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" (1,014,157 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
Thomas Brooks
Conservation Biology
Biodiversity
Extinction
Ecology
Ornithology
Metrics
H-Index
i10 Index
Citation
93
206
58,673
* Rankings
Ranking Based On Selection :7
Ana Luisa Nunes
Freshwater Biology
Biological Invasions
Evolutionary Ecology
Metrics
H-Index
i10 Index
Citation
19
21
1,502
* Rankings
Ranking Based On Selection :10
Randall R. Jiménez
Microbial Ecology
Biostatistics
Spatial Ecology
Amphibians
Conservation
Metrics
H-Index
i10 Index
Citation
12
13
573
* Rankings
Ranking Based On Selection :13
Ananda Mallawatantri
Environment
Ecosystem based Risk Reduction
Climate Change and Participatory Approaches in Development
Metrics
H-Index
i10 Index
Citation
10
10
620
Satrio A Wicaksono
forest and land policy
sustainability
climate science
Metrics
H-Index
i10 Index
Citation
8
7
279
Ken Kassem
environment
sustainability
coral reefs
tropical fisheries
climate change
Metrics
H-Index
i10 Index
Citation
6
6
317
Rio Doce Panel
impact assessment
ecosystem restoration
nature-based solutions
ecology economy
water management
Metrics
H-Index
i10 Index
Citation
2
0
16
Rankings
Ranking Based On Selection: 1
Thomas Brooks
Metrics
H-Index
i10 Index
Citation Counts
93
206
58,673
Conservation Biology
Biodiversity
Extinction
Ecology
Ornithology
Rankings
Ranking Based On Selection: 2
Stephen Woodley
Metrics
H-Index
i10 Index
Citation Counts
36
69
7,034
Rankings
Ranking Based On Selection: 3
Juha Siikamäki
Metrics
H-Index
i10 Index
Citation Counts
26
46
6,273
Rankings
Ranking Based On Selection: 4
Kevin Smith
Metrics
H-Index
i10 Index
Citation Counts
25
27
4,443
Rankings
Ranking Based On Selection: 5
Catherine Numa
Metrics
H-Index
i10 Index
Citation Counts
24
36
2,270
Rankings
Ranking Based On Selection: 6
Annabelle Cuttelod
Metrics
H-Index
i10 Index
Citation Counts
19
21
4,754
Rankings
Ranking Based On Selection: 7
Ana Luisa Nunes
Metrics
H-Index
i10 Index
Citation Counts
19
21
1,502
Freshwater Biology
Biological Invasions
Evolutionary Ecology
Rankings
Ranking Based On Selection: 8
Oliver Tallowin
Metrics
H-Index
i10 Index
Citation Counts
14
15
1,376
Conservation
Wildlife Trade
Rankings
Ranking Based On Selection: 9
Alain Ndoli
Metrics
H-Index
i10 Index
Citation Counts
13
13
547
Agroforestry
Soil science
General Agronomy
Rankings
Ranking Based On Selection: 10
Randall R. Jiménez
Metrics
H-Index
i10 Index
Citation Counts
12
13
573
Microbial Ecology
Biostatistics
Spatial Ecology
Amphibians
Conservation
Rankings
Ranking Based On Selection: 11
Bruno Leles
Metrics
H-Index
i10 Index
Citation Counts
12
12
479
Rankings
Ranking Based On Selection: 12
Matias Piaggio
Metrics
H-Index
i10 Index
Citation Counts
11
12
577
Rankings
Ranking Based On Selection: 13
Ananda Mallawatantri
Metrics
H-Index
i10 Index
Citation Counts
10
10
620
Environment
Ecosystem based Risk Reduction
Climate Change and Participatory Approaches in Development
Rankings
Ranking Based On Selection: 14
Satrio A Wicaksono
Metrics
H-Index
i10 Index
Citation Counts
8
7
279
forest and land policy
sustainability
climate science
Rankings
Ranking Based On Selection: 15
Aurélie Spadone
Metrics
H-Index
i10 Index
Citation Counts
8
8
280
Rankings
Ranking Based On Selection: 16
Rankings
Ranking Based On Selection: 17
Ken Kassem
Metrics
H-Index
i10 Index
Citation Counts
6
6
317
environment
sustainability
coral reefs
tropical fisheries
climate change
Rankings
Ranking Based On Selection: 18
Peter Hanington
Metrics
H-Index
i10 Index
Citation Counts
5
5
122
Rankings
Ranking Based On Selection: 19
Md Anisur Rahman
Metrics
H-Index
i10 Index
Citation Counts
5
2
75
Rankings
Ranking Based On Selection: 20
Rio Doce Panel
Metrics
H-Index
i10 Index
Citation Counts
2
0
16
impact assessment
ecosystem restoration
nature-based solutions
ecology economy
water management
Rankings
Ranking Based On Selection: 21
Md Mohsin Kabir
Metrics
H-Index
i10 Index
Citation Counts
2
0
8
Raptor Research
Zoonotic Disease
GIS
Rankings
Ranking Based On Selection: 22
Lynn Sorrentino
Metrics
H-Index
i10 Index
Citation Counts
1
1
43
sharks
marine plastic pollution
Rankings
Ranking Based On Selection: 23
Daisy Hessenberger
Metrics
H-Index
i10 Index
Citation Counts
1
0
7
biodiversity
conservation
epigenetics
evolutionary theory