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 rankings in world, region, country, and university are in Beta version and are subject to real-time updates, since the subject field “Others” (1,121,279 scientists profile whose branch cannot be determined, not yet edited or determined) is excluded. These rankings will dynamically evolve in real time as the “Others” profiles are revised and classified. Please note that. Subjects indicated as “ * others ” will not be included in the ranking by regions and subjects.

* Rankings
Ranking Based On Selection: 1
Kourosh Sayehmiri
Meta-analysis
survival analysis
medical statistic
Metrics
 
H-Index
i10 Index
Citation
55
225
11,853
* Rankings
Ranking Based On Selection: 2
Mahmoud Roushani|Mahmoud Roshani,
Analytical Chemistry
Electrochemistry
Nanobiosensors
Nanomaterial
Metrics
 
H-Index
i10 Index
Citation
46
175
7,468
* Rankings
Ranking Based On Selection: 3
Reza Sahraei
Spectroscopy
Nanotechnology
Solid State Chemistry
Semiconductor Quantum Dot
Metrics
 
H-Index
i10 Index
Citation
44
89
6,528
* Rankings
Ranking Based On Selection: 4
Seyyed Hossein Hosseini
Multiphase flow
computational fluid dynamics
fluidizatio
Metrics
 
H-Index
i10 Index
Citation
40
117
4,649
* Rankings
Ranking Based On Selection: 5
Yousef Veisani
Social Epidemiology
Cancer
Health Inequality
Systematic revie
Metrics
 
H-Index
i10 Index
Citation
38
85
32,871
* Rankings
Ranking Based On Selection: 7
H Nourmoradi
Environmental Health Engineering
Water and WastewaterTreatment
Metrics
 
H-Index
i10 Index
Citation
36
72
4,123
* Rankings
Ranking Based On Selection: 8
Milad Azami
Paediatrics
Gynaecology
Internal Medicine
Epidemiology
Meta-analysi
Metrics
 
H-Index
i10 Index
Citation
33
88
4,058
* Rankings
Ranking Based On Selection: 11
Milad Borji
Qualitative studies & Meta-analysis & Randomized clinical trial in Health
Gerontology
Ethic
Metrics
 
H-Index
i10 Index
Citation
32
75
2,440
* Rankings
Ranking Based On Selection: 13
Salar Bakhtiyari
Clinical Biochemistry
Molecular Biology
Molecular Signaling
Molecular Diabetolog
Metrics
 
H-Index
i10 Index
Citation
29
50
2,140
* Rankings
Ranking Based On Selection: 14
Jamil Sadeghifar
Strategic Planing
Balanced Scorecard
Health Services Management
Medical Educatio
Metrics
 
H-Index
i10 Index
Citation
28
52
2,157
* Rankings
Ranking Based On Selection: 15
Lotfi Shiri
Organic Chemistry
Heterocyclic Compound
Metrics
 
H-Index
i10 Index
Citation
26
47
1,757
* Rankings
Ranking Based On Selection: 17
Shahryar Abbasi
Electroanalytical chemistry
spectroscopy
separation science
Metrics
 
H-Index
i10 Index
Citation
25
61
1,997
* Rankings
Ranking Based On Selection: 18
Akbar Azizifar
English Language Teaching
testing
applied Linguistic
Metrics
 
H-Index
i10 Index
Citation
24
39
1,865
* Rankings
Ranking Based On Selection: 19
Arman Azadi
nursing research
older adult health
men in nursin
Metrics
 
H-Index
i10 Index
Citation
24
42
1,765
* Rankings
Ranking Based On Selection: 21
Noorimotlagh Zahra
Environmental health engineerin
Metrics
 
H-Index
i10 Index
Citation
23
32
1,973
* Rankings
Ranking Based On Selection: 22
Mehdi Heydari|Mehdi Heydari
Plant-Environment Interactions and Managemen
Metrics
 
H-Index
i10 Index
Citation
23
53
1,691
* Rankings
Ranking Based On Selection: 24
Ashraf Direkvand Moghadam
MSc
Mphil
PhD in Reproductive Healt
Metrics
 
H-Index
i10 Index
Citation
23
41
2,340
Rankings
Ranking Based On Selection: 1
Kourosh Sayehmiri
Metrics
 
H-Index
i10 Index
Citation Counts
55
225
11,853
Meta-analysis
survival analysis
medical statistic
Rankings
Ranking Based On Selection: 2
Mahmoud Roushani|Mahmoud Roshani,
Metrics
 
H-Index
i10 Index
Citation Counts
46
175
7,468
Analytical Chemistry
Electrochemistry
Nanobiosensors
Nanomaterial
Rankings
Ranking Based On Selection: 3
Reza Sahraei
Metrics
 
H-Index
i10 Index
Citation Counts
44
89
6,528
Spectroscopy
Nanotechnology
Solid State Chemistry
Semiconductor Quantum Dot
Rankings
Ranking Based On Selection: 4
Seyyed Hossein Hosseini
Metrics
 
H-Index
i10 Index
Citation Counts
40
117
4,649
Multiphase flow
computational fluid dynamics
fluidizatio
Rankings
Ranking Based On Selection: 5
Yousef Veisani
Metrics
 
H-Index
i10 Index
Citation Counts
38
85
32,871
Social Epidemiology
Cancer
Health Inequality
Systematic revie
Rankings
Ranking Based On Selection: 6
Nourkhoda Sadeghifard
Metrics
 
H-Index
i10 Index
Citation Counts
37
103
4,879
Rankings
Ranking Based On Selection: 7
H Nourmoradi
Metrics
 
H-Index
i10 Index
Citation Counts
36
72
4,123
Rankings
Ranking Based On Selection: 8
Milad Azami
Metrics
 
H-Index
i10 Index
Citation Counts
33
88
4,058
Paediatrics
Gynaecology
Internal Medicine
Epidemiology
Meta-analysi
Rankings
Ranking Based On Selection: 9
Khairollah Asadollahi
Metrics
 
H-Index
i10 Index
Citation Counts
33
64
3,195
Rankings
Ranking Based On Selection: 10
Mohammad Ali Akbari
Metrics
 
H-Index
i10 Index
Citation Counts
32
66
3,682
Rankings
Ranking Based On Selection: 11
Milad Borji
Metrics
 
H-Index
i10 Index
Citation Counts
32
75
2,440
Qualitative studies & Meta-analysis & Randomized clinical trial in Health
Gerontology
Ethic
Rankings
Ranking Based On Selection: 12
Kamran Kheiralipour
Metrics
 
H-Index
i10 Index
Citation Counts
29
66
2,943
Rankings
Ranking Based On Selection: 13
Salar Bakhtiyari
Metrics
 
H-Index
i10 Index
Citation Counts
29
50
2,140
Clinical Biochemistry
Molecular Biology
Molecular Signaling
Molecular Diabetolog
Rankings
Ranking Based On Selection: 14
Jamil Sadeghifar
Metrics
 
H-Index
i10 Index
Citation Counts
28
52
2,157
Strategic Planing
Balanced Scorecard
Health Services Management
Medical Educatio
Rankings
Ranking Based On Selection: 15
Lotfi Shiri
Metrics
 
H-Index
i10 Index
Citation Counts
26
47
1,757
Rankings
Ranking Based On Selection: 16
Hamzeh Salehipour
Metrics
 
H-Index
i10 Index
Citation Counts
25
41
1,823
Rankings
Ranking Based On Selection: 17
Shahryar Abbasi
Metrics
 
H-Index
i10 Index
Citation Counts
25
61
1,997
Electroanalytical chemistry
spectroscopy
separation science
Rankings
Ranking Based On Selection: 18
Akbar Azizifar
Metrics
 
H-Index
i10 Index
Citation Counts
24
39
1,865
English Language Teaching
testing
applied Linguistic
Rankings
Ranking Based On Selection: 19
Arman Azadi
Metrics
 
H-Index
i10 Index
Citation Counts
24
42
1,765
Rankings
Ranking Based On Selection: 20
Afra Khosravi
Metrics
 
H-Index
i10 Index
Citation Counts
24
52
1,764
Rankings
Ranking Based On Selection: 21
Noorimotlagh Zahra
Metrics
 
H-Index
i10 Index
Citation Counts
23
32
1,973
Environmental health engineerin
Rankings
Ranking Based On Selection: 22
Mehdi Heydari|Mehdi Heydari
Metrics
 
H-Index
i10 Index
Citation Counts
23
53
1,691
Plant-Environment Interactions and Managemen
Rankings
Ranking Based On Selection: 23
Masoumeh Shohani
Metrics
 
H-Index
i10 Index
Citation Counts
24
38
1,982
Rankings
Ranking Based On Selection: 24
Ashraf Direkvand Moghadam
Metrics
 
H-Index
i10 Index
Citation Counts
23
41
2,340
MSc
Mphil
PhD in Reproductive Healt