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: 1
Robert Mason
marine chemistry
oceanography
mercury and other metals
water
atmosphere
Metrics
H-Index
i10 Index
Citation
92
209
32,809
* Rankings
Ranking Based On Selection: 2
William F Fitzgerald
Mercury cycling in terrestrial and marine aquatic ecosystems.
Metrics
H-Index
i10 Index
Citation
73
115
21,027
* Rankings
Ranking Based On Selection: 3
Pieter T Visscher
geomicrobiology
biogeochemistry
geobiochemistry
element cycling
microbial ecophysiology
Metrics
H-Index
i10 Index
Citation
64
127
16,424
* Rankings
Ranking Based On Selection: 6
Hans Dam
Marine evolutionary ecology
zooplankton
plankton
biological oceanography
harmful algal blooms
Metrics
H-Index
i10 Index
Citation
52
99
8,902
* Rankings
Ranking Based On Selection: 7
J Evan Ward
marine biology
suspension feeding
bivalves
nanoparticles
microplastics
Metrics
H-Index
i10 Index
Citation
48
80
7,876
* Rankings
Ranking Based On Selection: 8
Ann Bucklin
Molecular ecology and biodiversity of marine zooplankton
Metrics
H-Index
i10 Index
Citation
47
94
6,558

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* Rankings
Ranking Based On Selection: 13
Ed Monahan
air-sea interaction
physical oceanography
marine meteorology
Metrics
H-Index
i10 Index
Citation
33
64
5,920
* Rankings
Ranking Based On Selection: 17
Zofia Baumann
marine ecology
biogeochemistry
chemical pollution
conservation & restoration
Metrics
H-Index
i10 Index
Citation
20
25
1,671
Rankings
Ranking Based On Selection: 1
Robert Mason
Metrics
H-Index
i10 Index
Citation Counts
92
209
32,809
marine chemistry
oceanography
mercury and other metals
water
atmosphere
Rankings
Ranking Based On Selection: 2
William F Fitzgerald
Metrics
H-Index
i10 Index
Citation Counts
73
115
21,027
Mercury cycling in terrestrial and marine aquatic ecosystems.
Rankings
Ranking Based On Selection: 3
Pieter T Visscher
Metrics
H-Index
i10 Index
Citation Counts
64
127
16,424
geomicrobiology
biogeochemistry
geobiochemistry
element cycling
microbial ecophysiology
Rankings
Ranking Based On Selection: 4
Huan Zhang
Metrics
H-Index
i10 Index
Citation Counts
61
270
14,674
Rankings
Ranking Based On Selection: 5
Robert Whitlatch
Metrics
H-Index
i10 Index
Citation Counts
56
98
10,872
Rankings
Ranking Based On Selection: 6
Hans Dam
Metrics
H-Index
i10 Index
Citation Counts
52
99
8,902
Marine evolutionary ecology
zooplankton
plankton
biological oceanography
harmful algal blooms
Rankings
Ranking Based On Selection: 7
J Evan Ward
Metrics
H-Index
i10 Index
Citation Counts
48
80
7,876
marine biology
suspension feeding
bivalves
nanoparticles
microplastics
Rankings
Ranking Based On Selection: 8
Ann Bucklin
Metrics
H-Index
i10 Index
Citation Counts
47
94
6,558
Rankings
Ranking Based On Selection: 9
Heidi Dierssen
Metrics
H-Index
i10 Index
Citation Counts
44
84
6,767
Rankings
Ranking Based On Selection: 10
George Mcmanus
Metrics
H-Index
i10 Index
Citation Counts
44
78
6,920

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
Craig Tobias
Metrics
H-Index
i10 Index
Citation Counts
38
62
7,228
Rankings
Ranking Based On Selection: 12
Hannes Baumann
Metrics
H-Index
i10 Index
Citation Counts
35
61
5,222
Rankings
Ranking Based On Selection: 13
Ed Monahan
Metrics
H-Index
i10 Index
Citation Counts
33
64
5,920
air-sea interaction
physical oceanography
marine meteorology
Rankings
Ranking Based On Selection: 14
Julie Granger
Metrics
H-Index
i10 Index
Citation Counts
28
40
4,687
Rankings
Ranking Based On Selection: 16
David Lund
Metrics
H-Index
i10 Index
Citation Counts
25
33
2,502
Rankings
Ranking Based On Selection: 17
Zofia Baumann
Metrics
H-Index
i10 Index
Citation Counts
20
25
1,671
marine ecology
biogeochemistry
chemical pollution
conservation & restoration
Rankings
Ranking Based On Selection: 19
Kimberley L Gallagher KJ Lane
Metrics
H-Index
i10 Index
Citation Counts
15
15
1,077
Rankings
Ranking Based On Selection: 20
Leonel Romero
Metrics
H-Index
i10 Index
Citation Counts
14
17
1,035
Rankings
Ranking Based On Selection: 21
Catherine M Matassa
Metrics
H-Index
i10 Index
Citation Counts
13
15
1,281
Rankings
Ranking Based On Selection: 22
Cesar Barbedo Rocha
Metrics
H-Index
i10 Index
Citation Counts
13
17
1,270