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
Satoshi Nagai
metabarcoding
metagenomics
whole genome analysis
Metrics
H-Index
i10 Index
Citation
40
151
6,368
* Rankings
Ranking Based On Selection: 3
Kensuke Kawamura
Grassland Ecology
Precision Agriculture
Remote Sensing
Metrics
H-Index
i10 Index
Citation
30
62
3,581
* Rankings
Ranking Based On Selection: 5
Rota Wagai
Soil organic matter
Soil science
Biogeochemistry
Ecosystem Ecology
Metrics
H-Index
i10 Index
Citation
29
46
4,873
* Rankings
Ranking Based On Selection: 7
Daisuke Kageyama
evolution
invertebrates
endosymbiosis
sex determination
Wolbachia
Metrics
H-Index
i10 Index
Citation
26
47
2,464
* Rankings
Ranking Based On Selection: 9
Takahiro Kawamura
Knowledge Graph
Knowledge Extraction
Semantic Web
Linked Data
Artificial Intelligence
Metrics
H-Index
i10 Index
Citation
23
42
6,033

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* Rankings
Ranking Based On Selection: 12
佐橋憲生
森林病理学、森林微生物生態学
Metrics
H-Index
i10 Index
Citation
19
25
1,387
* Rankings
Ranking Based On Selection: 13
Koki Maeda
Nitrogen cycling
Microbial Ecology
Stable Isotope Geochemistry
Metrics
H-Index
i10 Index
Citation
18
19
1,432
* Rankings
Ranking Based On Selection: 15
Naoki Katayama
biodiversity conservation
ecology
farmland biodiversity
organic farming
Metrics
H-Index
i10 Index
Citation
16
20
1,238
* Rankings
Ranking Based On Selection: 16
Ryuji Uesugi (上杉龍士)
Applied Entomology
Biological Control
Pesticide Resistance
Population genetics
Conservation
Metrics
H-Index
i10 Index
Citation
16
27
845
* Rankings
Ranking Based On Selection: 18
Toshihisa Yashiro
Evolutionary Ecology
Systematics
Entomology
Social insects
Pest insects
Metrics
H-Index
i10 Index
Citation
14
17
847
* Rankings
Ranking Based On Selection: 29
Masaaki Sato
Marine community ecology
Ecosystem services
Marine larval dispersal
Population genetics
Metrics
H-Index
i10 Index
Citation
8
5
201
* Rankings
Ranking Based On Selection: 34
Takashi Baba
Ericoid mycorhiza
Heterorhizy
Fine roots
Geoglossomycetes
Metrics
H-Index
i10 Index
Citation
7
4
106
* Rankings
Ranking Based On Selection: 35
Tetsuya Akita
evolutionary ecology
population genomics
fisheries management
Metrics
H-Index
i10 Index
Citation
7
6
202
* Rankings
Ranking Based On Selection: 36
Hirotaka Ijima
Ecology
Fishery science
Population dynamics
Statistical modeling
Metrics
H-Index
i10 Index
Citation
7
4
198
* Rankings
Ranking Based On Selection: 40
Stephen Njehia Njane
Big-data for agriculture
Precision Agriculture
AI
Machine Learning
Metrics
H-Index
i10 Index
Citation
5
2
49
* Rankings
Ranking Based On Selection: 45
Kazuki Kanda
Environmental toxicology
Antibiotic resistance
Metrics
H-Index
i10 Index
Citation
3
2
48
* Rankings
Ranking Based On Selection: 46
Daisuke Aoki
Biogeography
Phylogeography
Population genetics
Evolutionary biology
Metrics
H-Index
i10 Index
Citation
3
2
34
* Rankings
Ranking Based On Selection: 47
Ke Zhang
UAV remote sensing
Agriculture
Climate Change
Metrics
H-Index
i10 Index
Citation
3
1
29
Rankings
Ranking Based On Selection: 1
Satoshi Nagai
Metrics
H-Index
i10 Index
Citation Counts
40
151
6,368
metabarcoding
metagenomics
whole genome analysis
Rankings
Ranking Based On Selection: 2
Toshichika Iizumi
Metrics
H-Index
i10 Index
Citation Counts
38
80
6,593
Rankings
Ranking Based On Selection: 3
Kensuke Kawamura
Metrics
H-Index
i10 Index
Citation Counts
30
62
3,581
Grassland Ecology
Precision Agriculture
Remote Sensing
Rankings
Ranking Based On Selection: 4
鈴木チセ
Metrics
H-Index
i10 Index
Citation Counts
30
66
2,769
Rankings
Ranking Based On Selection: 5
Rota Wagai
Metrics
H-Index
i10 Index
Citation Counts
29
46
4,873
Soil organic matter
Soil science
Biogeochemistry
Ecosystem Ecology
Rankings
Ranking Based On Selection: 6
Kajiya-Kanegae Hiromi
Metrics
H-Index
i10 Index
Citation Counts
26
46
5,490
Rankings
Ranking Based On Selection: 7
Daisuke Kageyama
Metrics
H-Index
i10 Index
Citation Counts
26
47
2,464
evolution
invertebrates
endosymbiosis
sex determination
Wolbachia
Rankings
Ranking Based On Selection: 8
Yuji Kominami
Metrics
H-Index
i10 Index
Citation Counts
24
51
2,367
Rankings
Ranking Based On Selection: 9
Takahiro Kawamura
Metrics
H-Index
i10 Index
Citation Counts
23
42
6,033
Knowledge Graph
Knowledge Extraction
Semantic Web
Linked Data
Artificial Intelligence
Rankings
Ranking Based On Selection: 10
Kaeriyama Hideki
Metrics
H-Index
i10 Index
Citation Counts
19
27
1,089

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
Koh Hasegawa
Metrics
H-Index
i10 Index
Citation Counts
19
28
932
Rankings
Ranking Based On Selection: 12
佐橋憲生
Metrics
H-Index
i10 Index
Citation Counts
19
25
1,387
森林病理学、森林微生物生態学
Rankings
Ranking Based On Selection: 13
Koki Maeda
Metrics
H-Index
i10 Index
Citation Counts
18
19
1,432
Nitrogen cycling
Microbial Ecology
Stable Isotope Geochemistry
Rankings
Ranking Based On Selection: 14
Tadashi Sakata
Metrics
H-Index
i10 Index
Citation Counts
18
20
997
Rankings
Ranking Based On Selection: 15
Naoki Katayama
Metrics
H-Index
i10 Index
Citation Counts
16
20
1,238
biodiversity conservation
ecology
farmland biodiversity
organic farming
Rankings
Ranking Based On Selection: 16
Ryuji Uesugi (上杉龍士)
Metrics
H-Index
i10 Index
Citation Counts
16
27
845
Applied Entomology
Biological Control
Pesticide Resistance
Population genetics
Conservation
Rankings
Ranking Based On Selection: 17
Toshiya Matsuura
Metrics
H-Index
i10 Index
Citation Counts
14
18
614
Rankings
Ranking Based On Selection: 18
Toshihisa Yashiro
Metrics
H-Index
i10 Index
Citation Counts
14
17
847
Evolutionary Ecology
Systematics
Entomology
Social insects
Pest insects
Rankings
Ranking Based On Selection: 19
Takako Masuda
Metrics
H-Index
i10 Index
Citation Counts
12
16
374
Rankings
Ranking Based On Selection: 20
Haruka Tsunetaka (經隆 悠)|經隆 悠
Metrics
H-Index
i10 Index
Citation Counts
9
9
308
Rankings
Ranking Based On Selection: 21
Tomohiro Furukawa
Metrics
H-Index
i10 Index
Citation Counts
9
9
246
Rankings
Ranking Based On Selection: 22
Chika Egawa 江川 知花
Metrics
H-Index
i10 Index
Citation Counts
9
6
217
Biodiversity
Biological invasions
Invasive alien species
Weed risk assessment
Rankings
Ranking Based On Selection: 23
Wataru Sakashita
Metrics
H-Index
i10 Index
Citation Counts
8
8
212
Radiocesium
Water stable isotopes
Paleoclimate
Rankings
Ranking Based On Selection: 24
Kazuhiro Kawamura
Metrics
H-Index
i10 Index
Citation Counts
8
7
226
forest management
macroecology
conservation biology
Rankings
Ranking Based On Selection: 25
Nobuhiko Shigyo|執行宣彦
Metrics
H-Index
i10 Index
Citation Counts
8
6
218
Microbial community ecology
Forest ecosystem
Rankings
Ranking Based On Selection: 26
Masahiro Nakamura
Metrics
H-Index
i10 Index
Citation Counts
8
5
155
evolution
ecology
migration
diadromy
pelagic fishes
Rankings
Ranking Based On Selection: 27
Kotaro Akai
Metrics
H-Index
i10 Index
Citation Counts
8
7
175
Rankings
Ranking Based On Selection: 28
Takuya Kobayashi
Metrics
H-Index
i10 Index
Citation Counts
8
6
140
Rankings
Ranking Based On Selection: 29
Masaaki Sato
Metrics
H-Index
i10 Index
Citation Counts
8
5
201
Marine community ecology
Ecosystem services
Marine larval dispersal
Population genetics
Rankings
Ranking Based On Selection: 30
Takahashi Ys
Metrics
H-Index
i10 Index
Citation Counts
8
7
157
Rankings
Ranking Based On Selection: 31
Momi Tsuruta
Metrics
H-Index
i10 Index
Citation Counts
8
5
149
Forest Genetics
Molecular Ecology
Tree Genome
Rankings
Ranking Based On Selection: 32
Saki Fujita
Metrics
H-Index
i10 Index
Citation Counts
7
6
131
Rankings
Ranking Based On Selection: 33
Hideki Mori
Metrics
H-Index
i10 Index
Citation Counts
7
4
145
Rankings
Ranking Based On Selection: 34
Takashi Baba
Metrics
H-Index
i10 Index
Citation Counts
7
4
106
Ericoid mycorhiza
Heterorhizy
Fine roots
Geoglossomycetes
Rankings
Ranking Based On Selection: 35
Tetsuya Akita
Metrics
H-Index
i10 Index
Citation Counts
7
6
202
evolutionary ecology
population genomics
fisheries management
Rankings
Ranking Based On Selection: 36
Hirotaka Ijima
Metrics
H-Index
i10 Index
Citation Counts
7
4
198
Ecology
Fishery science
Population dynamics
Statistical modeling
Rankings
Ranking Based On Selection: 37
Md. Sharif Hossen
Metrics
H-Index
i10 Index
Citation Counts
6
4
184
Rankings
Ranking Based On Selection: 39
Tatsuya Sakamoto
Metrics
H-Index
i10 Index
Citation Counts
5
4
179
Fisheries Oceanography
Isotope Ecology
Sardine
Rankings
Ranking Based On Selection: 40
Stephen Njehia Njane
Metrics
H-Index
i10 Index
Citation Counts
5
2
49
Big-data for agriculture
Precision Agriculture
AI
Machine Learning
Rankings
Ranking Based On Selection: 41
Katsuya Negishi
Metrics
H-Index
i10 Index
Citation Counts
4
3
109
Rankings
Ranking Based On Selection: 42
松村愛美
Metrics
H-Index
i10 Index
Citation Counts
4
3
164
Rankings
Ranking Based On Selection: 44
毛綱昌弘
Metrics
H-Index
i10 Index
Citation Counts
4
1
74
Rankings
Ranking Based On Selection: 45
Kazuki Kanda
Metrics
H-Index
i10 Index
Citation Counts
3
2
48
Environmental toxicology
Antibiotic resistance
Rankings
Ranking Based On Selection: 46
Daisuke Aoki
Metrics
H-Index
i10 Index
Citation Counts
3
2
34
Biogeography
Phylogeography
Population genetics
Evolutionary biology
Rankings
Ranking Based On Selection: 47
Ke Zhang
Metrics
H-Index
i10 Index
Citation Counts
3
1
29
UAV remote sensing
Agriculture
Climate Change
Rankings
Ranking Based On Selection: 48
神宮翔真|Shoma Jingu
Metrics
H-Index
i10 Index
Citation Counts
3
0
27
Rankings
Ranking Based On Selection: 49
Takanori Hayashi
Metrics
H-Index
i10 Index
Citation Counts
3
1
43
Rankings
Ranking Based On Selection: 50
小嶋創|Hajime KOJIMA
Metrics
H-Index
i10 Index
Citation Counts
2
0
16
地域環境工学、地域防災