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" (870,057 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
Peter Cox
Terrestrial Carbon Cycle
Earth System Modelling
Emergent Constraints
Metrics
H-Index
i10 Index
Citation
96
189
63,622
* Rankings
Ranking Based On Selection: 3
David Butler
urban drainage
water engineering
urban water
urban water systems
urban water management
Metrics
H-Index
i10 Index
Citation
81
359
27,528
* Rankings
Ranking Based On Selection: 5
Matthew J Witt
Biologging
Renewable energy
Marine biodiversity
Fisheries
Animal movement
Metrics
H-Index
i10 Index
Citation
55
117
11,293
* Rankings
Ranking Based On Selection: 6
Guangtao Fu
Water supply Urban drainage Urban wastewater systems Deep learning Artificial Intelligence
Metrics
H-Index
i10 Index
Citation
54
139
11,228
* Rankings
Ranking Based On Selection: 8
Stephan Harrison
Climate change
mountain systems
glaciers
climate impacts
Quaternary science
Metrics
H-Index
i10 Index
Citation
54
125
9,612

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* Rankings
Ranking Based On Selection: 11
Raziyeh Farmani
Water Engineering
Water Resources Managment
Water infrastructure
Hydroinformatics
Metrics
H-Index
i10 Index
Citation
44
101
8,084
* Rankings
Ranking Based On Selection: 12
Albert S Chen
Urban Drainage
Flood Modelling
Hydrology & Hydraulic
Hazard Mitigation & Resilience
WASH & Health
Metrics
H-Index
i10 Index
Citation
40
82
6,366
* Rankings
Ranking Based On Selection: 14
Anna Harper
climate
carbon cycle
Earth system models
climate mitigation
Metrics
H-Index
i10 Index
Citation
37
55
8,030
* Rankings
Ranking Based On Selection: 15
Fayyaz Ali Memon
Water demand management
decision support systems
water and wastewater treatment
rainwater harvesting
water management for de
Metrics
H-Index
i10 Index
Citation
35
70
5,153
* Rankings
Ranking Based On Selection: 16
Rebecca Lovell
Natural Environments
Biodiversity
Health
Wellbeing
Inteventions
Metrics
H-Index
i10 Index
Citation
34
51
12,878
* Rankings
Ranking Based On Selection: 18
Catherine Butler
Environmental governance
Energy
Climate Change
Public Perceptions
Floods
Metrics
H-Index
i10 Index
Citation
31
44
4,675
* Rankings
Ranking Based On Selection: 19
James Grellier
environmental epidemiology
radiation
health impact assessment
public health
nature contact
Metrics
H-Index
i10 Index
Citation
30
38
5,147
* Rankings
Ranking Based On Selection: 20
Clare Saunders
social movements
protest
pro-environmental behaviour
social networks
Metrics
H-Index
i10 Index
Citation
30
61
5,586
* Rankings
Ranking Based On Selection: 22
Theodoros Economou
Climate change and health
Bayesian statistical modelling
Environmental science
Epedimiology
Metrics
H-Index
i10 Index
Citation
27
50
2,701
* Rankings
Ranking Based On Selection: 23
Thomas Roland
Environmental science
Ecosystems
Climate change
Long-term ecology
Metrics
H-Index
i10 Index
Citation
27
38
2,844
* Rankings
Ranking Based On Selection: 24
Philip L Staddon
climate change
human health
ecology
soil ecology
mycorrhizas
Metrics
H-Index
i10 Index
Citation
27
31
3,582
* Rankings
Ranking Based On Selection: 26
Rachel Turner
Marine Resources
Governance
Fisheries
Wellbeing
Resilience
Metrics
H-Index
i10 Index
Citation
24
38
2,632
* Rankings
Ranking Based On Selection: 27
Nans Addor
Hydrological modelling
Climate change impacts
Large-sample hydrology
Metrics
H-Index
i10 Index
Citation
23
30
3,281
* Rankings
Ranking Based On Selection: 29
Anurag Roy
Dye Sensitized Solar Cells
Perovskite Solar Cells
Functional Nanomaterials
Window Glazing
Metrics
H-Index
i10 Index
Citation
22
48
2,151
* Rankings
Ranking Based On Selection: 30
S Vinod Kumar
Environmental signalling
temperature perception
plant immunity
gene regulation
Metrics
H-Index
i10 Index
Citation
20
22
4,092
* Rankings
Ranking Based On Selection: 32
David J Baker
ecology
conservation biology
landscape decisions
nature recovery
Metrics
H-Index
i10 Index
Citation
17
24
1,557
* Rankings
Ranking Based On Selection: 34
Daniel Padfield
Community Ecology
Microbial Ecology
Climate Change Ecology
Metrics
H-Index
i10 Index
Citation
16
23
1,435
* Rankings
Ranking Based On Selection: 36
Kirsten E Abernethy
Fisheries
Interdisciplinary research
Environmental change
Adaptation
Metrics
H-Index
i10 Index
Citation
16
20
1,164
* Rankings
Ranking Based On Selection: 37
Peter Kennedy
Animal behaviour
Agricultural Entomology
Insect Ecology
Ecotoxicology
Metrics
H-Index
i10 Index
Citation
15
20
1,182
* Rankings
Ranking Based On Selection: 39
Guy Lomax
Carbon dioxide removal
climate change
land use change
soil carbon sequestration
natural climate solutions
Metrics
H-Index
i10 Index
Citation
13
13
5,186
Magdalena Mleczko
Remote Sensing
Pol-In-SAR
Wetlands
Agriculture
Image Classifications
Metrics
H-Index
i10 Index
Citation
6
3
116
Mikkel Bue Lykkegaard
Hydro-Environmental Engineering
Uncertainty Quantification
Machine Learning
Metrics
H-Index
i10 Index
Citation
5
5
91
Virginia Thomas
Environmental social science
environmental policy
animal studies
human / wildlife conflict and co
Metrics
H-Index
i10 Index
Citation
5
2
73
Filippo Marino
Ecological and Socio-political dimensions of biodiversity conservation
Metrics
H-Index
i10 Index
Citation
3
1
47
Robin Fisher
marine biology
marine ecology
animal behaviour
shark conservation
Metrics
H-Index
i10 Index
Citation
1
0
3
Rankings
Ranking Based On Selection: 1
Peter Cox
Metrics
H-Index
i10 Index
Citation Counts
96
189
63,622
Terrestrial Carbon Cycle
Earth System Modelling
Emergent Constraints
Rankings
Ranking Based On Selection: 2
Michael Depledge
Metrics
H-Index
i10 Index
Citation Counts
96
299
39,405
Rankings
Ranking Based On Selection: 3
David Butler
Metrics
H-Index
i10 Index
Citation Counts
81
359
27,528
urban drainage
water engineering
urban water
urban water systems
urban water management
Rankings
Ranking Based On Selection: 4
Dan Charman
Metrics
H-Index
i10 Index
Citation Counts
73
186
17,933
Rankings
Ranking Based On Selection: 5
Matthew J Witt
Metrics
H-Index
i10 Index
Citation Counts
55
117
11,293
Biologging
Renewable energy
Marine biodiversity
Fisheries
Animal movement
Rankings
Ranking Based On Selection: 6
Guangtao Fu
Metrics
H-Index
i10 Index
Citation Counts
54
139
11,228
Water supply Urban drainage Urban wastewater systems Deep learning Artificial Intelligence
Rankings
Ranking Based On Selection: 7
Benedict W Wheeler
Metrics
H-Index
i10 Index
Citation Counts
54
91
17,270
Rankings
Ranking Based On Selection: 8
Stephan Harrison
Metrics
H-Index
i10 Index
Citation Counts
54
125
9,612
Climate change
mountain systems
glaciers
climate impacts
Quaternary science
Rankings
Ranking Based On Selection: 9
James Screen
Metrics
H-Index
i10 Index
Citation Counts
53
86
17,832

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
Raziyeh Farmani
Metrics
H-Index
i10 Index
Citation Counts
44
101
8,084
Water Engineering
Water Resources Managment
Water infrastructure
Hydroinformatics
Rankings
Ranking Based On Selection: 12
Albert S Chen
Metrics
H-Index
i10 Index
Citation Counts
40
82
6,366
Urban Drainage
Flood Modelling
Hydrology & Hydraulic
Hazard Mitigation & Resilience
WASH & Health
Rankings
Ranking Based On Selection: 13
Karyn Morrissey
Metrics
H-Index
i10 Index
Citation Counts
40
82
12,245
Rankings
Ranking Based On Selection: 14
Anna Harper
Metrics
H-Index
i10 Index
Citation Counts
37
55
8,030
Rankings
Ranking Based On Selection: 15
Fayyaz Ali Memon
Metrics
H-Index
i10 Index
Citation Counts
35
70
5,153
Water demand management
decision support systems
water and wastewater treatment
rainwater harvesting
water management for de
Rankings
Ranking Based On Selection: 16
Rebecca Lovell
Metrics
H-Index
i10 Index
Citation Counts
34
51
12,878
Natural Environments
Biodiversity
Health
Wellbeing
Inteventions
Rankings
Ranking Based On Selection: 17
Rolf Aalto
Metrics
H-Index
i10 Index
Citation Counts
32
41
4,930
Rankings
Ranking Based On Selection: 18
Catherine Butler
Metrics
H-Index
i10 Index
Citation Counts
31
44
4,675
Environmental governance
Energy
Climate Change
Public Perceptions
Floods
Rankings
Ranking Based On Selection: 19
James Grellier
Metrics
H-Index
i10 Index
Citation Counts
30
38
5,147
environmental epidemiology
radiation
health impact assessment
public health
nature contact
Rankings
Ranking Based On Selection: 20
Clare Saunders
Metrics
H-Index
i10 Index
Citation Counts
30
61
5,586
social movements
protest
pro-environmental behaviour
social networks
Rankings
Ranking Based On Selection: 21
Duncan Russel
Metrics
H-Index
i10 Index
Citation Counts
28
45
3,418
Rankings
Ranking Based On Selection: 22
Theodoros Economou
Metrics
H-Index
i10 Index
Citation Counts
27
50
2,701
Climate change and health
Bayesian statistical modelling
Environmental science
Epedimiology
Rankings
Ranking Based On Selection: 23
Thomas Roland
Metrics
H-Index
i10 Index
Citation Counts
27
38
2,844
Environmental science
Ecosystems
Climate change
Long-term ecology
Rankings
Ranking Based On Selection: 24
Philip L Staddon
Metrics
H-Index
i10 Index
Citation Counts
27
31
3,582
climate change
human health
ecology
soil ecology
mycorrhizas
Rankings
Ranking Based On Selection: 25
Michael Mike O Sullivan
Metrics
H-Index
i10 Index
Citation Counts
24
29
10,259
Rankings
Ranking Based On Selection: 26
Rachel Turner
Metrics
H-Index
i10 Index
Citation Counts
24
38
2,632
Rankings
Ranking Based On Selection: 27
Nans Addor
Metrics
H-Index
i10 Index
Citation Counts
23
30
3,281
Hydrological modelling
Climate change impacts
Large-sample hydrology
Rankings
Ranking Based On Selection: 28
Sally Rangecroft
Metrics
H-Index
i10 Index
Citation Counts
23
28
2,938
Rankings
Ranking Based On Selection: 29
Anurag Roy
Metrics
H-Index
i10 Index
Citation Counts
22
48
2,151
Dye Sensitized Solar Cells
Perovskite Solar Cells
Functional Nanomaterials
Window Glazing
Rankings
Ranking Based On Selection: 30
S Vinod Kumar
Metrics
H-Index
i10 Index
Citation Counts
20
22
4,092
Environmental signalling
temperature perception
plant immunity
gene regulation
Rankings
Ranking Based On Selection: 31
Ian Alcock
Metrics
H-Index
i10 Index
Citation Counts
17
18
5,676
Rankings
Ranking Based On Selection: 32
David J Baker
Metrics
H-Index
i10 Index
Citation Counts
17
24
1,557
ecology
conservation biology
landscape decisions
nature recovery
Rankings
Ranking Based On Selection: 34
Daniel Padfield
Metrics
H-Index
i10 Index
Citation Counts
16
23
1,435
Rankings
Ranking Based On Selection: 35
Tara Quinn
Metrics
H-Index
i10 Index
Citation Counts
16
20
4,328
Rankings
Ranking Based On Selection: 36
Kirsten E Abernethy
Metrics
H-Index
i10 Index
Citation Counts
16
20
1,164
Fisheries
Interdisciplinary research
Environmental change
Adaptation
Rankings
Ranking Based On Selection: 37
Peter Kennedy
Metrics
H-Index
i10 Index
Citation Counts
15
20
1,182
Animal behaviour
Agricultural Entomology
Insect Ecology
Ecotoxicology
Rankings
Ranking Based On Selection: 38
Allan Butler
Metrics
H-Index
i10 Index
Citation Counts
14
15
986
Rankings
Ranking Based On Selection: 39
Guy Lomax
Metrics
H-Index
i10 Index
Citation Counts
13
13
5,186
Carbon dioxide removal
climate change
land use change
soil carbon sequestration
natural climate solutions
Rankings
Ranking Based On Selection: 40
James Fullam
Metrics
H-Index
i10 Index
Citation Counts
13
15
12,079
Rankings
Ranking Based On Selection: 41
Joanne Laura Wood
Metrics
H-Index
i10 Index
Citation Counts
8
8
387
Rankings
Ranking Based On Selection: 42
Magdalena Mleczko
Metrics
H-Index
i10 Index
Citation Counts
6
3
116
Remote Sensing
Pol-In-SAR
Wetlands
Agriculture
Image Classifications
Rankings
Ranking Based On Selection: 43
Miguel Varela
Metrics
H-Index
i10 Index
Citation Counts
5
5
554
Rankings
Ranking Based On Selection: 44
Mikkel Bue Lykkegaard
Metrics
H-Index
i10 Index
Citation Counts
5
5
91
Hydro-Environmental Engineering
Uncertainty Quantification
Machine Learning
Rankings
Ranking Based On Selection: 45
Bert Wuyts
Metrics
H-Index
i10 Index
Citation Counts
5
3
151
Rankings
Ranking Based On Selection: 46
Virginia Thomas
Metrics
H-Index
i10 Index
Citation Counts
5
2
73
Environmental social science
environmental policy
animal studies
human / wildlife conflict and co
Rankings
Ranking Based On Selection: 48
Filippo Marino
Metrics
H-Index
i10 Index
Citation Counts
3
1
47
Ecological and Socio-political dimensions of biodiversity conservation
Rankings
Ranking Based On Selection: 49
Laura Roldan-Gomez
Metrics
H-Index
i10 Index
Citation Counts
1
1
27
Rankings
Ranking Based On Selection: 50
Robin Fisher
Metrics
H-Index
i10 Index
Citation Counts
1
0
3
marine biology
marine ecology
animal behaviour
shark conservation