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" (873,690 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: 2
Per Juel Hansen
Marine Biology
Protists
Harmful algae
Mixotrophy
Ocean acidification
Metrics
H-Index
i10 Index
Citation
62
143
14,073
* Rankings
Ranking Based On Selection: 3
Katherine Richardson
plankton ecosystems
carbon cycling in the ocean
Earth System science
Metrics
H-Index
i10 Index
Citation
61
141
65,286
* Rankings
Ranking Based On Selection: 5
Nicolaj Krog Larsen
Arctic ice and climate
Greenland Ice Sheet
glacial sedimentology and geomorphology
Metrics
H-Index
i10 Index
Citation
40
82
6,120
* Rankings
Ranking Based On Selection: 7
Morten Tange Olsen
molecular ecology
speciation
marine mammals
pathogens
stressors
Metrics
H-Index
i10 Index
Citation
30
67
2,984
Rankings
Ranking Based On Selection: 1
Tom Fenchel
Metrics
H-Index
i10 Index
Citation Counts
86
202
40,216
Rankings
Ranking Based On Selection: 2
Per Juel Hansen
Metrics
H-Index
i10 Index
Citation Counts
62
143
14,073
Marine Biology
Protists
Harmful algae
Mixotrophy
Ocean acidification
Rankings
Ranking Based On Selection: 3
Katherine Richardson
Metrics
H-Index
i10 Index
Citation Counts
61
141
65,286
plankton ecosystems
carbon cycling in the ocean
Earth System science
Rankings
Ranking Based On Selection: 4
Lasse Riemann
Metrics
H-Index
i10 Index
Citation Counts
56
110
10,181
Rankings
Ranking Based On Selection: 5
Nicolaj Krog Larsen
Metrics
H-Index
i10 Index
Citation Counts
40
82
6,120
Arctic ice and climate
Greenland Ice Sheet
glacial sedimentology and geomorphology
Rankings
Ranking Based On Selection: 6
Troels Aagaard
Metrics
H-Index
i10 Index
Citation Counts
37
72
4,513
Rankings
Ranking Based On Selection: 7
Morten Tange Olsen
Metrics
H-Index
i10 Index
Citation Counts
30
67
2,984
molecular ecology
speciation
marine mammals
pathogens
stressors
Rankings
Ranking Based On Selection: 8
Bent Vismann
Metrics
H-Index
i10 Index
Citation Counts
24
39
1,743
Rankings
Ranking Based On Selection: 9
Anna Junker Olesen
Metrics
H-Index
i10 Index
Citation Counts
3
3
52
Marine biology
algae
toxic algae
marine microbiology
phycology
Rankings
Ranking Based On Selection: 10
Jonas Blüthgen
Metrics
H-Index
i10 Index
Citation Counts
2
1
62