking Based On Selection: 53
Ehsan Aali|دکتر احسان عالی
Metrics
H-Index
i10 Index
Citation Counts
10
10
332
Pharmacology
Pharmacotherapy
Novel Formulation
Obesity
Endocrinology
Rankings
Ranking Based On Selection: 54
Mohammad Sofiabadi
Metrics
H-Index
i10 Index
Citation Counts
10
12
372
Rankings
Ranking Based On Selection: 55
Aliakbar Hajiaghamohammadi
Metrics
H-Index
i10 Index
Citation Counts
9
9
534
Rankings
Ranking Based On Selection: 56
Fatemeh Khodabandehloo
Metrics
H-Index
i10 Index
Citation Counts
9
9
312
Rankings
Ranking Based On Selection: 57
Ghazaleh Mohammadi
Metrics
H-Index
i10 Index
Citation Counts
9
9
287
Molecular Medicine/ Molecular Neuroscience
Rankings
Ranking Based On Selection: 58
Psychotherapy
Mental health
personality assessment
Neuropsychology
Rankings
Ranking Based On Selection: 60
Forouzan Olfati
Metrics
H-Index
i10 Index
Citation Counts
9
9
335
Rankings
Ranking Based On Selection: 61
Mahdieh Zarabadipour
Metrics
H-Index
i10 Index
Citation Counts
8
7
258
Rankings
Ranking Based On Selection: 62
Mahsa Esfehani
Metrics
H-Index
i10 Index
Citation Counts
8
8
327
Rankings
Ranking Based On Selection: 63
Farideh Movahed
Metrics
H-Index
i10 Index
Citation Counts
8
8
323
Rankings
Ranking Based On Selection: 64
Amir Farzam
Metrics
H-Index
i10 Index
Citation Counts
8
7
208
Rankings
Ranking Based On Selection: 65
M Taherpour
Metrics
H-Index
i10 Index
Citation Counts
8
7
142
Rankings
Ranking Based On Selection: 66
Payam Heydari
Metrics
H-Index
i10 Index
Citation Counts
8
5
154
Ergonomics
Human Factor
Fitness for Work
Human Performance
Mental Workload
Rankings
Ranking Based On Selection: 67
Hamid Kayalha
Metrics
H-Index
i10 Index
Citation Counts
8
5
212
Rankings
Ranking Based On Selection: 68
Mohammad Ali hosseini
Metrics
H-Index
i10 Index
Citation Counts
7
7
1,752
Rankings
Ranking Based On Selection: 69
Niloofar Khairkhah
Metrics
H-Index
i10 Index
Citation Counts
7
7
234
Gene therapy
Gene Editing
CRISPR
miRNA Therapeutics
Rankings
Ranking Based On Selection: 70
Javaneh Atighi
Metrics
H-Index
i10 Index
Citation Counts
7
6
211
Rankings
Ranking Based On Selection: 71
Fatemeh Kazemi
Metrics
H-Index
i10 Index
Citation Counts
7
6
181
Internal Medicine
Gynecology and Obstetrics
Neurology
Rankings
Ranking Based On Selection: 72
Hossein Ahmadpour Yazdi
Metrics
H-Index
i10 Index
Citation Counts
7
3
171
Nanomedicine
Medical biotechnology
Clinical labaratory sciences
Rankings
Ranking Based On Selection: 74
Hamidreza Javadi
Metrics
H-Index
i10 Index
Citation Counts
7
7
297
Rankings
Ranking Based On Selection: 75
Ramin Sarchami
Metrics
H-Index
i10 Index
Citation Counts
7
6
279
Rankings
Ranking Based On Selection: 76
Hamid Sadeghi
Metrics
H-Index
i10 Index
Citation Counts
7
6
163
Re/emerging Infectious Diseases
Meta-analysis
Rankings
Ranking Based On Selection: 77
Farid Hajiali
Metrics
H-Index
i10 Index
Citation Counts
7
5
342
Rankings
Ranking Based On Selection: 78
Somayeh Fallah
Metrics
H-Index
i10 Index
Citation Counts
7
5
121
Rankings
Ranking Based On Selection: 79
Fereshteh Abdolmaleki
Metrics
H-Index
i10 Index
Citation Counts
6
5
435
Rankings
Ranking Based On Selection: 80
Sara Rahimi
Metrics
H-Index
i10 Index
Citation Counts
6
5
167
qualitative reasearch
chronic disease
Religious
spiritual and multicultural studies
Rankings
Ranking Based On Selection: 81
Faezeh Azmoudeh
Metrics
H-Index
i10 Index
Citation Counts
6
4
120
Rankings
Ranking Based On Selection: 82
Razieh Jabbarian
Metrics
H-Index
i10 Index
Citation Counts
5
5
166
Rankings
Ranking Based On Selection: 84
Afsaneh Yakhforoshha
Metrics
H-Index
i10 Index
Citation Counts
5
3
95
Rankings
Ranking Based On Selection: 85
Dariush Hamedi Asl
Metrics
H-Index
i10 Index
Citation Counts
5
3
77
Rankings
Ranking Based On Selection: 86
Maryam Mafi
Metrics
H-Index
i10 Index
Citation Counts
5
3
76
Rankings
Ranking Based On Selection: 88
Gholamhassan Shahbazi
Metrics
H-Index
i10 Index
Citation Counts
5
2
54
Rankings
Ranking Based On Selection: 90
Kousar Ramezani
Metrics
H-Index
i10 Index
Citation Counts
4
4
127
Tissue engineering
Regenerative medicine
Biomaterials
Cancer research
Medical Imaging
Rankings
Ranking Based On Selection: 91
Arina Qolizadeh
Metrics
H-Index
i10 Index
Citation Counts
4
4
80
infant and child diseases
neonatal intensive care
premature newborns
Rankings
Ranking Based On Selection: 93
Fatemeh Heydari
Metrics
H-Index
i10 Index
Citation Counts
4
3
55
Rankings
Ranking Based On Selection: 95
Bijan Samavat
Metrics
H-Index
i10 Index
Citation Counts
3
3
83
Rankings
Ranking Based On Selection: 96
Rita Bagherian
Metrics
H-Index
i10 Index
Citation Counts
3
2
87
Rankings
Ranking Based On Selection: 97
Shahrzad Gholami
Metrics
H-Index
i10 Index
Citation Counts
3
2
69
library and information science
information retrieval
Rankings
Ranking Based On Selection: 98
Ali Sarbazi GolezariMd
Metrics
H-Index
i10 Index
Citation Counts
3
2
68
Rankings
Ranking Based On Selection: 99
Mohammad Bokharaei
Metrics
H-Index
i10 Index
Citation Counts
3
2
57
Nursing care
Operating Room
ICU
Critical Care
Pressure Ulcer