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 rankings in world, region, country, and university are in Beta version and are subject to real-time updates, since the subject field “Others” (1,121,289 scientists profile whose branch cannot be determined, not yet edited or determined) is excluded. These rankings will dynamically evolve in real time as the “Others” profiles are revised and classified. Please note that. Subjects indicated as “ * others ” will not be included in the ranking by regions and subjects.

* Rankings
Ranking Based On Selection: 1
Guoqing Guan
Biomass
Hydrogen
Energy
Chemical Engineering
Electrochemistr
Metrics
 
H-Index
i10 Index
Citation
81
400
25,751
* Rankings
Ranking Based On Selection: 3
Yukihiro Nojiri
oceanography
biogeochemistry
geochemistry
carbon cycle
climate chang
Metrics
 
H-Index
i10 Index
Citation
60
156
22,484
* Rankings
Ranking Based On Selection: 4
Himeno Hyouta
Molecular Biology
Biochemsitry
Microbiolog
Metrics
 
H-Index
i10 Index
Citation
48
77
5,787
* Rankings
Ranking Based On Selection: 6
Shingo Hatakeyama
Urology
Kidney Transplantation
Oncology
Dialysi
Metrics
 
H-Index
i10 Index
Citation
42
200
7,141
* Rankings
Ranking Based On Selection: 9
Yuji Orihashi
Geology
Geochemistry
Petrology
Geochronolog
Metrics
 
H-Index
i10 Index
Citation
36
102
5,968
* Rankings
Ranking Based On Selection: 13
Masahiro Hosoda
radiation scienc
Metrics
 
H-Index
i10 Index
Citation
30
93
3,403
* Rankings
Ranking Based On Selection: 14
Takuto Maeda
Seismology
Geophysics
Wave Propagation
Tsunam
Metrics
 
H-Index
i10 Index
Citation
30
63
4,923
* Rankings
Ranking Based On Selection: 15
Tomonori Sonoki
Applied Microbiology
Bioresource Technolog
Metrics
 
H-Index
i10 Index
Citation
25
36
3,379
* Rankings
Ranking Based On Selection: 17
Akiyo Yatagai
Climate
Hydrological Cycle
Precipitation
Solar Activit
Metrics
 
H-Index
i10 Index
Citation
24
36
6,248
* Rankings
Ranking Based On Selection: 18
小畠秀和
熱物性、材料科学、宇宙科学、結晶成�
Metrics
 
H-Index
i10 Index
Citation
24
35
1,540
* Rankings
Ranking Based On Selection: 20
Takayuki Hoshino
Bioengineering
Biomedical engineering
Nanotechnology
Tissue engineering
NEM
Metrics
 
H-Index
i10 Index
Citation
23
46
2,049
* Rankings
Ranking Based On Selection: 21
Takafumi Miyanaga
XAFS
Synchrotron Radiation
Nanomaterials
Magnetic
Metrics
 
H-Index
i10 Index
Citation
23
54
1,851
* Rankings
Ranking Based On Selection: 22
Mitsuru Chiba
Exosomes
Extracellular Vesicle
Metrics
 
H-Index
i10 Index
Citation
22
35
3,233
Rankings
Ranking Based On Selection: 1
Guoqing Guan
Metrics
 
H-Index
i10 Index
Citation Counts
81
400
25,751
Biomass
Hydrogen
Energy
Chemical Engineering
Electrochemistr
Rankings
Ranking Based On Selection: 2
Fumiaki Mori
Metrics
 
H-Index
i10 Index
Citation Counts
61
172
11,737
Rankings
Ranking Based On Selection: 3
Yukihiro Nojiri
Metrics
 
H-Index
i10 Index
Citation Counts
60
156
22,484
oceanography
biogeochemistry
geochemistry
carbon cycle
climate chang
Rankings
Ranking Based On Selection: 4
Himeno Hyouta
Metrics
 
H-Index
i10 Index
Citation Counts
48
77
5,787
Rankings
Ranking Based On Selection: 5
Tokonami Shinji
Metrics
 
H-Index
i10 Index
Citation Counts
46
222
8,749
Rankings
Ranking Based On Selection: 6
Shingo Hatakeyama
Metrics
 
H-Index
i10 Index
Citation Counts
42
200
7,141
Urology
Kidney Transplantation
Oncology
Dialysi
Rankings
Ranking Based On Selection: 7
Kazuaki Tanaka
Metrics
 
H-Index
i10 Index
Citation Counts
39
123
17,016
Rankings
Ranking Based On Selection: 8
Kenichi Hakamada
Metrics
 
H-Index
i10 Index
Citation Counts
36
127
4,804
Rankings
Ranking Based On Selection: 9
Yuji Orihashi
Metrics
 
H-Index
i10 Index
Citation Counts
36
102
5,968
Rankings
Ranking Based On Selection: 10
Daisuke Takeuchi
Metrics
 
H-Index
i10 Index
Citation Counts
33
98
4,068
Rankings
Ranking Based On Selection: 11
Masaru Hashimoto
Metrics
 
H-Index
i10 Index
Citation Counts
32
88
4,019
Rankings
Ranking Based On Selection: 12
Hayato Maeda
Metrics
 
H-Index
i10 Index
Citation Counts
30
75
5,663
Rankings
Ranking Based On Selection: 13
Masahiro Hosoda
Metrics
 
H-Index
i10 Index
Citation Counts
30
93
3,403
Rankings
Ranking Based On Selection: 14
Takuto Maeda
Metrics
 
H-Index
i10 Index
Citation Counts
30
63
4,923
Rankings
Ranking Based On Selection: 15
Tomonori Sonoki
Metrics
 
H-Index
i10 Index
Citation Counts
25
36
3,379
Rankings
Ranking Based On Selection: 16
Hideaki Kikuchi
Metrics
 
H-Index
i10 Index
Citation Counts
25
42
2,574
Rankings
Ranking Based On Selection: 17
Akiyo Yatagai
Metrics
 
H-Index
i10 Index
Citation Counts
24
36
6,248
Rankings
Ranking Based On Selection: 18
小畠秀和
Metrics
 
H-Index
i10 Index
Citation Counts
24
35
1,540
Rankings
Ranking Based On Selection: 19
Yoshiharu Enta
Metrics
 
H-Index
i10 Index
Citation Counts
24
42
2,008
Rankings
Ranking Based On Selection: 20
Takayuki Hoshino
Metrics
 
H-Index
i10 Index
Citation Counts
23
46
2,049
Bioengineering
Biomedical engineering
Nanotechnology
Tissue engineering
NEM
Rankings
Ranking Based On Selection: 21
Takafumi Miyanaga
Metrics
 
H-Index
i10 Index
Citation Counts
23
54
1,851
XAFS
Synchrotron Radiation
Nanomaterials
Magnetic
Rankings
Ranking Based On Selection: 22
Mitsuru Chiba
Metrics
 
H-Index
i10 Index
Citation Counts
22
35
3,233
Exosomes
Extracellular Vesicle
Rankings
Ranking Based On Selection: 23
Takuma Kureha
Metrics
 
H-Index
i10 Index
Citation Counts
21
27
891
Rankings
Ranking Based On Selection: 24
Kenji Itaka
Metrics
 
H-Index
i10 Index
Citation Counts
21
36
1,982
Rankings
Ranking Based On Selection: 25
Koji Umeda
Metrics
 
H-Index
i10 Index
Citation Counts
20
36
1,188