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
Roeland Samson
Air pollution biomonitoring
urban green infrastructure
ecosystem services of urban green
urban ecology
Metrics
H-Index
i10 Index
Citation
55
143
10,247
Malarvannan Govindan
Environmental Chemistry
Human biomonitoring
Environmental analysis
Wildlife exposure
Metrics
H-Index
i10 Index
Citation
38
82
4,512
Raewyn M Town
environmental physical chemistry
electrochemistry
dynamic chemical speciation
nanoparticles
bioavailability
Metrics
H-Index
i10 Index
Citation
37
109
5,058
Karen Wuyts
urban ecology
biogeochemistry
air pollution
environmental monitoring
phyllosphere bacteria
Metrics
H-Index
i10 Index
Citation
34
53
3,518
Pieter Billen
Environmental Engineering
Chemical Engineering
Materials Science
Metrics
H-Index
i10 Index
Citation
26
39
2,704
Gert Van Hecken
environmental justice
political ecology
payments for ecosystem services
politics of knowledge
degrowth
Metrics
H-Index
i10 Index
Citation
20
28
2,957
Tim Soens
environmental history
coastal wetlands
rural history
urban nature
Metrics
H-Index
i10 Index
Citation
19
33
1,289
* Rankings
Ranking Based On Selection :11
Manrico Sebastiano
conservation physiology
ecotoxicology
seabirds
environmental stress
Metrics
H-Index
i10 Index
Citation
13
15
467
* Rankings
Ranking Based On Selection :12
Alin C Ionas
Environmental science
analytical chemistry
chromatography
mass spectrometry
Metrics
H-Index
i10 Index
Citation
11
13
1,523
Giovanni Litti
Sustainability
Built Heritage
Energy Simulation
Indoor Air Quality
Thermal Comfort
Metrics
H-Index
i10 Index
Citation
8
8
316
Allan Augusto Alvarado-Alvarado
Environmental engineering
bioremediation
indoor air quality
phytoremediation.
Metrics
H-Index
i10 Index
Citation
5
2
123
Julia Santolin
circular economy
nutrient recovery
sustainability
environmental engineering
Metrics
H-Index
i10 Index
Citation
2
1
13
Rankings
Ranking Based On Selection: 1
Roeland Samson
Metrics
H-Index
i10 Index
Citation Counts
55
143
10,247
Air pollution biomonitoring
urban green infrastructure
ecosystem services of urban green
urban ecology
Rankings
Ranking Based On Selection: 2
Malarvannan Govindan
Metrics
H-Index
i10 Index
Citation Counts
38
82
4,512
Environmental Chemistry
Human biomonitoring
Environmental analysis
Wildlife exposure
Rankings
Ranking Based On Selection: 3
Raewyn M Town
Metrics
H-Index
i10 Index
Citation Counts
37
109
5,058
environmental physical chemistry
electrochemistry
dynamic chemical speciation
nanoparticles
bioavailability
Rankings
Ranking Based On Selection: 4
Karen Wuyts
Metrics
H-Index
i10 Index
Citation Counts
34
53
3,518
urban ecology
biogeochemistry
air pollution
environmental monitoring
phyllosphere bacteria
Rankings
Ranking Based On Selection: 5
Pieter Billen
Metrics
H-Index
i10 Index
Citation Counts
26
39
2,704
Environmental Engineering
Chemical Engineering
Materials Science
Rankings
Ranking Based On Selection: 6
Gert Van Hecken
Metrics
H-Index
i10 Index
Citation Counts
20
28
2,957
environmental justice
political ecology
payments for ecosystem services
politics of knowledge
degrowth
Rankings
Ranking Based On Selection: 7
Tim Soens
Metrics
H-Index
i10 Index
Citation Counts
19
33
1,289
environmental history
coastal wetlands
rural history
urban nature
Rankings
Ranking Based On Selection: 8
Jeong Yunsun
Metrics
H-Index
i10 Index
Citation Counts
18
25
1,278
Rankings
Ranking Based On Selection: 9
Jan Dries
Metrics
H-Index
i10 Index
Citation Counts
17
31
1,305
Rankings
Ranking Based On Selection: 10
Bram Verbinnen
Metrics
H-Index
i10 Index
Citation Counts
14
16
837
Rankings
Ranking Based On Selection: 11
Manrico Sebastiano
Metrics
H-Index
i10 Index
Citation Counts
13
15
467
conservation physiology
ecotoxicology
seabirds
environmental stress
Rankings
Ranking Based On Selection: 12
Alin C Ionas
Metrics
H-Index
i10 Index
Citation Counts
11
13
1,523
Environmental science
analytical chemistry
chromatography
mass spectrometry
Rankings
Ranking Based On Selection: 13
Giovanni Litti
Metrics
H-Index
i10 Index
Citation Counts
8
8
316
Sustainability
Built Heritage
Energy Simulation
Indoor Air Quality
Thermal Comfort
Rankings
Ranking Based On Selection: 14
Luis Diaz Allegue
Metrics
H-Index
i10 Index
Citation Counts
6
5
157
Rankings
Ranking Based On Selection: 15
Allan Augusto Alvarado-Alvarado
Metrics
H-Index
i10 Index
Citation Counts
5
2
123
Environmental engineering
bioremediation
indoor air quality
phytoremediation.
Rankings
Ranking Based On Selection: 16
Julia Santolin
Metrics
H-Index
i10 Index
Citation Counts
2
1
13
circular economy
nutrient recovery
sustainability
environmental engineering