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: 2
Jalil Jaafari
Environmental engineering
Air pollution
wastewater treatment
waste managment
Metrics
H-Index
i10 Index
Citation
52
83
26,368
* Rankings
Ranking Based On Selection: 4
Mehryar Habibi Roudkenar
Cancer
stem cell
oxidative stress
Recombinant DNA technology
Mitochondria
Metrics
H-Index
i10 Index
Citation
35
98
4,091
* Rankings
Ranking Based On Selection: 5
Ehsan Kazemnezhad Leyli
categorical data analysis
regression modeling
Biostatitics
Metrics
H-Index
i10 Index
Citation
35
166
5,095
* Rankings
Ranking Based On Selection: 6
Mehdi Shirzad Siboni
Environmental Health Engineering
Chemistry
Metrics
H-Index
i10 Index
Citation
34
57
3,594
* Rankings
Ranking Based On Selection: 7
Amaneh Mohammadi Roushandeh
Regenerative medicine
Cell therapy
Cancer Biology
Mitochondrial transplantation/medicine
Metrics
H-Index
i10 Index
Citation
30
57
2,805
* Rankings
Ranking Based On Selection: 10
Enayatollah Homaie Rad
Health Economics
Economic Modelling
Health Econometrics
Equity
Trauma
Metrics
H-Index
i10 Index
Citation
28
54
34,134

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* Rankings
Ranking Based On Selection: 12
Parvin Babaei
Alzheimer's disease
Mechanisms of Learning & memory
Exercise & Cognition' metabolic syndrome
Metrics
H-Index
i10 Index
Citation
26
43
2,157
* Rankings
Ranking Based On Selection: 13
Mohtasham Amiri Z
Preventive and Community Medicine
Geriatrics
Trauma
Public Health
Metrics
H-Index
i10 Index
Citation
26
55
2,139
* Rankings
Ranking Based On Selection: 15
Zeinab Ghorbani
Nutrition and Cardiovascular Disorders
Nutrition and Neurological Disorders
Gut microbiota and Probiotics supplementation
Metrics
H-Index
i10 Index
Citation
25
44
2,413
* Rankings
Ranking Based On Selection: 16
Hadi Sedigh Ebrahim Saraie
Medical Microbiology
Antimicrobial Resistance
Nosocomial Infections
Metrics
H-Index
i10 Index
Citation
25
48
1,610
* Rankings
Ranking Based On Selection: 18
Seyed Davoud Ashrafi
Environmental Health Engineering
Metrics
H-Index
i10 Index
Citation
24
40
2,028
* Rankings
Ranking Based On Selection: 20
Keyhan Ashrafi
Medical Parasitology
Fascioliasis
Intestinal Parasites
Avian Trichobilharziasis
Metrics
H-Index
i10 Index
Citation
24
42
2,093
* Rankings
Ranking Based On Selection: 25
Meysam Sharifdini
Medical Parasitology
Strongyloidiasis
Trichostrongyliasis
Molecular parasitology
Metrics
H-Index
i10 Index
Citation
22
45
1,295
* Rankings
Ranking Based On Selection: 29
Shadman Nemati
Otolaryngology
Otology- Neurotology
Tinnitus
Endoscopic Sinus Surgery
Rhinoplasty
Metrics
H-Index
i10 Index
Citation
21
47
1,243
* Rankings
Ranking Based On Selection: 36
Iraj Nikokar
clinical microbiology
Immunology of infectious disease‏
Antimicrobial activity chemical components and Antibiotic resistana
Metrics
H-Index
i10 Index
Citation
19
33
1,186
* Rankings
Ranking Based On Selection: 37
Shahram Taeb|S Taeb
Molecular Imaging
Radiobiology
Radiation Therapy
Targeted Therapy
Metrics
H-Index
i10 Index
Citation
19
25
1,228
* Rankings
Ranking Based On Selection: 39
Rabiollah Farmanbar
health education and health promotion
life style(physical activity)
theory based intervention
Metrics
H-Index
i10 Index
Citation
19
37
1,188
* Rankings
Ranking Based On Selection: 42
Morteza Fallah Karkan
Uro-oncology
Infertility
Kidney transplantation
Andrology
Laser
Metrics
H-Index
i10 Index
Citation
18
36
1,097
* Rankings
Ranking Based On Selection: 64
Fahimeh Mohammadghasemi
Biology
Reproductive system
histology and embryology
toxicology
Metrics
H-Index
i10 Index
Citation
16
25
842
* Rankings
Ranking Based On Selection: 67
Kamran Taghavi
Water pollution-Water & WasteWater treatment-Solid Waste-Air Pollution
Metrics
H-Index
i10 Index
Citation
15
18
743
* Rankings
Ranking Based On Selection: 74
Pouya Safarzadeh Kozani|Pouya Safarzadeh
CAR-T cells
Cancer Immunotherapy
Monoclonal antibodies
Humanization
CRISPR/Cas9
Metrics
H-Index
i10 Index
Citation
14
18
816
* Rankings
Ranking Based On Selection: 76
Mohammad Esmaeilpour Bandboni
nursing ethics
violence
communication
qualitative research
nursing law
Metrics
H-Index
i10 Index
Citation
14
23
751
* Rankings
Ranking Based On Selection: 79
Saeed Ghasemi
Medicinal Chemistry
Organic Chemistry
Drug Design
Metrics
H-Index
i10 Index
Citation
14
18
519
* Rankings
Ranking Based On Selection: 80
Tolou Hasandokht
cardiovascular prevention
public health
family medicine
Metrics
H-Index
i10 Index
Citation
14
16
704
* Rankings
Ranking Based On Selection: 89
Mostafa Golshekan
Heterogenous Nano-Catalyst
Synthesis of nano-particles
organic reactions and analytical Methods
Metrics
H-Index
i10 Index
Citation
13
17
535
* Rankings
Ranking Based On Selection: 91
Mohammad Taghi Moghadamnia
Disaster
Climate Change
Cardiovascular Diseases
Emergency Medicine
Critical care
Metrics
H-Index
i10 Index
Citation
13
17
633
* Rankings
Ranking Based On Selection: 95
Ebrahim Nasiri
Fertility and Sterility
Anatomy
Embryology
Histology
Metrics
H-Index
i10 Index
Citation
13
15
494
* Rankings
Ranking Based On Selection: 97
Sobhan Faezi
Pseudomonas aeruginosa
Pneumonia model of infection
Flagellin-based vaccines
Recombinant protein purification
Metrics
H-Index
i10 Index
Citation
13
17
719
* Rankings
Ranking Based On Selection: 99
Mohammadreza Yeganeh
medical surgical nursing
nursing managament
managament
nursing education
LFC in ICN
Metrics
H-Index
i10 Index
Citation
13
16
387
* Rankings
Ranking Based On Selection: 100
Leila Khalaj
Neuroscience
Pharmacology
Cerebral Ischemia
Stem Cell
Integrative Medicine
Metrics
H-Index
i10 Index
Citation
13
15
1,105
Rankings
Ranking Based On Selection: 2
Jalil Jaafari
Metrics
H-Index
i10 Index
Citation Counts
52
83
26,368
Environmental engineering
Air pollution
wastewater treatment
waste managment
Rankings
Ranking Based On Selection: 4
Mehryar Habibi Roudkenar
Metrics
H-Index
i10 Index
Citation Counts
35
98
4,091
Cancer
stem cell
oxidative stress
Recombinant DNA technology
Mitochondria
Rankings
Ranking Based On Selection: 5
Ehsan Kazemnezhad Leyli
Metrics
H-Index
i10 Index
Citation Counts
35
166
5,095
categorical data analysis
regression modeling
Biostatitics
Rankings
Ranking Based On Selection: 6
Mehdi Shirzad Siboni
Metrics
H-Index
i10 Index
Citation Counts
34
57
3,594
Environmental Health Engineering
Chemistry
Rankings
Ranking Based On Selection: 7
Amaneh Mohammadi Roushandeh
Metrics
H-Index
i10 Index
Citation Counts
30
57
2,805
Regenerative medicine
Cell therapy
Cancer Biology
Mitochondrial transplantation/medicine
Rankings
Ranking Based On Selection: 8
Zahra Atrkar Roushan
Metrics
H-Index
i10 Index
Citation Counts
29
89
3,084
Rankings
Ranking Based On Selection: 9
Abtin Heidarzadeh
Metrics
H-Index
i10 Index
Citation Counts
29
75
3,352
Rankings
Ranking Based On Selection: 10
Enayatollah Homaie Rad
Metrics
H-Index
i10 Index
Citation Counts
28
54
34,134
Health Economics
Economic Modelling
Health Econometrics
Equity
Trauma

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
Atefeh Ghanbari
Metrics
H-Index
i10 Index
Citation Counts
28
72
2,856
Rankings
Ranking Based On Selection: 12
Parvin Babaei
Metrics
H-Index
i10 Index
Citation Counts
26
43
2,157
Alzheimer's disease
Mechanisms of Learning & memory
Exercise & Cognition' metabolic syndrome
Rankings
Ranking Based On Selection: 13
Mohtasham Amiri Z
Metrics
H-Index
i10 Index
Citation Counts
26
55
2,139
Preventive and Community Medicine
Geriatrics
Trauma
Public Health
Rankings
Ranking Based On Selection: 15
Zeinab Ghorbani
Metrics
H-Index
i10 Index
Citation Counts
25
44
2,413
Nutrition and Cardiovascular Disorders
Nutrition and Neurological Disorders
Gut microbiota and Probiotics supplementation
Rankings
Ranking Based On Selection: 16
Hadi Sedigh Ebrahim Saraie
Metrics
H-Index
i10 Index
Citation Counts
25
48
1,610
Medical Microbiology
Antimicrobial Resistance
Nosocomial Infections
Rankings
Ranking Based On Selection: 17
Rahim Nosrati
Metrics
H-Index
i10 Index
Citation Counts
24
32
1,998
Rankings
Ranking Based On Selection: 18
Seyed Davoud Ashrafi
Metrics
H-Index
i10 Index
Citation Counts
24
40
2,028
Environmental Health Engineering
Rankings
Ranking Based On Selection: 19
Alia Saberi
Metrics
H-Index
i10 Index
Citation Counts
24
55
1,929
Rankings
Ranking Based On Selection: 20
Keyhan Ashrafi
Metrics
H-Index
i10 Index
Citation Counts
24
42
2,093
Medical Parasitology
Fascioliasis
Intestinal Parasites
Avian Trichobilharziasis
Rankings
Ranking Based On Selection: 21
Mohsen Mardani Kivi
Metrics
H-Index
i10 Index
Citation Counts
24
48
1,489
Rankings
Ranking Based On Selection: 23
Bahram Naderinabi
Metrics
H-Index
i10 Index
Citation Counts
24
40
1,262
Rankings
Ranking Based On Selection: 24
Mohammad Highi
Metrics
H-Index
i10 Index
Citation Counts
23
38
1,211
Critical Care Medicine
Regional Anesthesia and Pain Control
Rankings
Ranking Based On Selection: 25
Meysam Sharifdini
Metrics
H-Index
i10 Index
Citation Counts
22
45
1,295
Medical Parasitology
Strongyloidiasis
Trichostrongyliasis
Molecular parasitology
Rankings
Ranking Based On Selection: 26
Mirsaeed Attarchi
Metrics
H-Index
i10 Index
Citation Counts
22
49
1,952
Rankings
Ranking Based On Selection: 27
Fardin Mehrabian
Metrics
H-Index
i10 Index
Citation Counts
22
40
1,473
Rankings
Ranking Based On Selection: 29
Shadman Nemati
Metrics
H-Index
i10 Index
Citation Counts
21
47
1,243
Otolaryngology
Otology- Neurotology
Tinnitus
Endoscopic Sinus Surgery
Rhinoplasty
Rankings
Ranking Based On Selection: 30
Daryoosh Naghipour
Metrics
H-Index
i10 Index
Citation Counts
20
25
1,319
Rankings
Ranking Based On Selection: 31
Nematollah Ahangar
Metrics
H-Index
i10 Index
Citation Counts
20
30
1,124
Rankings
Ranking Based On Selection: 32
Seyedeh Hajar Sharami
Metrics
H-Index
i10 Index
Citation Counts
20
37
1,184
Rankings
Ranking Based On Selection: 34
Ahmad Alizadeh
Metrics
H-Index
i10 Index
Citation Counts
20
26
997
Rankings
Ranking Based On Selection: 35
Mohammadreza Naghipour
Metrics
H-Index
i10 Index
Citation Counts
19
39
1,763
Rankings
Ranking Based On Selection: 36
Iraj Nikokar
Metrics
H-Index
i10 Index
Citation Counts
19
33
1,186
clinical microbiology
Immunology of infectious disease‏
Antimicrobial activity chemical components and Antibiotic resistana
Rankings
Ranking Based On Selection: 37
Shahram Taeb|S Taeb
Metrics
H-Index
i10 Index
Citation Counts
19
25
1,228
Molecular Imaging
Radiobiology
Radiation Therapy
Targeted Therapy
Rankings
Ranking Based On Selection: 38
Zahra Dalili Kajan
Metrics
H-Index
i10 Index
Citation Counts
19
33
1,245
Rankings
Ranking Based On Selection: 39
Rabiollah Farmanbar
Metrics
H-Index
i10 Index
Citation Counts
19
37
1,188
health education and health promotion
life style(physical activity)
theory based intervention
Rankings
Ranking Based On Selection: 40
Taher Cheraghi
Metrics
H-Index
i10 Index
Citation Counts
19
23
1,381
Rankings
Ranking Based On Selection: 41
Marjan Mahdavi Roshan
Metrics
H-Index
i10 Index
Citation Counts
18
34
1,157
Rankings
Ranking Based On Selection: 42
Morteza Fallah Karkan
Metrics
H-Index
i10 Index
Citation Counts
18
36
1,097
Uro-oncology
Infertility
Kidney transplantation
Andrology
Laser
Rankings
Ranking Based On Selection: 43
Mohamad Hadi Bahadori
Metrics
H-Index
i10 Index
Citation Counts
18
30
1,019
Rankings
Ranking Based On Selection: 44
Sedigheh Pakseresht
Metrics
H-Index
i10 Index
Citation Counts
18
24
851
breast cancer
women health
Rankings
Ranking Based On Selection: 46
Khashayar Saheb Ekhtiari
Metrics
H-Index
i10 Index
Citation Counts
18
20
760
Rankings
Ranking Based On Selection: 47
Ziba Zahiri
Metrics
H-Index
i10 Index
Citation Counts
18
23
841
Rankings
Ranking Based On Selection: 48
Mitra Akbari
Metrics
H-Index
i10 Index
Citation Counts
17
18
658
Rankings
Ranking Based On Selection: 49
Iraj Aghaei
Metrics
H-Index
i10 Index
Citation Counts
17
27
828
Rankings
Ranking Based On Selection: 51
Soudabeh Haddadi
Metrics
H-Index
i10 Index
Citation Counts
17
21
648
Rankings
Ranking Based On Selection: 53
Asieh Ashouri
Metrics
H-Index
i10 Index
Citation Counts
17
24
931
Rankings
Ranking Based On Selection: 54
Afshin Shafaghi
Metrics
H-Index
i10 Index
Citation Counts
17
24
983
Rankings
Ranking Based On Selection: 55
Nozhat Zebardast
Metrics
H-Index
i10 Index
Citation Counts
17
20
889
Rankings
Ranking Based On Selection: 56
Ali Monfared
Metrics
H-Index
i10 Index
Citation Counts
17
28
718
Rankings
Ranking Based On Selection: 59
Arash Zaminy
Metrics
H-Index
i10 Index
Citation Counts
16
20
940
Rankings
Ranking Based On Selection: 61
Ezzat Paryad
Metrics
H-Index
i10 Index
Citation Counts
16
24
781
Rankings
Ranking Based On Selection: 62
Ahmadreza Mirbolook
Metrics
H-Index
i10 Index
Citation Counts
16
22
711
Rankings
Ranking Based On Selection: 63
Morteza Rahbar Taramsari
Metrics
H-Index
i10 Index
Citation Counts
16
27
665
Rankings
Ranking Based On Selection: 64
Fahimeh Mohammadghasemi
Metrics
H-Index
i10 Index
Citation Counts
16
25
842
Biology
Reproductive system
histology and embryology
toxicology
Rankings
Ranking Based On Selection: 65
Afshin Safaei Asl
Metrics
H-Index
i10 Index
Citation Counts
16
19
765
Rankings
Ranking Based On Selection: 67
Kamran Taghavi
Metrics
H-Index
i10 Index
Citation Counts
15
18
743
Water pollution-Water & WasteWater treatment-Solid Waste-Air Pollution
Rankings
Ranking Based On Selection: 68
Rasoul Tabari
Metrics
H-Index
i10 Index
Citation Counts
15
22
1,119
Rankings
Ranking Based On Selection: 69
Siamak Rimaz
Metrics
H-Index
i10 Index
Citation Counts
15
16
697
Rankings
Ranking Based On Selection: 71
Hossein Hemmati
Metrics
H-Index
i10 Index
Citation Counts
15
18
1,116
Rankings
Ranking Based On Selection: 72
Roya Faraji
Metrics
H-Index
i10 Index
Citation Counts
15
24
1,423
Rankings
Ranking Based On Selection: 73
Reza Jafari Shakib
Metrics
H-Index
i10 Index
Citation Counts
15
20
626
Rankings
Ranking Based On Selection: 74
Pouya Safarzadeh Kozani|Pouya Safarzadeh
Metrics
H-Index
i10 Index
Citation Counts
14
18
816
CAR-T cells
Cancer Immunotherapy
Monoclonal antibodies
Humanization
CRISPR/Cas9
Rankings
Ranking Based On Selection: 75
Meysam Hasannejad-Bibalan
Metrics
H-Index
i10 Index
Citation Counts
14
17
546
Medical Microbiology
Probiotic
Cell culture
IBD
Microbiome
Rankings
Ranking Based On Selection: 76
Mohammad Esmaeilpour Bandboni
Metrics
H-Index
i10 Index
Citation Counts
14
23
751
nursing ethics
violence
communication
qualitative research
nursing law
Rankings
Ranking Based On Selection: 77
Ali Alavi Foumani
Metrics
H-Index
i10 Index
Citation Counts
14
21
552
Rankings
Ranking Based On Selection: 78
Soheil Soltanipour
Metrics
H-Index
i10 Index
Citation Counts
14
19
528
Rankings
Ranking Based On Selection: 79
Saeed Ghasemi
Metrics
H-Index
i10 Index
Citation Counts
14
18
519
Medicinal Chemistry
Organic Chemistry
Drug Design
Rankings
Ranking Based On Selection: 80
Tolou Hasandokht
Metrics
H-Index
i10 Index
Citation Counts
14
16
704
cardiovascular prevention
public health
family medicine
Rankings
Ranking Based On Selection: 81
Hamidreza Badeli
Metrics
H-Index
i10 Index
Citation Counts
14
17
439
Rankings
Ranking Based On Selection: 82
Payman Asadi
Metrics
H-Index
i10 Index
Citation Counts
14
20
551
Rankings
Ranking Based On Selection: 83
Gholamreza Mokhtari
Metrics
H-Index
i10 Index
Citation Counts
14
18
729
Rankings
Ranking Based On Selection: 84
Kamran Ezzati
Metrics
H-Index
i10 Index
Citation Counts
14
17
743
Rankings
Ranking Based On Selection: 86
Parvaneh Keshavarz
Metrics
H-Index
i10 Index
Citation Counts
14
15
624
Rankings
Ranking Based On Selection: 87
Fateme Jafaraghaee
Metrics
H-Index
i10 Index
Citation Counts
13
19
833
Rankings
Ranking Based On Selection: 88
Mojtaba Hedayati CH
Metrics
H-Index
i10 Index
Citation Counts
13
18
607
Microbiology-Microbial toxins
Rankings
Ranking Based On Selection: 89
Mostafa Golshekan
Metrics
H-Index
i10 Index
Citation Counts
13
17
535
Heterogenous Nano-Catalyst
Synthesis of nano-particles
organic reactions and analytical Methods
Rankings
Ranking Based On Selection: 90
Abdolhosein Emami Sigaroudi
Metrics
H-Index
i10 Index
Citation Counts
13
20
532
Rankings
Ranking Based On Selection: 91
Mohammad Taghi Moghadamnia
Metrics
H-Index
i10 Index
Citation Counts
13
17
633
Disaster
Climate Change
Cardiovascular Diseases
Emergency Medicine
Critical care
Rankings
Ranking Based On Selection: 92
Azar Darvishpour
Metrics
H-Index
i10 Index
Citation Counts
13
17
598
Rankings
Ranking Based On Selection: 94
Roya Mansour-Ghanaei
Metrics
H-Index
i10 Index
Citation Counts
13
15
514
Gastroenterology
Hepatology
Nursing
Education
Geriatric
Rankings
Ranking Based On Selection: 95
Ebrahim Nasiri
Metrics
H-Index
i10 Index
Citation Counts
13
15
494
Fertility and Sterility
Anatomy
Embryology
Histology
Rankings
Ranking Based On Selection: 96
Mandana Mansour-Ghanaei
Metrics
H-Index
i10 Index
Citation Counts
13
18
598
Rankings
Ranking Based On Selection: 97
Sobhan Faezi
Metrics
H-Index
i10 Index
Citation Counts
13
17
719
Pseudomonas aeruginosa
Pneumonia model of infection
Flagellin-based vaccines
Recombinant protein purification
Rankings
Ranking Based On Selection: 98
Sara Ramezani
Metrics
H-Index
i10 Index
Citation Counts
13
16
453
Rankings
Ranking Based On Selection: 99
Mohammadreza Yeganeh
Metrics
H-Index
i10 Index
Citation Counts
13
16
387
medical surgical nursing
nursing managament
managament
nursing education
LFC in ICN
Rankings
Ranking Based On Selection: 100
Leila Khalaj
Metrics
H-Index
i10 Index
Citation Counts
13
15
1,105
Neuroscience
Pharmacology
Cerebral Ischemia
Stem Cell
Integrative Medicine