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" (873,690 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
Mohammad Hadi Dehghani
Environmental Health
Adsorption
Environmental Pollution
Emerging Pollutants
Solid Waste Management
Metrics
H-Index
i10 Index
Citation
59
200
11,752
* Rankings
Ranking Based On Selection: 3
Kazem Naddafi
Water and wastewater treatment plant design
Environmental pollution control
Environmental health engineering
Metrics
H-Index
i10 Index
Citation
50
199
9,599
* Rankings
Ranking Based On Selection: 6
M Sadegh Hassanvand
Air Pollution
Exposure
Environmental Health
Indoor Air Quality
Health Impact Assessment
Metrics
H-Index
i10 Index
Citation
44
102
38,063
* Rankings
Ranking Based On Selection: 8
Mansour Shamsipour
Environmental Epidemiology
Air pollution
Health impact assessment
Burden of Disease
Noise
Metrics
H-Index
i10 Index
Citation
27
55
11,320
* Rankings
Ranking Based On Selection: 10
Hamed Soleimani
Environmental Sciences
Water
Environmental epidemiology
waste management
Health risk assessment
Metrics
H-Index
i10 Index
Citation
26
37
1,830

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
Mahdi Hadi
WASH
QMRA
Environmental Data Science
Environmental Epidemiology
app development
Metrics
H-Index
i10 Index
Citation
26
43
2,700
* Rankings
Ranking Based On Selection: 12
Sasan Faridi
Indoor and outdoor air quality
Health effects
Aerosol science
Environmental epidemiology
Environmental health
Metrics
H-Index
i10 Index
Citation
25
35
3,133
* Rankings
Ranking Based On Selection: 14
Ehsan Ahmadi
Environmental Sciences
Bio-remediation
Water and Wastewater treatment
Biofilm.
Metrics
H-Index
i10 Index
Citation
24
29
2,177
* Rankings
Ranking Based On Selection: 15
Reza Fouladi Fard
Air pollution and health modeling
Water and wastewater treatment
Solid waste managment
Metrics
H-Index
i10 Index
Citation
22
36
2,311
* Rankings
Ranking Based On Selection: 19
Saba Kalantary
Occupational Health
Electrospinning
Nanofibers
Filtration
Air pollution
Metrics
H-Index
i10 Index
Citation
18
25
1,186
* Rankings
Ranking Based On Selection: 21
Fatemeh Yousefian
Environmental Epidemiology
Indoor and outdoor air quality
Environmental Health
Autism
Metrics
H-Index
i10 Index
Citation
17
19
875
* Rankings
Ranking Based On Selection: 22
Zahra Atafar
Environmental models
Air pollution
water & wastewater
sustainable development
Metrics
H-Index
i10 Index
Citation
17
25
9,160
Saeedeh Lotfi
Air Pollution
Source Apportionment
Receptor Modeling
Systematic Review
Metrics
H-Index
i10 Index
Citation
5
5
333
Rankings
Ranking Based On Selection: 1
Mohammad Hadi Dehghani
Metrics
H-Index
i10 Index
Citation Counts
59
200
11,752
Environmental Health
Adsorption
Environmental Pollution
Emerging Pollutants
Solid Waste Management
Rankings
Ranking Based On Selection: 2
Shahrokh Nazmara
Metrics
H-Index
i10 Index
Citation Counts
52
129
8,278
Rankings
Ranking Based On Selection: 3
Kazem Naddafi
Metrics
H-Index
i10 Index
Citation Counts
50
199
9,599
Water and wastewater treatment plant design
Environmental pollution control
Environmental health engineering
Rankings
Ranking Based On Selection: 4
Alireza Mesdaghinia
Metrics
H-Index
i10 Index
Citation Counts
50
191
9,890
Rankings
Ranking Based On Selection: 5
Kamyar Yaghmaeian
Metrics
H-Index
i10 Index
Citation Counts
45
125
6,317
Rankings
Ranking Based On Selection: 6
M Sadegh Hassanvand
Metrics
H-Index
i10 Index
Citation Counts
44
102
38,063
Air Pollution
Exposure
Environmental Health
Indoor Air Quality
Health Impact Assessment
Rankings
Ranking Based On Selection: 8
Mansour Shamsipour
Metrics
H-Index
i10 Index
Citation Counts
27
55
11,320
Environmental Epidemiology
Air pollution
Health impact assessment
Burden of Disease
Noise
Rankings
Ranking Based On Selection: 9
Abbas Norouzian Baghani
Metrics
H-Index
i10 Index
Citation Counts
26
41
2,078
Rankings
Ranking Based On Selection: 10
Hamed Soleimani
Metrics
H-Index
i10 Index
Citation Counts
26
37
1,830
Environmental Sciences
Water
Environmental epidemiology
waste management
Health risk assessment

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
Mahdi Hadi
Metrics
H-Index
i10 Index
Citation Counts
26
43
2,700
WASH
QMRA
Environmental Data Science
Environmental Epidemiology
app development
Rankings
Ranking Based On Selection: 12
Sasan Faridi
Metrics
H-Index
i10 Index
Citation Counts
25
35
3,133
Indoor and outdoor air quality
Health effects
Aerosol science
Environmental epidemiology
Environmental health
Rankings
Ranking Based On Selection: 13
Kazem Godini
Metrics
H-Index
i10 Index
Citation Counts
25
44
1,582
Rankings
Ranking Based On Selection: 14
Ehsan Ahmadi
Metrics
H-Index
i10 Index
Citation Counts
24
29
2,177
Environmental Sciences
Bio-remediation
Water and Wastewater treatment
Biofilm.
Rankings
Ranking Based On Selection: 15
Reza Fouladi Fard
Metrics
H-Index
i10 Index
Citation Counts
22
36
2,311
Air pollution and health modeling
Water and wastewater treatment
Solid waste managment
Rankings
Ranking Based On Selection: 16
Fazlollah Changani
Metrics
H-Index
i10 Index
Citation Counts
21
24
2,350
Rankings
Ranking Based On Selection: 17
Shahin Soltani
Metrics
H-Index
i10 Index
Citation Counts
21
28
2,323
Rankings
Ranking Based On Selection: 19
Saba Kalantary
Metrics
H-Index
i10 Index
Citation Counts
18
25
1,186
Occupational Health
Electrospinning
Nanofibers
Filtration
Air pollution
Rankings
Ranking Based On Selection: 21
Fatemeh Yousefian
Metrics
H-Index
i10 Index
Citation Counts
17
19
875
Environmental Epidemiology
Indoor and outdoor air quality
Environmental Health
Autism
Rankings
Ranking Based On Selection: 22
Zahra Atafar
Metrics
H-Index
i10 Index
Citation Counts
17
25
9,160
Environmental models
Air pollution
water & wastewater
sustainable development
Rankings
Ranking Based On Selection: 23
Sara Hosseini
Metrics
H-Index
i10 Index
Citation Counts
16
22
1,134
Rankings
Ranking Based On Selection: 24
Farshad Hamidi
Metrics
H-Index
i10 Index
Citation Counts
8
7
169
Rankings
Ranking Based On Selection: 25
Arefeh Mousavi
Metrics
H-Index
i10 Index
Citation Counts
8
8
226
Rankings
Ranking Based On Selection: 26
Mehri Solaimany Aminabad
Metrics
H-Index
i10 Index
Citation Counts
7
7
498
Rankings
Ranking Based On Selection: 27
Saeedeh Lotfi
Metrics
H-Index
i10 Index
Citation Counts
5
5
333
Air Pollution
Source Apportionment
Receptor Modeling
Systematic Review
Rankings
Ranking Based On Selection: 28
Mohammad Raeesi Sh|Mohammad Raeesi
Metrics
H-Index
i10 Index
Citation Counts
2
2
106
Environmental Health
Air pollution modeling
data scientist
Matching learning