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: 3
Norio Ohmagari
Infectious Diseases
Infection Prevention and control
and Emerging Infectious Diseases
Metrics
H-Index
i10 Index
Citation
57
264
28,011
* Rankings
Ranking Based On Selection: 4
Takuya Awata
Pancreas/Islet Transplantation
Prevention of Type 1 Diabetes
Metrics
H-Index
i10 Index
Citation
55
110
11,232

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
Yosuke Inoue
Human Biology
Social Epidemiology
Metrics
H-Index
i10 Index
Citation
20
43
1,561
* Rankings
Ranking Based On Selection: 12
Mugen Ujiie
immunization
travel medicine
tropical medicine
Metrics
H-Index
i10 Index
Citation
20
36
1,847
* Rankings
Ranking Based On Selection: 15
Mari Tenno
免疫細胞分化、疾患発症
Metrics
H-Index
i10 Index
Citation
15
17
945
* Rankings
Ranking Based On Selection: 16
Motoyuki Tsuboi 坪井基行
Emerging Infectious disease
sexually transmitted infections
tropical/travel medicine
Metrics
H-Index
i10 Index
Citation
14
17
554
* Rankings
Ranking Based On Selection: 22
Mayumi Okamoto
ケミカルバイオロジー PET化学 免疫
Metrics
H-Index
i10 Index
Citation
8
8
739
* Rankings
Ranking Based On Selection: 24
Yunfei Li
Clinical Epidemiology
Health Economics
Health Intervention
Gerontology
Metrics
H-Index
i10 Index
Citation
6
3
81
Rankings
Ranking Based On Selection: 1
Takao Shimizu
Metrics
H-Index
i10 Index
Citation Counts
126
587
66,242
Rankings
Ranking Based On Selection: 2
Tatsuya Kanto
Metrics
H-Index
i10 Index
Citation Counts
58
173
11,419
Rankings
Ranking Based On Selection: 3
Norio Ohmagari
Metrics
H-Index
i10 Index
Citation Counts
57
264
28,011
Infectious Diseases
Infection Prevention and control
and Emerging Infectious Diseases
Rankings
Ranking Based On Selection: 4
Takuya Awata
Metrics
H-Index
i10 Index
Citation Counts
55
110
11,232
Pancreas/Islet Transplantation
Prevention of Type 1 Diabetes
Rankings
Ranking Based On Selection: 5
Masaya Sugiyama
Metrics
H-Index
i10 Index
Citation Counts
48
129
10,061
Rankings
Ranking Based On Selection: 6
Keiyo Takubo
Metrics
H-Index
i10 Index
Citation Counts
47
95
16,329
Rankings
Ranking Based On Selection: 7
Eiko Saito
Metrics
H-Index
i10 Index
Citation Counts
30
61
4,099
Health Economics
Epidemiology
Global Health
Rankings
Ranking Based On Selection: 8
Masayuki Shimoda
Metrics
H-Index
i10 Index
Citation Counts
29
66
2,465
Rankings
Ranking Based On Selection: 10
Toshi Kobayashi
Metrics
H-Index
i10 Index
Citation Counts
21
35
3,663

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
Yosuke Inoue
Metrics
H-Index
i10 Index
Citation Counts
20
43
1,561
Human Biology
Social Epidemiology
Rankings
Ranking Based On Selection: 12
Mugen Ujiie
Metrics
H-Index
i10 Index
Citation Counts
20
36
1,847
immunization
travel medicine
tropical medicine
Rankings
Ranking Based On Selection: 13
Masatoshi Hotta
Metrics
H-Index
i10 Index
Citation Counts
17
23
827
Rankings
Ranking Based On Selection: 14
Takamatsu Yuki
Metrics
H-Index
i10 Index
Citation Counts
15
18
802
Rankings
Ranking Based On Selection: 15
Mari Tenno
Metrics
H-Index
i10 Index
Citation Counts
15
17
945
免疫細胞分化、疾患発症
Rankings
Ranking Based On Selection: 16
Motoyuki Tsuboi 坪井基行
Metrics
H-Index
i10 Index
Citation Counts
14
17
554
Emerging Infectious disease
sexually transmitted infections
tropical/travel medicine
Rankings
Ranking Based On Selection: 17
Yoshiki Kusama
Metrics
H-Index
i10 Index
Citation Counts
13
20
519
Rankings
Ranking Based On Selection: 18
Kozo Miyazaki
Metrics
H-Index
i10 Index
Citation Counts
13
15
1,013
Rankings
Ranking Based On Selection: 19
Dong Vh
Metrics
H-Index
i10 Index
Citation Counts
12
14
650
Rankings
Ranking Based On Selection: 20
Alafate Ayibieke
Metrics
H-Index
i10 Index
Citation Counts
10
10
231
Rankings
Ranking Based On Selection: 21
Gen Yamada
Metrics
H-Index
i10 Index
Citation Counts
9
8
183
Rankings
Ranking Based On Selection: 22
Mayumi Okamoto
Metrics
H-Index
i10 Index
Citation Counts
8
8
739
ケミカルバイオロジー PET化学 免疫
Rankings
Ranking Based On Selection: 23
Yutaka Handa
Metrics
H-Index
i10 Index
Citation Counts
8
8
830
Rankings
Ranking Based On Selection: 24
Yunfei Li
Metrics
H-Index
i10 Index
Citation Counts
6
3
81
Clinical Epidemiology
Health Economics
Health Intervention
Gerontology
Rankings
Ranking Based On Selection: 25
Saeideh Ashouri
Metrics
H-Index
i10 Index
Citation Counts
5
3
116
Rankings
Ranking Based On Selection: 26
Motoyoshi Nagai
Metrics
H-Index
i10 Index
Citation Counts
4
3
272
immunometabolism
mucosal immunology
Rankings
Ranking Based On Selection: 27
Masaki Uchihara
Metrics
H-Index
i10 Index
Citation Counts
3
2
35
Rankings
Ranking Based On Selection: 28
Takashi Ohfuji
Metrics
H-Index
i10 Index
Citation Counts
3
0
15
Rankings
Ranking Based On Selection: 29
Teramura Atsumu
Metrics
H-Index
i10 Index
Citation Counts
1
0
4