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" (873,864 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
Pedro Jj Alvarez
environmental engineering
environmental nanotechnology
water treatment
biodegradation
Metrics
H-Index
i10 Index
Citation
117
387
61,475
Zhang Zhang
Oil and gas
oilfield water chemistry
environmental engineering
Metrics
H-Index
i10 Index
Citation
25
41
2,202
Loren Raun
Environmental statistics
human health risk assessment
association between human health and air pollution exposure and translat
Metrics
H-Index
i10 Index
Citation
20
29
1,317
Chong Dai
Environmental Engineering
Nanoparticles
Scale Formation and Control
Metrics
H-Index
i10 Index
Citation
19
25
1,242
Youngkun Chung
Environmental Engineering
Water treatment
Ceramic membrane
Advanced oxidation process
Catalysts
Metrics
H-Index
i10 Index
Citation
6
5
105
Priyanka Ali
Environmental Engineering
Wastewater treatment
Wastewater resiliency
Nutrient removal
Metrics
H-Index
i10 Index
Citation
6
3
279
Kiara Reyes Gamas
synthetic biology
environmental engineering
environmental synthetic biology
computational synthetic biology
horizontal gene
Metrics
H-Index
i10 Index
Citation
4
3
243
Mh Jayan S Karunarathna
Stimuli Responsive Materials
Polymers
Environmental Engineering
Photochemistry
Metrics
H-Index
i10 Index
Citation
3
2
55
Rankings
Ranking Based On Selection: 1
Pedro Jj Alvarez
Metrics
H-Index
i10 Index
Citation Counts
117
387
61,475
environmental engineering
environmental nanotechnology
water treatment
biodegradation
Rankings
Ranking Based On Selection: 2
Qilin Li
Metrics
H-Index
i10 Index
Citation Counts
67
133
22,124
Rankings
Ranking Based On Selection: 3
Lauren B Stadler
Metrics
H-Index
i10 Index
Citation Counts
30
40
3,632
Rankings
Ranking Based On Selection: 4
Zhang Zhang
Metrics
H-Index
i10 Index
Citation Counts
25
41
2,202
Oil and gas
oilfield water chemistry
environmental engineering
Rankings
Ranking Based On Selection: 5
Loren Raun
Metrics
H-Index
i10 Index
Citation Counts
20
29
1,317
Environmental statistics
human health risk assessment
association between human health and air pollution exposure and translat
Rankings
Ranking Based On Selection: 6
Chong Dai
Metrics
H-Index
i10 Index
Citation Counts
19
25
1,242
Environmental Engineering
Nanoparticles
Scale Formation and Control
Rankings
Ranking Based On Selection: 7
Saebom Ko
Metrics
H-Index
i10 Index
Citation Counts
19
33
1,263
Rankings
Ranking Based On Selection: 8
Youngkun Chung
Metrics
H-Index
i10 Index
Citation Counts
6
5
105
Environmental Engineering
Water treatment
Ceramic membrane
Advanced oxidation process
Catalysts
Rankings
Ranking Based On Selection: 9
Priyanka Ali
Metrics
H-Index
i10 Index
Citation Counts
6
3
279
Environmental Engineering
Wastewater treatment
Wastewater resiliency
Nutrient removal
Rankings
Ranking Based On Selection: 10
Kiara Reyes Gamas
Metrics
H-Index
i10 Index
Citation Counts
4
3
243
synthetic biology
environmental engineering
environmental synthetic biology
computational synthetic biology
horizontal gene
Rankings
Ranking Based On Selection: 11
Marielle Hollstein
Metrics
H-Index
i10 Index
Citation Counts
3
2
56
Rankings
Ranking Based On Selection: 12
Mh Jayan S Karunarathna
Metrics
H-Index
i10 Index
Citation Counts
3
2
55
Stimuli Responsive Materials
Polymers
Environmental Engineering
Photochemistry
Rankings
Ranking Based On Selection: 13
Sara B Denison
Metrics
H-Index
i10 Index
Citation Counts
2
1
24