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
Reza Tabrizi
Meta Analysis
Epidemiology
Neuroepidemiology
Health Polic
Metrics
 
H-Index
i10 Index
Citation
42
103
5,656
* Rankings
Ranking Based On Selection: 4
Mohammad Hashem Hashempur
Traditional Persian Medicine
Complementary and Alternative Medicin
Metrics
 
H-Index
i10 Index
Citation
34
59
3,323
* Rankings
Ranking Based On Selection: 6
Mojtaba Farjam
pharmacology
cohort studies
population pharmacology
pharmacoepidemiolog
Metrics
 
H-Index
i10 Index
Citation
30
70
7,284
* Rankings
Ranking Based On Selection: 7
Reza Homayounfar
Nutrition
Cellular and molecular nutrition
Obesity
Insuli
Metrics
 
H-Index
i10 Index
Citation
30
59
7,446
* Rankings
Ranking Based On Selection: 8
Mohammad Javad Amiri
Wastewater treatment
adsorption
Environmental nanotechnology
Conversion of waste to valu
Metrics
 
H-Index
i10 Index
Citation
30
56
2,680
* Rankings
Ranking Based On Selection: 9
Mahmoud Osanloo
Medical nanotechnology
Nanomedicine
Essential oil
Vector Contro
Metrics
 
H-Index
i10 Index
Citation
27
57
1,916
* Rankings
Ranking Based On Selection: 10
Abdol Rassoul Zarei
Climat Changes
Drought
Prediction Models
Time Serie
Metrics
 
H-Index
i10 Index
Citation
26
45
1,731
* Rankings
Ranking Based On Selection: 12
Azizallah Dehghan
Publich Health
Epidemiology
Cohort Study
Clinical Trial
Cardiovascular Disease
Metrics
 
H-Index
i10 Index
Citation
26
65
5,588
* Rankings
Ranking Based On Selection: 15
Mehdi Bahrami
Water Quality Monitoring
Water and Wastewater Treatment
Nanotechnology
Drought Assessmen
Metrics
 
H-Index
i10 Index
Citation
21
38
1,212
* Rankings
Ranking Based On Selection: 16
Mehran Sayadi
Food toxicology Food Technology Dairy products Prebiotics and Synbiotics functional food Food safety Molecular Food Microbiolog
Metrics
 
H-Index
i10 Index
Citation
19
29
970
* Rankings
Ranking Based On Selection: 17
Ehsan Bahramali
Genetics of Cardiovascular Diseases
Preventive Cardiolog
Metrics
 
H-Index
i10 Index
Citation
19
30
1,561
* Rankings
Ranking Based On Selection: 18
Amin Karimnia
Translation Studies
Discourse Studies
Sociolinguistics and Teacher Educatio
Metrics
 
H-Index
i10 Index
Citation
19
30
985
* Rankings
Ranking Based On Selection: 19
Najafipour Sohrab
Virology
Drug Discovery
phage therapy
inflammatio
Metrics
 
H-Index
i10 Index
Citation
19
29
1,214
* Rankings
Ranking Based On Selection: 21
Reza Roohi
CFD modeling
fractional calculus
Bio-mechanic
Metrics
 
H-Index
i10 Index
Citation
18
29
930
Rankings
Ranking Based On Selection: 1
Reza Tabrizi
Metrics
 
H-Index
i10 Index
Citation Counts
42
103
5,656
Rankings
Ranking Based On Selection: 2
Seyed Mohammad Bagher Hashemi
Metrics
 
H-Index
i10 Index
Citation Counts
38
106
5,260
Rankings
Ranking Based On Selection: 3
Mohammad Mehdi Naghizadeh
Metrics
 
H-Index
i10 Index
Citation Counts
37
109
4,862
Rankings
Ranking Based On Selection: 4
Mohammad Hashem Hashempur
Metrics
 
H-Index
i10 Index
Citation Counts
34
59
3,323
Traditional Persian Medicine
Complementary and Alternative Medicin
Rankings
Ranking Based On Selection: 5
Ali Khani Jeihooni
Metrics
 
H-Index
i10 Index
Citation Counts
33
95
3,311
Rankings
Ranking Based On Selection: 6
Mojtaba Farjam
Metrics
 
H-Index
i10 Index
Citation Counts
30
70
7,284
pharmacology
cohort studies
population pharmacology
pharmacoepidemiolog
Rankings
Ranking Based On Selection: 7
Reza Homayounfar
Metrics
 
H-Index
i10 Index
Citation Counts
30
59
7,446
Rankings
Ranking Based On Selection: 8
Mohammad Javad Amiri
Metrics
 
H-Index
i10 Index
Citation Counts
30
56
2,680
Wastewater treatment
adsorption
Environmental nanotechnology
Conversion of waste to valu
Rankings
Ranking Based On Selection: 9
Mahmoud Osanloo
Metrics
 
H-Index
i10 Index
Citation Counts
27
57
1,916
Medical nanotechnology
Nanomedicine
Essential oil
Vector Contro
Rankings
Ranking Based On Selection: 10
Abdol Rassoul Zarei
Metrics
 
H-Index
i10 Index
Citation Counts
26
45
1,731
Climat Changes
Drought
Prediction Models
Time Serie
Rankings
Ranking Based On Selection: 11
Elahe Abedi
Metrics
 
H-Index
i10 Index
Citation Counts
26
56
3,049
Rankings
Ranking Based On Selection: 12
Azizallah Dehghan
Metrics
 
H-Index
i10 Index
Citation Counts
26
65
5,588
Publich Health
Epidemiology
Cohort Study
Clinical Trial
Cardiovascular Disease
Rankings
Ranking Based On Selection: 13
Amin Kouhpayeh
Metrics
 
H-Index
i10 Index
Citation Counts
24
34
1,482
Rankings
Ranking Based On Selection: 14
Mostafa Bijani
Metrics
 
H-Index
i10 Index
Citation Counts
23
49
1,884
Rankings
Ranking Based On Selection: 15
Mehdi Bahrami
Metrics
 
H-Index
i10 Index
Citation Counts
21
38
1,212
Water Quality Monitoring
Water and Wastewater Treatment
Nanotechnology
Drought Assessmen
Rankings
Ranking Based On Selection: 16
Mehran Sayadi
Metrics
 
H-Index
i10 Index
Citation Counts
19
29
970
Food toxicology Food Technology Dairy products Prebiotics and Synbiotics functional food Food safety Molecular Food Microbiolog
Rankings
Ranking Based On Selection: 17
Ehsan Bahramali
Metrics
 
H-Index
i10 Index
Citation Counts
19
30
1,561
Genetics of Cardiovascular Diseases
Preventive Cardiolog
Rankings
Ranking Based On Selection: 18
Amin Karimnia
Metrics
 
H-Index
i10 Index
Citation Counts
19
30
985
Translation Studies
Discourse Studies
Sociolinguistics and Teacher Educatio
Rankings
Ranking Based On Selection: 19
Najafipour Sohrab
Metrics
 
H-Index
i10 Index
Citation Counts
19
29
1,214
Virology
Drug Discovery
phage therapy
inflammatio
Rankings
Ranking Based On Selection: 20
Ali Moravej
Metrics
 
H-Index
i10 Index
Citation Counts
19
27
857
Rankings
Ranking Based On Selection: 21
Reza Roohi
Metrics
 
H-Index
i10 Index
Citation Counts
18
29
930
Rankings
Ranking Based On Selection: 23
Kiana Pourmohammadi
Metrics
 
H-Index
i10 Index
Citation Counts
18
24
887
Rankings
Ranking Based On Selection: 24
Abbas Abdollahi
Metrics
 
H-Index
i10 Index
Citation Counts
18
27
765
Rankings
Ranking Based On Selection: 25
Manzarbanoo Shojaeifard
Metrics
 
H-Index
i10 Index
Citation Counts
18
23
1,414