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" (901,365 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
Tohru Nakashizuka
forest ecology
forest management
forest dynamics
climate change
biodiversity
Metrics
H-Index
i10 Index
Citation
60
169
17,848
* Rankings
Ranking Based On Selection :4
Matthias Wissuwa
Plant Breeding
Physiology
Genetics
Abiotic Stress Tolerance
Nutrient Efficiency
Metrics
H-Index
i10 Index
Citation
51
98
10,466
* Rankings
Ranking Based On Selection :10
Ronald C Estoque
Forestry
Land Change Science
CC Mitigation/Adaptation
GIS/Remote Sensing
Sustainability Science
Metrics
H-Index
i10 Index
Citation
37
59
5,896
* Rankings
Ranking Based On Selection :11
Kenji Saitoh
ichthyology
fisheries
molecular phylogeny
aquatic biology
freshwater fish
Metrics
H-Index
i10 Index
Citation
36
68
5,956
* Rankings
Ranking Based On Selection :17
Shoichiro Yamamoto
salmonids
population genetics
fisheries
conservation biology
conservation genetics
Metrics
H-Index
i10 Index
Citation
28
62
3,311
* Rankings
Ranking Based On Selection :24
Hideki Takami
Fisheries
Marine biology
Larval ecology
Benthic invertebrates
Metrics
H-Index
i10 Index
Citation
26
43
1,918
* Rankings
Ranking Based On Selection :29
Kotaro Konno
Plant-Insect Interactions
Chemical Ecology
Ecology
Plant defense
Food web model
Metrics
H-Index
i10 Index
Citation
23
29
3,157
* Rankings
Ranking Based On Selection :30
Kazumichi Fujii
Soil acidification
Dissolved organic matter
Tropical forest
Metrics
H-Index
i10 Index
Citation
23
38
1,796
* Rankings
Ranking Based On Selection :40
Ryogo Nakada
heartwood formation
wetwood
wood anatomy
wood quality
Metrics
H-Index
i10 Index
Citation
21
35
1,426
* Rankings
Ranking Based On Selection :43
Aung Zaw Oo
Greenhouse gas
crop management
Environment
climate change
Plant nutrition
Metrics
H-Index
i10 Index
Citation
20
32
1,108
* Rankings
Ranking Based On Selection :44
Qing-Wei Wang
Forest ecology
solar radiation
UV-B stress
plant ecophysiology
Metrics
H-Index
i10 Index
Citation
20
30
1,330
* Rankings
Ranking Based On Selection :46
入路光雄
reproductive physiology on fish
endocrinology
reproductive biology of fish
aquaculture
Metrics
H-Index
i10 Index
Citation
21
27
962
* Rankings
Ranking Based On Selection :48
Tamotsu Sato
Forest Ecology
Carbon Dynamics in Forest Ecosystem
Silviculture
Metrics
H-Index
i10 Index
Citation
20
34
1,204
* Rankings
Ranking Based On Selection :50
Yoshiaki Ueda
Plant nutrition
Transcription factor
Iron toxicity
Rice
Genomics
Metrics
H-Index
i10 Index
Citation
19
24
1,355
* Rankings
Ranking Based On Selection :53
Akira Kawaguchi
Plant Pathology
Plant Protection
Epidemiology
Soil Microbiology
Bacteriology
Metrics
H-Index
i10 Index
Citation
19
27
1,020
* Rankings
Ranking Based On Selection :63
Junichi Okuyama
Biologging
sea turtle
grouper
behavioral ecology
diving physiology
Metrics
H-Index
i10 Index
Citation
17
23
797
* Rankings
Ranking Based On Selection :69
Yosuke, Yanai
seasonally frozen soil
overwintering
vegetable
irrigation
Metrics
H-Index
i10 Index
Citation
16
19
1,938
* Rankings
Ranking Based On Selection :77
Md Zohurul Kadir Roni
Plant Physiology
Greenhouse Horticulture
Controlled Environment Agriculture
Crop Growth Model
Metrics
H-Index
i10 Index
Citation
15
20
541
* Rankings
Ranking Based On Selection :81
Kohtaro Iseki
Crop wild relatives
Abiotic stress tolerance
Biodiversity
High-throughput phenotyping
Genotype-environmental Interaction
Metrics
H-Index
i10 Index
Citation
14
20
782
* Rankings
Ranking Based On Selection :82
Akihiko Kinoshita
ectomycorrhizal fungi
truffle
orchid
mycoheterotrophy
biogeography
Metrics
H-Index
i10 Index
Citation
14
18
942
* Rankings
Ranking Based On Selection :85
Nobuko Katayanagi
Agriculture
Environment
Nutrient Cycling
Sustainability
Land use change
Metrics
H-Index
i10 Index
Citation
14
14
931
* Rankings
Ranking Based On Selection :87
Michinari Matsushita
Forest Ecology
Ecological Modeling
Tree Breeding
Tree Growth
Plant Reproduction
Metrics
H-Index
i10 Index
Citation
13
21
850
* Rankings
Ranking Based On Selection :88
Masako Kajiura
soil organic matter
black carbon
CH4 emission from rice paddy
soil water repellency
Metrics
H-Index
i10 Index
Citation
13
13
577
* Rankings
Ranking Based On Selection :91
Wenchao Wu
Agricultural economics
industrial location
impact and mitigation of climate change
global land use
Metrics
H-Index
i10 Index
Citation
12
12
1,438
* Rankings
Ranking Based On Selection :93
Azusa Oita
nitrogen footprint
nutrient management
sustainable consumption
Metrics
H-Index
i10 Index
Citation
11
12
868
Rankings
Ranking Based On Selection: 1
Tohru Nakashizuka
Metrics
H-Index
i10 Index
Citation Counts
60
169
17,848
forest ecology
forest management
forest dynamics
climate change
biodiversity
Rankings
Ranking Based On Selection: 2
Akio Miyao
Metrics
H-Index
i10 Index
Citation Counts
59
97
18,135
Rankings
Ranking Based On Selection: 3
Toshihiro Hasegawa
Metrics
H-Index
i10 Index
Citation Counts
56
168
13,814
Climate Change
Rice
Free-air CO2 enrichment
crop model
Rankings
Ranking Based On Selection: 4
Matthias Wissuwa
Metrics
H-Index
i10 Index
Citation Counts
51
98
10,466
Plant Breeding
Physiology
Genetics
Abiotic Stress Tolerance
Nutrient Efficiency
Rankings
Ranking Based On Selection: 5
Nakashima Kazuo
Metrics
H-Index
i10 Index
Citation Counts
50
81
21,113
Rankings
Ranking Based On Selection: 6
Seinen Chow
Metrics
H-Index
i10 Index
Citation Counts
40
99
5,501
Rankings
Ranking Based On Selection: 8
Chang-Jie Jiang
Metrics
H-Index
i10 Index
Citation Counts
37
58
5,470
Rankings
Ranking Based On Selection: 10
Ronald C Estoque
Metrics
H-Index
i10 Index
Citation Counts
37
59
5,896
Forestry
Land Change Science
CC Mitigation/Adaptation
GIS/Remote Sensing
Sustainability Science
Rankings
Ranking Based On Selection: 11
Kenji Saitoh
Metrics
H-Index
i10 Index
Citation Counts
36
68
5,956
ichthyology
fisheries
molecular phylogeny
aquatic biology
freshwater fish
Rankings
Ranking Based On Selection: 13
Tanaka Kenzo
Metrics
H-Index
i10 Index
Citation Counts
33
53
4,459
Rankings
Ranking Based On Selection: 14
Junichi Yonemaru
Metrics
H-Index
i10 Index
Citation Counts
32
50
3,476
Rankings
Ranking Based On Selection: 15
Seiji Ohshimo
Metrics
H-Index
i10 Index
Citation Counts
31
75
2,720
Rankings
Ranking Based On Selection: 16
Taiji Kawakatsu
Metrics
H-Index
i10 Index
Citation Counts
29
37
3,704
Plant biology
Epigenetics
Plant Biotechnology
Rankings
Ranking Based On Selection: 17
Shoichiro Yamamoto
Metrics
H-Index
i10 Index
Citation Counts
28
62
3,311
salmonids
population genetics
fisheries
conservation biology
conservation genetics
Rankings
Ranking Based On Selection: 18
Shoji Hashimoto
Metrics
H-Index
i10 Index
Citation Counts
27
51
2,580
Rankings
Ranking Based On Selection: 20
Naoki Yamanaka
Metrics
H-Index
i10 Index
Citation Counts
27
44
3,285
Plant genetics
Plant breeding
Plant pathology
Rankings
Ranking Based On Selection: 21
Tomohiro Kakizaki
Metrics
H-Index
i10 Index
Citation Counts
27
34
2,672
Rankings
Ranking Based On Selection: 22
Takuya Akiyama
Metrics
H-Index
i10 Index
Citation Counts
26
42
3,272
Rankings
Ranking Based On Selection: 23
Hiroshi Okamura
Metrics
H-Index
i10 Index
Citation Counts
26
59
2,160
Rankings
Ranking Based On Selection: 24
Hideki Takami
Metrics
H-Index
i10 Index
Citation Counts
26
43
1,918
Fisheries
Marine biology
Larval ecology
Benthic invertebrates
Rankings
Ranking Based On Selection: 25
Kyotaro Noguchi
Metrics
H-Index
i10 Index
Citation Counts
24
38
2,952
Rankings
Ranking Based On Selection: 26
Tokuko Ujino-Ihara
Metrics
H-Index
i10 Index
Citation Counts
24
35
2,019
forest genetics
genomics
local adaptation
Rankings
Ranking Based On Selection: 27
Takao Ito
Metrics
H-Index
i10 Index
Citation Counts
24
50
3,858
Rankings
Ranking Based On Selection: 28
Kazuharu Nomura
Metrics
H-Index
i10 Index
Citation Counts
23
43
2,270
Japanese eel
selective breeding
genomic selection
Rankings
Ranking Based On Selection: 29
Kotaro Konno
Metrics
H-Index
i10 Index
Citation Counts
23
29
3,157
Plant-Insect Interactions
Chemical Ecology
Ecology
Plant defense
Food web model
Rankings
Ranking Based On Selection: 30
Kazumichi Fujii
Metrics
H-Index
i10 Index
Citation Counts
23
38
1,796
Soil acidification
Dissolved organic matter
Tropical forest
Rankings
Ranking Based On Selection: 31
Yoshiyuki Inagaki
Metrics
H-Index
i10 Index
Citation Counts
22
44
1,751
Rankings
Ranking Based On Selection: 32
Satoru Miura
Metrics
H-Index
i10 Index
Citation Counts
22
36
1,706
Forest
Soil
Conservation
Radioecology
Carbon
Rankings
Ranking Based On Selection: 33
Masaaki Taniguchi
Metrics
H-Index
i10 Index
Citation Counts
22
33
3,800
molecular genetics
livestock production
meat quality
Rankings
Ranking Based On Selection: 34
Kouki Fujioka
Metrics
H-Index
i10 Index
Citation Counts
22
41
4,218
Rankings
Ranking Based On Selection: 35
Akira Otuka
Metrics
H-Index
i10 Index
Citation Counts
22
37
1,900
Rankings
Ranking Based On Selection: 37
Koji Tamai
Metrics
H-Index
i10 Index
Citation Counts
22
38
1,388
Rankings
Ranking Based On Selection: 38
Hajime Utsugi
Metrics
H-Index
i10 Index
Citation Counts
22
41
1,701
Rankings
Ranking Based On Selection: 40
Ryogo Nakada
Metrics
H-Index
i10 Index
Citation Counts
21
35
1,426
heartwood formation
wetwood
wood anatomy
wood quality
Rankings
Ranking Based On Selection: 41
Takeshi Toma
Metrics
H-Index
i10 Index
Citation Counts
21
31
1,684
Rankings
Ranking Based On Selection: 42
Taiki Mori
Metrics
H-Index
i10 Index
Citation Counts
21
42
2,102
Rankings
Ranking Based On Selection: 43
Aung Zaw Oo
Metrics
H-Index
i10 Index
Citation Counts
20
32
1,108
Greenhouse gas
crop management
Environment
climate change
Plant nutrition
Rankings
Ranking Based On Selection: 44
Qing-Wei Wang
Metrics
H-Index
i10 Index
Citation Counts
20
30
1,330
Forest ecology
solar radiation
UV-B stress
plant ecophysiology
Rankings
Ranking Based On Selection: 45
Keizo Hirai
Metrics
H-Index
i10 Index
Citation Counts
20
40
1,706
Rankings
Ranking Based On Selection: 46
入路光雄
Metrics
H-Index
i10 Index
Citation Counts
21
27
962
reproductive physiology on fish
endocrinology
reproductive biology of fish
aquaculture
Rankings
Ranking Based On Selection: 47
Tamaki Shimose
Metrics
H-Index
i10 Index
Citation Counts
20
29
1,044
Ichthyology
Fish Biology
Fisheries Biology
Rankings
Ranking Based On Selection: 48
Tamotsu Sato
Metrics
H-Index
i10 Index
Citation Counts
20
34
1,204
Forest Ecology
Carbon Dynamics in Forest Ecosystem
Silviculture
Rankings
Ranking Based On Selection: 49
Kazuki Yokouchi
Metrics
H-Index
i10 Index
Citation Counts
19
27
1,143
Rankings
Ranking Based On Selection: 50
Yoshiaki Ueda
Metrics
H-Index
i10 Index
Citation Counts
19
24
1,355
Plant nutrition
Transcription factor
Iron toxicity
Rice
Genomics
Rankings
Ranking Based On Selection: 51
Akifumi Azuma
Metrics
H-Index
i10 Index
Citation Counts
19
26
2,045
flavonoids
anthocyanin
MYB
grapevine
molecular breeding
Rankings
Ranking Based On Selection: 52
Etsushi Kumagai
Metrics
H-Index
i10 Index
Citation Counts
19
27
1,124
Agricultural Meteorology
Crop Science
Plant Biology
Rankings
Ranking Based On Selection: 53
Akira Kawaguchi
Metrics
H-Index
i10 Index
Citation Counts
19
27
1,020
Plant Pathology
Plant Protection
Epidemiology
Soil Microbiology
Bacteriology
Rankings
Ranking Based On Selection: 55
Yutaka Kataoka
Metrics
H-Index
i10 Index
Citation Counts
19
28
1,773
Rankings
Ranking Based On Selection: 56
Ryoichi Yano
Metrics
H-Index
i10 Index
Citation Counts
18
21
2,116
Bioinformatics
Genomics
Genetics
Plant physiology
Rankings
Ranking Based On Selection: 57
Junco Nagata
Metrics
H-Index
i10 Index
Citation Counts
18
24
1,402
population genetics
wildlife biology
conservation
Rankings
Ranking Based On Selection: 58
Tokihiro Fukatsu
Metrics
H-Index
i10 Index
Citation Counts
18
29
1,335
Rankings
Ranking Based On Selection: 60
Hidetoshi Asai
Metrics
H-Index
i10 Index
Citation Counts
17
26
2,616
Rankings
Ranking Based On Selection: 61
Hiroshige Tanaka
Metrics
H-Index
i10 Index
Citation Counts
17
23
899
Rankings
Ranking Based On Selection: 62
Naoki Takata
Metrics
H-Index
i10 Index
Citation Counts
17
21
906
Tree Physiology
Plant Physiology
Evolutionary Biology
Rankings
Ranking Based On Selection: 63
Junichi Okuyama
Metrics
H-Index
i10 Index
Citation Counts
17
23
797
Biologging
sea turtle
grouper
behavioral ecology
diving physiology
Rankings
Ranking Based On Selection: 64
Chinatsu Kozakai
Metrics
H-Index
i10 Index
Citation Counts
17
22
933
Rankings
Ranking Based On Selection: 65
Jun-İchi Tsuboi
Metrics
H-Index
i10 Index
Citation Counts
17
24
1,000
Rankings
Ranking Based On Selection: 67
Shigenori Ueda
Metrics
H-Index
i10 Index
Citation Counts
17
25
2,687
Rankings
Ranking Based On Selection: 68
Wonsik Kim
Metrics
H-Index
i10 Index
Citation Counts
17
25
1,269
Rankings
Ranking Based On Selection: 69
Yosuke, Yanai
Metrics
H-Index
i10 Index
Citation Counts
16
19
1,938
seasonally frozen soil
overwintering
vegetable
irrigation
Rankings
Ranking Based On Selection: 70
Reiji Yoneda
Metrics
H-Index
i10 Index
Citation Counts
16
18
864
Rankings
Ranking Based On Selection: 73
Keisuke Satoh
Metrics
H-Index
i10 Index
Citation Counts
16
23
1,052
Rankings
Ranking Based On Selection: 74
Hiroki Itô
Metrics
H-Index
i10 Index
Citation Counts
16
20
1,384
Rankings
Ranking Based On Selection: 75
Tomohiro Nishigaki
Metrics
H-Index
i10 Index
Citation Counts
15
21
616
Rankings
Ranking Based On Selection: 76
Momoko Ichinokawa
Metrics
H-Index
i10 Index
Citation Counts
15
18
641
Rankings
Ranking Based On Selection: 77
Md Zohurul Kadir Roni
Metrics
H-Index
i10 Index
Citation Counts
15
20
541
Plant Physiology
Greenhouse Horticulture
Controlled Environment Agriculture
Crop Growth Model
Rankings
Ranking Based On Selection: 78
Tomoki Oda
Metrics
H-Index
i10 Index
Citation Counts
15
19
780
Rankings
Ranking Based On Selection: 80
Shoji Naoe
Metrics
H-Index
i10 Index
Citation Counts
15
17
1,119
Rankings
Ranking Based On Selection: 81
Kohtaro Iseki
Metrics
H-Index
i10 Index
Citation Counts
14
20
782
Crop wild relatives
Abiotic stress tolerance
Biodiversity
High-throughput phenotyping
Genotype-environmental Interaction
Rankings
Ranking Based On Selection: 82
Akihiko Kinoshita
Metrics
H-Index
i10 Index
Citation Counts
14
18
942
ectomycorrhizal fungi
truffle
orchid
mycoheterotrophy
biogeography
Rankings
Ranking Based On Selection: 83
Atsushi Maruyama
Metrics
H-Index
i10 Index
Citation Counts
14
18
847
Climate Change
Rice
Evapotranspiration
Micrometeorology
Rankings
Ranking Based On Selection: 85
Nobuko Katayanagi
Metrics
H-Index
i10 Index
Citation Counts
14
14
931
Agriculture
Environment
Nutrient Cycling
Sustainability
Land use change
Rankings
Ranking Based On Selection: 86
Nobuto Fukuda
Metrics
H-Index
i10 Index
Citation Counts
13
14
612
Rankings
Ranking Based On Selection: 87
Michinari Matsushita
Metrics
H-Index
i10 Index
Citation Counts
13
21
850
Forest Ecology
Ecological Modeling
Tree Breeding
Tree Growth
Plant Reproduction
Rankings
Ranking Based On Selection: 88
Masako Kajiura
Metrics
H-Index
i10 Index
Citation Counts
13
13
577
soil organic matter
black carbon
CH4 emission from rice paddy
soil water repellency
Rankings
Ranking Based On Selection: 89
Yoshitsugu Masuda
Metrics
H-Index
i10 Index
Citation Counts
13
16
542
Rankings
Ranking Based On Selection: 91
Wenchao Wu
Metrics
H-Index
i10 Index
Citation Counts
12
12
1,438
Agricultural economics
industrial location
impact and mitigation of climate change
global land use
Rankings
Ranking Based On Selection: 92
Shinji Sawano
Metrics
H-Index
i10 Index
Citation Counts
12
13
567
Rankings
Ranking Based On Selection: 93
Azusa Oita
Metrics
H-Index
i10 Index
Citation Counts
11
12
868
nitrogen footprint
nutrient management
sustainable consumption
Rankings
Ranking Based On Selection: 95
Hiroki Wakamatsu
Metrics
H-Index
i10 Index
Citation Counts
11
12
645
Rankings
Ranking Based On Selection: 96
Shota Teramoto
Metrics
H-Index
i10 Index
Citation Counts
11
11
344
Rankings
Ranking Based On Selection: 97
Saitoh Tomoyuki
Metrics
H-Index
i10 Index
Citation Counts
11
11
709
Rankings
Ranking Based On Selection: 98
Eiji Domon
Metrics
H-Index
i10 Index
Citation Counts
10
10
424
Rankings
Ranking Based On Selection: 99
Kei Tanaka
Metrics
H-Index
i10 Index
Citation Counts
10
11
372
Rankings
Ranking Based On Selection: 100
Ching-Chia Yang
Metrics
H-Index
i10 Index
Citation Counts
9
8
1,217
genomics
bioinformatics
evolutionary biology