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" (910,673 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
Hadi Memarian
Land Resource Management
Soil Conservation Planning
Landuse Change Modeling
Hydrological Modeling
Metrics
H-Index
i10 Index
Citation
19
27
1,354
* Rankings
Ranking Based On Selection: 4
Mohammadreza Rezaei
Environmental Engineering
Environmental Pollution
Biotechnology
Microbiology
Metrics
H-Index
i10 Index
Citation
15
17
848
Amir Zeidi
Ecotoxicology
Aquatic Toxicology
Microplastic
Photocatalyst
Biomarker
Metrics
H-Index
i10 Index
Citation
8
8
242

Maximize your institution's potential with our 360° Institutional Analysis Subscription and Institutional Exclusive Package, offering comprehensive insights and strategic advantages.

Neda Ravankhah
Environmental pollution
Environmental science
Environmental chemistry
Metrics
H-Index
i10 Index
Citation
5
4
159
Amir Ebrahimi
Environmental Sciences
Sand and Dust storms
Climatology
Habitat Modeling
Remote Sensing
Metrics
H-Index
i10 Index
Citation
3
1
85
Mahdi Badri
Aquatic ecology
Human pressure
Bio monitoring
River Restoration
River Management
Metrics
H-Index
i10 Index
Citation
1
0
3
Rankings
Ranking Based On Selection: 1
Mohammad Hossein Sayadi
Metrics
H-Index
i10 Index
Citation Counts
39
89
4,274
Rankings
Ranking Based On Selection: 2
Hadi Memarian
Metrics
H-Index
i10 Index
Citation Counts
19
27
1,354
Land Resource Management
Soil Conservation Planning
Landuse Change Modeling
Hydrological Modeling
Rankings
Ranking Based On Selection: 3
Abbas Khashei Siuki
Metrics
H-Index
i10 Index
Citation Counts
15
29
1,113
Rankings
Ranking Based On Selection: 4
Mohammadreza Rezaei
Metrics
H-Index
i10 Index
Citation Counts
15
17
848
Environmental Engineering
Environmental Pollution
Biotechnology
Microbiology
Rankings
Ranking Based On Selection: 5
Najmeh Ahmadpour
Metrics
H-Index
i10 Index
Citation Counts
10
10
694
Rankings
Ranking Based On Selection: 6
Taher Shahryari
Metrics
H-Index
i10 Index
Citation Counts
10
11
372
Rankings
Ranking Based On Selection: 7
Zohre Sadat Pourtaghi
Metrics
H-Index
i10 Index
Citation Counts
8
8
2,886
Rankings
Ranking Based On Selection: 8
Amir Zeidi
Metrics
H-Index
i10 Index
Citation Counts
8
8
242
Ecotoxicology
Aquatic Toxicology
Microplastic
Photocatalyst
Biomarker
Rankings
Ranking Based On Selection: 9
Ayoob Rezaei
Metrics
H-Index
i10 Index
Citation Counts
8
8
326
Rankings
Ranking Based On Selection: 10
Soheil Parsa
Metrics
H-Index
i10 Index
Citation Counts
8
6
286

Maximize your institution's potential with our 360° Institutional Analysis Subscription and Institutional Exclusive Package, offering comprehensive insights and strategic advantages.

Rankings
Ranking Based On Selection: 11
Hamid Reza Zakeri
Metrics
H-Index
i10 Index
Citation Counts
7
7
266
Rankings
Ranking Based On Selection: 12
Fatemeh Jahanishakib
Metrics
H-Index
i10 Index
Citation Counts
6
3
386
Rankings
Ranking Based On Selection: 13
Neda Ravankhah
Metrics
H-Index
i10 Index
Citation Counts
5
4
159
Environmental pollution
Environmental science
Environmental chemistry
Rankings
Ranking Based On Selection: 15
Amir Ebrahimi
Metrics
H-Index
i10 Index
Citation Counts
3
1
85
Environmental Sciences
Sand and Dust storms
Climatology
Habitat Modeling
Remote Sensing
Rankings
Ranking Based On Selection: 17
Mohammad Hadi Salehzadeh
Metrics
H-Index
i10 Index
Citation Counts
1
0
3
Rankings
Ranking Based On Selection: 18
Mahdi Badri
Metrics
H-Index
i10 Index
Citation Counts
1
0
3
Aquatic ecology
Human pressure
Bio monitoring
River Restoration
River Management