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 :3
Martin Siegert
Ice sheets
Glaciology
Geophysics
Antarctica
Climate Change
Metrics
H-Index
i10 Index
Citation
68
229
21,513
* Rankings
Ranking Based On Selection :6
Voulvoulis N
Environmental Technology
Environmental Management
Systems Thinking
Water management
Resources
Metrics
H-Index
i10 Index
Citation
60
128
16,405
* Rankings
Ranking Based On Selection :8
Clive Potter
Social risk and plant biosecurity
Payments for ecosystem services and neoliberal nature
Metrics
H-Index
i10 Index
Citation
47
90
8,387
Peter JG Pearson
Past & prospective long run energy & infrastructure transitions & their energy & environmental policy implications
Metrics
H-Index
i10 Index
Citation
36
88
8,084
* Rankings
Ranking Based On Selection :10
William R Sheate|Bill Sheate
EIA/SEA
environmental policy & evaluation
mindfulness and sustainability
Metrics
H-Index
i10 Index
Citation
34
61
4,732
* Rankings
Ranking Based On Selection :11
ALEXANDRE KOBERLE
climate change
environmental policy
sustainable development
integrated assessment
global change
Metrics
H-Index
i10 Index
Citation
30
45
4,324
* Rankings
Ranking Based On Selection :13
Toby Athersuch
Environmental Toxicology
Biomarkers
Analytical Chemistry
Spectroscopy
Metrics
H-Index
i10 Index
Citation
30
40
2,884
* Rankings
Ranking Based On Selection :14
Maarten van Reeuwijk
Environmental and urban flows
buoyancy and turbulence
numerical simulation
modelling
Metrics
H-Index
i10 Index
Citation
28
63
2,162
Caroline Howe
Biodiversity
Ecosystem Services
Poverty
Development
Human Wellbeing
Metrics
H-Index
i10 Index
Citation
15
17
2,010
Matthew L Thomas
Spatio-Temporal Statistics
Spatial Statistics
Bayesian Statistics. Air pollution
Health
HIV epidemiology
Metrics
H-Index
i10 Index
Citation
12
13
23,040
Hannah Rigby
Environmental Sustainability
Environmental Engineering
Environmental Chemistry
Metrics
H-Index
i10 Index
Citation
12
12
774
Sarah Jones
Environmental Sciences
Microbiology
Geomicrobiology
Contaminated land
Remediation
Metrics
H-Index
i10 Index
Citation
6
6
366
Paola A Sáenz Cavazos
environmental engineering
carbon capture
carbon capture and conversion
energy
adsorption
Metrics
H-Index
i10 Index
Citation
6
5
217
Rankings
Ranking Based On Selection: 1
Frank Kelly
Metrics
H-Index
i10 Index
Citation Counts
111
381
51,900
Rankings
Ranking Based On Selection: 2
Joeri Rogelj
Metrics
H-Index
i10 Index
Citation Counts
94
174
76,847
Rankings
Ranking Based On Selection: 3
Martin Siegert
Metrics
H-Index
i10 Index
Citation Counts
68
229
21,513
Rankings
Ranking Based On Selection: 5
Wouter Buytaert
Metrics
H-Index
i10 Index
Citation Counts
62
140
15,749
Rankings
Ranking Based On Selection: 6
Voulvoulis N
Metrics
H-Index
i10 Index
Citation Counts
60
128
16,405
Environmental Technology
Environmental Management
Systems Thinking
Water management
Resources
Rankings
Ranking Based On Selection: 7
Apostolos Voulgarakis
Metrics
H-Index
i10 Index
Citation Counts
49
81
14,481
Rankings
Ranking Based On Selection: 8
Clive Potter
Metrics
H-Index
i10 Index
Citation Counts
47
90
8,387
Social risk and plant biosecurity
Payments for ecosystem services and neoliberal nature
Rankings
Ranking Based On Selection: 9
Peter JG Pearson
Metrics
H-Index
i10 Index
Citation Counts
36
88
8,084
Past & prospective long run energy & infrastructure transitions & their energy & environmental policy implications
Rankings
Ranking Based On Selection: 10
William R Sheate|Bill Sheate
Metrics
H-Index
i10 Index
Citation Counts
34
61
4,732
EIA/SEA
environmental policy & evaluation
mindfulness and sustainability
Rankings
Ranking Based On Selection: 11
ALEXANDRE KOBERLE
Metrics
H-Index
i10 Index
Citation Counts
30
45
4,324
climate change
environmental policy
sustainable development
integrated assessment
global change
Rankings
Ranking Based On Selection: 12
Susan Hodgson
Metrics
H-Index
i10 Index
Citation Counts
30
43
2,960
Rankings
Ranking Based On Selection: 13
Toby Athersuch
Metrics
H-Index
i10 Index
Citation Counts
30
40
2,884
Environmental Toxicology
Biomarkers
Analytical Chemistry
Spectroscopy
Rankings
Ranking Based On Selection: 14
Maarten van Reeuwijk
Metrics
H-Index
i10 Index
Citation Counts
28
63
2,162
Environmental and urban flows
buoyancy and turbulence
numerical simulation
modelling
Rankings
Ranking Based On Selection: 15
Tuan V Vu
Metrics
H-Index
i10 Index
Citation Counts
23
37
2,522
Rankings
Ranking Based On Selection: 16
Robert Wright
Metrics
H-Index
i10 Index
Citation Counts
23
42
2,556
Rankings
Ranking Based On Selection: 17
Anna Font
Metrics
H-Index
i10 Index
Citation Counts
18
21
1,917
Rankings
Ranking Based On Selection: 18
Yiannis Kountouris
Metrics
H-Index
i10 Index
Citation Counts
15
19
1,017
Rankings
Ranking Based On Selection: 19
Caroline Howe
Metrics
H-Index
i10 Index
Citation Counts
15
17
2,010
Biodiversity
Ecosystem Services
Poverty
Development
Human Wellbeing
Rankings
Ranking Based On Selection: 20
Zhenggang Nie
Metrics
H-Index
i10 Index
Citation Counts
13
15
1,029
Rankings
Ranking Based On Selection: 21
Matthew L Thomas
Metrics
H-Index
i10 Index
Citation Counts
12
13
23,040
Spatio-Temporal Statistics
Spatial Statistics
Bayesian Statistics. Air pollution
Health
HIV epidemiology
Rankings
Ranking Based On Selection: 22
Christopher JM Emmott
Metrics
H-Index
i10 Index
Citation Counts
12
14
2,989
Rankings
Ranking Based On Selection: 23
Hannah Rigby
Metrics
H-Index
i10 Index
Citation Counts
12
12
774
Environmental Sustainability
Environmental Engineering
Environmental Chemistry
Rankings
Ranking Based On Selection: 24
Richard Carmichael
Metrics
H-Index
i10 Index
Citation Counts
10
12
755
Rankings
Ranking Based On Selection: 25
Bhopal Pandeya
Metrics
H-Index
i10 Index
Citation Counts
9
9
1,476
Rankings
Ranking Based On Selection: 26
James Bone
Metrics
H-Index
i10 Index
Citation Counts
8
8
586
Rankings
Ranking Based On Selection: 27
Sarah Jones
Metrics
H-Index
i10 Index
Citation Counts
6
6
366
Environmental Sciences
Microbiology
Geomicrobiology
Contaminated land
Remediation
Rankings
Ranking Based On Selection: 28
Paola A Sáenz Cavazos
Metrics
H-Index
i10 Index
Citation Counts
6
5
217
environmental engineering
carbon capture
carbon capture and conversion
energy
adsorption
Rankings
Ranking Based On Selection: 29
Chrysoula Sfynia
Metrics
H-Index
i10 Index
Citation Counts
4
3
65
Rankings
Ranking Based On Selection: 30
Genevieve Mcinnes
Metrics
H-Index
i10 Index
Citation Counts
2
2
26