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" (870,053 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
Lora E Fleming
Environmental and Occupational Health and Epidemiology
Public Health
Oceans and Human Health
Metrics
H-Index
i10 Index
Citation
94
307
29,272
* Rankings
Ranking Based On Selection: 2
Callum Roberts
Ocean conservation
marine protected areas
fisheries
environmental history
seabed carbon storage
Metrics
H-Index
i10 Index
Citation
85
169
37,593
* Rankings
Ranking Based On Selection: 4
Robert JW Brewin
Oceanography
Marine Optics
Remote Sensing
Phytoplankton
Citizen Science
Metrics
H-Index
i10 Index
Citation
50
107
7,882
* Rankings
Ranking Based On Selection: 5
Gáspár Jékely
Neurobiology
Evolutionary Biology
Marine Biology
Zooplankton
Metrics
H-Index
i10 Index
Citation
49
81
7,467
* Rankings
Ranking Based On Selection: 6
David Santillo
Marine ecology
environmental pollution
analytical chemistry
science policy
sustainability
Metrics
H-Index
i10 Index
Citation
42
100
8,953
Richard B Sherley
Marine Ecology
Population Dynamics
Conservation
Fisheries interactions
Marine Protected Areas
Metrics
H-Index
i10 Index
Citation
33
61
3,764
Daniel Depellegrin
Blue Economy
Marine Socio-Ecological System
Ocean Planning
Metrics
H-Index
i10 Index
Citation
29
39
2,099

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* Rankings
Ranking Based On Selection: 13
Ian Bailey
Palaeoceanography
Palaeoclimateology
continental ice-sheets
ocean circulation
aeolian dust
Metrics
H-Index
i10 Index
Citation
22
26
1,373
* Rankings
Ranking Based On Selection: 14
Kristian Metcalfe
Conservation Science
Biodiversity Conservation
Protected Areas
Spatial Ecology
Metrics
H-Index
i10 Index
Citation
19
26
1,317
* Rankings
Ranking Based On Selection: 16
Ana Rita Patricio
Sea Turtles
Marine Conservation
Population Dynamics
Population Genetics
Metrics
H-Index
i10 Index
Citation
18
27
1,131
* Rankings
Ranking Based On Selection: 18
Anthony Bicknell
Marine Ecology
Human Impact
Renewable Energy
Small-Scale Fisheries
Metrics
H-Index
i10 Index
Citation
18
19
1,311
* Rankings
Ranking Based On Selection: 19
Barend Van Maanen
Coastal processes
Coastal morphology
Biomorphodynamics
Sea level rise impacts
Numerical modelling
Metrics
H-Index
i10 Index
Citation
17
21
1,217
* Rankings
Ranking Based On Selection: 20
Robert P Ellis
Marine biology
ecological physiology
invertebrate immunology
ocean acidification
climate change
Metrics
H-Index
i10 Index
Citation
16
17
2,207
* Rankings
Ranking Based On Selection: 22
Emily Duncan
marine turtles
plastic pollution
conservation biology
Metrics
H-Index
i10 Index
Citation
15
18
2,044
* Rankings
Ranking Based On Selection: 25
Steve Rocliffe
Marine Conservation Biology
Locally Managed Marine Areas
Metrics
H-Index
i10 Index
Citation
13
14
1,079
* Rankings
Ranking Based On Selection: 26
Victoria Hobson
Marine Vertebrates
Jellyfish
Spatial Ecology
Oceanography
Metrics
H-Index
i10 Index
Citation
13
14
1,582
Daniel J Ford
Oceanography
remote sensing
biological productivity
air-sea CO2 flux
Metrics
H-Index
i10 Index
Citation
6
4
4,082
Pamela Buchan
Marine citizenship
interdisciplinary
marine social science
governance
Metrics
H-Index
i10 Index
Citation
5
3
113
Rankings
Ranking Based On Selection: 1
Lora E Fleming
Metrics
H-Index
i10 Index
Citation Counts
94
307
29,272
Environmental and Occupational Health and Epidemiology
Public Health
Oceans and Human Health
Rankings
Ranking Based On Selection: 2
Callum Roberts
Metrics
H-Index
i10 Index
Citation Counts
85
169
37,593
Ocean conservation
marine protected areas
fisheries
environmental history
seabed carbon storage
Rankings
Ranking Based On Selection: 3
Steve Simpson
Metrics
H-Index
i10 Index
Citation Counts
57
115
11,774
Rankings
Ranking Based On Selection: 4
Robert JW Brewin
Metrics
H-Index
i10 Index
Citation Counts
50
107
7,882
Oceanography
Marine Optics
Remote Sensing
Phytoplankton
Citizen Science
Rankings
Ranking Based On Selection: 5
Gáspár Jékely
Metrics
H-Index
i10 Index
Citation Counts
49
81
7,467
Neurobiology
Evolutionary Biology
Marine Biology
Zooplankton
Rankings
Ranking Based On Selection: 6
David Santillo
Metrics
H-Index
i10 Index
Citation Counts
42
100
8,953
Marine ecology
environmental pollution
analytical chemistry
science policy
sustainability
Rankings
Ranking Based On Selection: 7
Ceri Lewis
Metrics
H-Index
i10 Index
Citation Counts
40
63
10,118
Rankings
Ranking Based On Selection: 8
Richard B Sherley
Metrics
H-Index
i10 Index
Citation Counts
33
61
3,764
Marine Ecology
Population Dynamics
Conservation
Fisheries interactions
Marine Protected Areas
Rankings
Ranking Based On Selection: 9
Daniel Depellegrin
Metrics
H-Index
i10 Index
Citation Counts
29
39
2,099
Blue Economy
Marine Socio-Ecological System
Ocean Planning
Rankings
Ranking Based On Selection: 10
Ruth H Thurstan
Metrics
H-Index
i10 Index
Citation Counts
25
38
2,474

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Rankings
Ranking Based On Selection: 11
Alan F Rees
Metrics
H-Index
i10 Index
Citation Counts
25
39
2,562
Rankings
Ranking Based On Selection: 12
Sev Kender
Metrics
H-Index
i10 Index
Citation Counts
22
41
1,966
Rankings
Ranking Based On Selection: 13
Ian Bailey
Metrics
H-Index
i10 Index
Citation Counts
22
26
1,373
Palaeoceanography
Palaeoclimateology
continental ice-sheets
ocean circulation
aeolian dust
Rankings
Ranking Based On Selection: 14
Kristian Metcalfe
Metrics
H-Index
i10 Index
Citation Counts
19
26
1,317
Conservation Science
Biodiversity Conservation
Protected Areas
Spatial Ecology
Rankings
Ranking Based On Selection: 15
Helen CM Smith
Metrics
H-Index
i10 Index
Citation Counts
19
23
1,428
Rankings
Ranking Based On Selection: 16
Ana Rita Patricio
Metrics
H-Index
i10 Index
Citation Counts
18
27
1,131
Sea Turtles
Marine Conservation
Population Dynamics
Population Genetics
Rankings
Ranking Based On Selection: 17
Elizabeth A Williams
Metrics
H-Index
i10 Index
Citation Counts
18
22
1,227
Rankings
Ranking Based On Selection: 18
Anthony Bicknell
Metrics
H-Index
i10 Index
Citation Counts
18
19
1,311
Marine Ecology
Human Impact
Renewable Energy
Small-Scale Fisheries
Rankings
Ranking Based On Selection: 19
Barend Van Maanen
Metrics
H-Index
i10 Index
Citation Counts
17
21
1,217
Coastal processes
Coastal morphology
Biomorphodynamics
Sea level rise impacts
Numerical modelling
Rankings
Ranking Based On Selection: 20
Robert P Ellis
Metrics
H-Index
i10 Index
Citation Counts
16
17
2,207
Marine biology
ecological physiology
invertebrate immunology
ocean acidification
climate change
Rankings
Ranking Based On Selection: 21
Tomas Chaigneau
Metrics
H-Index
i10 Index
Citation Counts
15
19
1,375
Rankings
Ranking Based On Selection: 22
Emily Duncan
Metrics
H-Index
i10 Index
Citation Counts
15
18
2,044
Rankings
Ranking Based On Selection: 23
Adam Porter
Metrics
H-Index
i10 Index
Citation Counts
14
15
1,658
Rankings
Ranking Based On Selection: 24
Stephen K Pikesley
Metrics
H-Index
i10 Index
Citation Counts
14
16
657
Rankings
Ranking Based On Selection: 25
Steve Rocliffe
Metrics
H-Index
i10 Index
Citation Counts
13
14
1,079
Rankings
Ranking Based On Selection: 26
Victoria Hobson
Metrics
H-Index
i10 Index
Citation Counts
13
14
1,582
Rankings
Ranking Based On Selection: 27
Chenyu Zhao
Metrics
H-Index
i10 Index
Citation Counts
9
8
276
Rankings
Ranking Based On Selection: 28
Evgeny Genelt-Yanovskiy
Metrics
H-Index
i10 Index
Citation Counts
8
3
172
Rankings
Ranking Based On Selection: 31
Daniel J Ford
Metrics
H-Index
i10 Index
Citation Counts
6
4
4,082
Oceanography
remote sensing
biological productivity
air-sea CO2 flux
Rankings
Ranking Based On Selection: 32
Pamela Buchan
Metrics
H-Index
i10 Index
Citation Counts
5
3
113
Marine citizenship
interdisciplinary
marine social science
governance
Rankings
Ranking Based On Selection: 33
Jamie Luxmoore
Metrics
H-Index
i10 Index
Citation Counts
4
2
59
Rankings
Ranking Based On Selection: 34
Jodi Walsh
Metrics
H-Index
i10 Index
Citation Counts
3
3
83
Rankings
Ranking Based On Selection: 35
Thomas W Horton
Metrics
H-Index
i10 Index
Citation Counts
3
2
50