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" (870,053 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
Ikuo Hirono
fish and shellfish immunology
fish and shellfish genomics
fish and shellfish infectious diseases
Metrics
H-Index
i10 Index
Citation
79
341
20,534
* Rankings
Ranking Based On Selection: 4
Hiroaki Saito
marine ecosystem
biogeochemistry
plankton
ecosystem services
fisheries oceanography
Metrics
H-Index
i10 Index
Citation
44
108
7,293
* Rankings
Ranking Based On Selection: 5
Shigeru Okada
fisheries science
algae
biochemistry
isoprenoid
natural products chemistry
Metrics
H-Index
i10 Index
Citation
42
103
4,933
* Rankings
Ranking Based On Selection: 6
Tadashi Tokai
Fisheries science
Fishing gear technology
Fisheries management
Fisheries Biology
Metrics
H-Index
i10 Index
Citation
35
82
4,857
* Rankings
Ranking Based On Selection: 8
Shigeharu Kinoshita
Fish
Growth
Aging
Indeterminate Growth
Metrics
H-Index
i10 Index
Citation
28
76
3,188
* Rankings
Ranking Based On Selection: 9
Mari Kuroki
Marine Ecology
Migration
Diadromous fish
Metrics
H-Index
i10 Index
Citation
25
46
2,117

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* Rankings
Ranking Based On Selection: 11
Mehedi Iqbal
Marine microbiology
Metagenomics
Molecular biology
Marina ecology
Metrics
H-Index
i10 Index
Citation
17
32
974
* Rankings
Ranking Based On Selection: 12
Leila Basti
Marine Science
Marine Environment
Harmful Algal Blooms
Ecotoxicology
Aquaculture
Metrics
H-Index
i10 Index
Citation
16
22
672
* Rankings
Ranking Based On Selection: 14
Yanhui Yang
marine viruses
microbial food web
marine biogeochemical cycles
community ecology
theoretical ecology
Metrics
H-Index
i10 Index
Citation
11
12
593
Yutaro Sakai
Fisheries Economics
Environmental and Resource Economics
Metrics
H-Index
i10 Index
Citation
9
9
258
Yusuke Kumai
Conservation ecology
Fisheries ecology
Anguillid eels
Migration
Metrics
H-Index
i10 Index
Citation
4
2
51
Rankings
Ranking Based On Selection: 1
Ikuo Hirono
Metrics
H-Index
i10 Index
Citation Counts
79
341
20,534
fish and shellfish immunology
fish and shellfish genomics
fish and shellfish infectious diseases
Rankings
Ranking Based On Selection: 2
Shigeki Matsunaga
Metrics
H-Index
i10 Index
Citation Counts
74
258
19,592
Rankings
Ranking Based On Selection: 3
Bon Kimura
Metrics
H-Index
i10 Index
Citation Counts
46
150
6,670
Rankings
Ranking Based On Selection: 4
Hiroaki Saito
Metrics
H-Index
i10 Index
Citation Counts
44
108
7,293
marine ecosystem
biogeochemistry
plankton
ecosystem services
fisheries oceanography
Rankings
Ranking Based On Selection: 5
Shigeru Okada
Metrics
H-Index
i10 Index
Citation Counts
42
103
4,933
fisheries science
algae
biochemistry
isoprenoid
natural products chemistry
Rankings
Ranking Based On Selection: 6
Tadashi Tokai
Metrics
H-Index
i10 Index
Citation Counts
35
82
4,857
Fisheries science
Fishing gear technology
Fisheries management
Fisheries Biology
Rankings
Ranking Based On Selection: 7
Shin Ichi Ito
Metrics
H-Index
i10 Index
Citation Counts
31
60
3,085
Rankings
Ranking Based On Selection: 8
Shigeharu Kinoshita
Metrics
H-Index
i10 Index
Citation Counts
28
76
3,188
Rankings
Ranking Based On Selection: 9
Mari Kuroki
Metrics
H-Index
i10 Index
Citation Counts
25
46
2,117
Rankings
Ranking Based On Selection: 10
Makino Mitsutaku 牧野光琢
Metrics
H-Index
i10 Index
Citation Counts
18
30
1,847

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Rankings
Ranking Based On Selection: 11
Mehedi Iqbal
Metrics
H-Index
i10 Index
Citation Counts
17
32
974
Marine microbiology
Metagenomics
Molecular biology
Marina ecology
Rankings
Ranking Based On Selection: 12
Leila Basti
Metrics
H-Index
i10 Index
Citation Counts
16
22
672
Marine Science
Marine Environment
Harmful Algal Blooms
Ecotoxicology
Aquaculture
Rankings
Ranking Based On Selection: 13
Yoko Iwata
Metrics
H-Index
i10 Index
Citation Counts
12
19
555
Rankings
Ranking Based On Selection: 14
Yanhui Yang
Metrics
H-Index
i10 Index
Citation Counts
11
12
593
marine viruses
microbial food web
marine biogeochemical cycles
community ecology
theoretical ecology
Rankings
Ranking Based On Selection: 15
Yutaro Sakai
Metrics
H-Index
i10 Index
Citation Counts
9
9
258
Fisheries Economics
Environmental and Resource Economics
Rankings
Ranking Based On Selection: 16
Yusuke Kumai
Metrics
H-Index
i10 Index
Citation Counts
4
2
51
Conservation ecology
Fisheries ecology
Anguillid eels
Migration
Rankings
Ranking Based On Selection: 17
Burak Saygili
Metrics
H-Index
i10 Index
Citation Counts
2
1
23