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" (873,899 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
Martin Asplund
Astrophysics
stellar astrophysics
Galactic astronomy
extrasolar planets
early Universe
Metrics
H-Index
i10 Index
Citation
115
330
57,353
* Rankings
Ranking Based On Selection: 4
Ian S Williams
SIMS microanalysis (SHRIMP)
isotope geochemistry
geochronology
palaeoclimatology
Metrics
H-Index
i10 Index
Citation
96
260
41,792
* Rankings
Ranking Based On Selection: 6
AJ Jakeman
Hydrology
integrated water resources assessment
modeling
Metrics
H-Index
i10 Index
Citation
78
243
30,040
* Rankings
Ranking Based On Selection: 11
Barry Croke
Hydrology
integrated water resource management
uncertainty analysis
Metrics
H-Index
i10 Index
Citation
49
119
11,031
* Rankings
Ranking Based On Selection: 16
James Gilbert
astronomy
instrumentation
astronomical instrumentation
piezoelectrics
Metrics
H-Index
i10 Index
Citation
17
21
853
Rankings
Ranking Based On Selection: 1
Martin Asplund
Metrics
H-Index
i10 Index
Citation Counts
115
330
57,353
Astrophysics
stellar astrophysics
Galactic astronomy
extrasolar planets
early Universe
Rankings
Ranking Based On Selection: 2
Bruce A Peterson
Metrics
H-Index
i10 Index
Citation Counts
102
248
52,627
Rankings
Ranking Based On Selection: 3
Brian Schmidt
Metrics
H-Index
i10 Index
Citation Counts
96
243
69,786
Rankings
Ranking Based On Selection: 4
Ian S Williams
Metrics
H-Index
i10 Index
Citation Counts
96
260
41,792
SIMS microanalysis (SHRIMP)
isotope geochemistry
geochronology
palaeoclimatology
Rankings
Ranking Based On Selection: 5
Michael S Bessell
Metrics
H-Index
i10 Index
Citation Counts
91
251
36,801
Rankings
Ranking Based On Selection: 6
AJ Jakeman
Metrics
H-Index
i10 Index
Citation Counts
78
243
30,040
Rankings
Ranking Based On Selection: 7
Naomi McClure Griffiths
Metrics
H-Index
i10 Index
Citation Counts
63
171
15,465
Rankings
Ranking Based On Selection: 8
Alasdair Dougal Mackey
Metrics
H-Index
i10 Index
Citation Counts
62
136
11,834
Rankings
Ranking Based On Selection: 9
Aaron Dotter
Metrics
H-Index
i10 Index
Citation Counts
58
129
20,532
Rankings
Ranking Based On Selection: 10
Geoffrey Bicknell
Metrics
H-Index
i10 Index
Citation Counts
56
154
10,982
Rankings
Ranking Based On Selection: 11
Barry Croke
Metrics
H-Index
i10 Index
Citation Counts
49
119
11,031
Hydrology
integrated water resource management
uncertainty analysis
Rankings
Ranking Based On Selection: 12
Stefan Keller
Metrics
H-Index
i10 Index
Citation Counts
43
72
8,227
Rankings
Ranking Based On Selection: 13
Sven Buder
Metrics
H-Index
i10 Index
Citation Counts
31
64
3,855
Rankings
Ranking Based On Selection: 14
Anna M Moore
Metrics
H-Index
i10 Index
Citation Counts
31
71
3,374
Rankings
Ranking Based On Selection: 15
Tony Travouillon
Metrics
H-Index
i10 Index
Citation Counts
26
53
3,000
Rankings
Ranking Based On Selection: 16
James Gilbert
Metrics
H-Index
i10 Index
Citation Counts
17
21
853
astronomy
instrumentation
astronomical instrumentation
piezoelectrics
Rankings
Ranking Based On Selection: 17
Ryan Ridden-Harper
Metrics
H-Index
i10 Index
Citation Counts
13
16
4,629