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" (873,690 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
John R Speakman
Physiological ecology
Energetics
Obesity
Aging
Lactation
Metrics
H-Index
i10 Index
Citation
122
605
58,662
* Rankings
Ranking Based On Selection: 2
Paul Thompson
Marine Mammal & Seabird Ecology
Conservation Biology
Marine Renewables
Metrics
H-Index
i10 Index
Citation
76
186
18,681
* Rankings
Ranking Based On Selection: 3
David Burslem
Ecology
Conservation Biology
Forest Science
Metrics
H-Index
i10 Index
Citation
69
178
17,184
* Rankings
Ranking Based On Selection: 4
Xavier Lambin
ecology
conservation
dispersal
trophic interactions
invasive species
Metrics
H-Index
i10 Index
Citation
66
173
14,360
* Rankings
Ranking Based On Selection: 5
Justin Travis
Theoretical Ecology
Evolutionary Biology
Conservation Biology
Metrics
H-Index
i10 Index
Citation
65
149
18,621
* Rankings
Ranking Based On Selection: 6
Steve Redpath
Population ecology
conservation science
Metrics
H-Index
i10 Index
Citation
64
192
14,553
* Rankings
Ranking Based On Selection: 7
Imants G Priede
Fish biology
deep-sea biology
marine science
fisheries
Metrics
H-Index
i10 Index
Citation
60
165
11,467
* Rankings
Ranking Based On Selection: 8
Alan Walker
Intestinal microbiota
Gut microbiology
Microbial ecology
Metrics
H-Index
i10 Index
Citation
59
99
23,535

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* Rankings
Ranking Based On Selection: 14
David Stead
Proteomics
Mass Spectrometry
Chromatography and Electrophoresis
Biology
Metrics
H-Index
i10 Index
Citation
28
41
2,908
* Rankings
Ranking Based On Selection: 15
Lesley T Lancaster
speciation and extinction
phylogeography
fitness
population genetics
evolution of geographic ranges
Metrics
H-Index
i10 Index
Citation
26
48
3,275
* Rankings
Ranking Based On Selection: 16
Greta Bocedi
Evolutionary Biology
Ecology
Animal Behaviour
Metrics
H-Index
i10 Index
Citation
25
41
3,655
* Rankings
Ranking Based On Selection: 18
Ashish A Malik
Microbial Ecology
Biogeochemistry
Soil Carbon Cycling
Climate Change
Land use
Metrics
H-Index
i10 Index
Citation
19
23
4,564
* Rankings
Ranking Based On Selection: 19
Yasushi Saka
Systems Biology
Embryology
Developmental Biology
Pattern Formation
Synthetic Biology
Metrics
H-Index
i10 Index
Citation
19
21
2,278
* Rankings
Ranking Based On Selection: 20
Matthew K Oliver
Ecology
Evolutionary biology
Conservation Biology
Metrics
H-Index
i10 Index
Citation
18
21
2,265
* Rankings
Ranking Based On Selection: 21
Davina Derous
Comparative physiology
energy metabolism
omics
molecular data
Metrics
H-Index
i10 Index
Citation
16
19
825
* Rankings
Ranking Based On Selection: 22
Tom Vogwill
Experimental evolution
microbial ecology
antibiotic resistance
bacteriophages
Metrics
H-Index
i10 Index
Citation
16
16
1,842
* Rankings
Ranking Based On Selection: 24
Ana Payo-Payo
Ecology
population dynamics
demography
conservation.
Metrics
H-Index
i10 Index
Citation
14
16
628
* Rankings
Ranking Based On Selection: 26
Bernard Moyersoen
Mycorrhizas
tropical ecology
biodiversity
systematics
biogeography
Metrics
H-Index
i10 Index
Citation
14
15
1,272
* Rankings
Ranking Based On Selection: 27
Leonel Herrera-Alsina
macroevolution
macroecology
trait evolution
community ecology
spatial distribution of biodiversity
Metrics
H-Index
i10 Index
Citation
13
17
527
* Rankings
Ranking Based On Selection: 28
Helen B Anderson
Arctic ecology
plant-herbivore interactions
invasive species
bumblebees foraging
seabird diet
Metrics
H-Index
i10 Index
Citation
11
11
456
Angela G Bartolo
Biology
Genetics
Conservation
Non-indigenous species
Ecology
Metrics
H-Index
i10 Index
Citation
6
6
313
Thom Shannon
Ornithology
cryptic speciation
phylogenetics
taxonomy
Metrics
H-Index
i10 Index
Citation
5
3
59
David Flood Chavez
Evolutionary economic geography
evolution of tourism destinations
political ecology
political ecology of tourism
sustainability transitions
Metrics
H-Index
i10 Index
Citation
3
1
31
Rankings
Ranking Based On Selection: 1
John R Speakman
Metrics
H-Index
i10 Index
Citation Counts
122
605
58,662
Physiological ecology
Energetics
Obesity
Aging
Lactation
Rankings
Ranking Based On Selection: 2
Paul Thompson
Metrics
H-Index
i10 Index
Citation Counts
76
186
18,681
Marine Mammal & Seabird Ecology
Conservation Biology
Marine Renewables
Rankings
Ranking Based On Selection: 3
David Burslem
Metrics
H-Index
i10 Index
Citation Counts
69
178
17,184
Rankings
Ranking Based On Selection: 4
Xavier Lambin
Metrics
H-Index
i10 Index
Citation Counts
66
173
14,360
ecology
conservation
dispersal
trophic interactions
invasive species
Rankings
Ranking Based On Selection: 5
Justin Travis
Metrics
H-Index
i10 Index
Citation Counts
65
149
18,621
Theoretical Ecology
Evolutionary Biology
Conservation Biology
Rankings
Ranking Based On Selection: 6
Steve Redpath
Metrics
H-Index
i10 Index
Citation Counts
64
192
14,553
Rankings
Ranking Based On Selection: 7
Imants G Priede
Metrics
H-Index
i10 Index
Citation Counts
60
165
11,467
Fish biology
deep-sea biology
marine science
fisheries
Rankings
Ranking Based On Selection: 8
Alan Walker
Metrics
H-Index
i10 Index
Citation Counts
59
99
23,535
Intestinal microbiota
Gut microbiology
Microbial ecology
Rankings
Ranking Based On Selection: 9
Pieter van West
Metrics
H-Index
i10 Index
Citation Counts
54
106
13,174
Rankings
Ranking Based On Selection: 10
Stuart Piertney
Metrics
H-Index
i10 Index
Citation Counts
52
117
9,394

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
Dimitri Mauquoy
Metrics
H-Index
i10 Index
Citation Counts
46
82
7,849
Rankings
Ranking Based On Selection: 12
Ursula Witte
Metrics
H-Index
i10 Index
Citation Counts
42
79
8,578
Rankings
Ranking Based On Selection: 13
Davide Dionisi
Metrics
H-Index
i10 Index
Citation Counts
30
46
3,540
Rankings
Ranking Based On Selection: 14
David Stead
Metrics
H-Index
i10 Index
Citation Counts
28
41
2,908
Proteomics
Mass Spectrometry
Chromatography and Electrophoresis
Biology
Rankings
Ranking Based On Selection: 15
Lesley T Lancaster
Metrics
H-Index
i10 Index
Citation Counts
26
48
3,275
speciation and extinction
phylogeography
fitness
population genetics
evolution of geographic ranges
Rankings
Ranking Based On Selection: 16
Greta Bocedi
Metrics
H-Index
i10 Index
Citation Counts
25
41
3,655
Evolutionary Biology
Ecology
Animal Behaviour
Rankings
Ranking Based On Selection: 17
Pablo García Díaz
Metrics
H-Index
i10 Index
Citation Counts
21
35
1,762
Rankings
Ranking Based On Selection: 18
Ashish A Malik
Metrics
H-Index
i10 Index
Citation Counts
19
23
4,564
Microbial Ecology
Biogeochemistry
Soil Carbon Cycling
Climate Change
Land use
Rankings
Ranking Based On Selection: 19
Yasushi Saka
Metrics
H-Index
i10 Index
Citation Counts
19
21
2,278
Systems Biology
Embryology
Developmental Biology
Pattern Formation
Synthetic Biology
Rankings
Ranking Based On Selection: 20
Matthew K Oliver
Metrics
H-Index
i10 Index
Citation Counts
18
21
2,265
Ecology
Evolutionary biology
Conservation Biology
Rankings
Ranking Based On Selection: 21
Davina Derous
Metrics
H-Index
i10 Index
Citation Counts
16
19
825
Comparative physiology
energy metabolism
omics
molecular data
Rankings
Ranking Based On Selection: 22
Tom Vogwill
Metrics
H-Index
i10 Index
Citation Counts
16
16
1,842
Experimental evolution
microbial ecology
antibiotic resistance
bacteriophages
Rankings
Ranking Based On Selection: 23
Aurore Ponchon
Metrics
H-Index
i10 Index
Citation Counts
15
19
873
Rankings
Ranking Based On Selection: 24
Ana Payo-Payo
Metrics
H-Index
i10 Index
Citation Counts
14
16
628
Ecology
population dynamics
demography
conservation.
Rankings
Ranking Based On Selection: 25
Rodrigo Belmonte
Metrics
H-Index
i10 Index
Citation Counts
14
14
1,057
Rankings
Ranking Based On Selection: 26
Bernard Moyersoen
Metrics
H-Index
i10 Index
Citation Counts
14
15
1,272
Mycorrhizas
tropical ecology
biodiversity
systematics
biogeography
Rankings
Ranking Based On Selection: 27
Leonel Herrera-Alsina
Metrics
H-Index
i10 Index
Citation Counts
13
17
527
macroevolution
macroecology
trait evolution
community ecology
spatial distribution of biodiversity
Rankings
Ranking Based On Selection: 28
Helen B Anderson
Metrics
H-Index
i10 Index
Citation Counts
11
11
456
Arctic ecology
plant-herbivore interactions
invasive species
bumblebees foraging
seabird diet
Rankings
Ranking Based On Selection: 29
Mael Le Corre
Metrics
H-Index
i10 Index
Citation Counts
10
10
400
Rankings
Ranking Based On Selection: 30
Chinelo Miriam Onochie (Ozojie)
Metrics
H-Index
i10 Index
Citation Counts
8
7
337
Stem cells
Germ cells
Immunochemistry
Histology
Rankings
Ranking Based On Selection: 31
Angela G Bartolo
Metrics
H-Index
i10 Index
Citation Counts
6
6
313
Biology
Genetics
Conservation
Non-indigenous species
Ecology
Rankings
Ranking Based On Selection: 32
Elaine M Cowan
Metrics
H-Index
i10 Index
Citation Counts
6
3
98
Rankings
Ranking Based On Selection: 33
Thom Shannon
Metrics
H-Index
i10 Index
Citation Counts
5
3
59
Ornithology
cryptic speciation
phylogenetics
taxonomy
Rankings
Ranking Based On Selection: 34
David Flood Chavez
Metrics
H-Index
i10 Index
Citation Counts
3
1
31
Evolutionary economic geography
evolution of tourism destinations
political ecology
political ecology of tourism
sustainability transitions