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
Gillian Knapp
planet imaging
stellar astrophysics
interstellar medium
Metrics
H-Index
i10 Index
Citation
137
382
130,515
* Rankings
Ranking Based On Selection: 3
Michael Oppenheimer
Climate Change - Physcial Science
Impacts and Risks
Public Policy
Metrics
H-Index
i10 Index
Citation
91
227
54,484
* Rankings
Ranking Based On Selection: 5
Thomas Duffy
Geophysics
high-pressure research
materials science
Metrics
H-Index
i10 Index
Citation
70
176
13,998
* Rankings
Ranking Based On Selection: 6
Blair Schoene
geoscience
geochemistry
geochronology
geology
tectonics
Metrics
H-Index
i10 Index
Citation
56
84
16,980
* Rankings
Ranking Based On Selection: 8
Christopher Chyba
planetary science
origins of life
electrodynamics
nuclear nonproliferation and arms control
biological security
Metrics
H-Index
i10 Index
Citation
47
85
10,913
* Rankings
Ranking Based On Selection: 10
Ian Bourg
Geochemistry
Environmental Chemistry
Clay Minerals
Mineral-Water Interfaces
Soft Earth Geophysics
Metrics
H-Index
i10 Index
Citation
43
57
5,940

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* Rankings
Ranking Based On Selection: 11
John Andrew Higgins
geochemistry
carbon cycle
carbonate chemistry
stable isotopes
Metrics
H-Index
i10 Index
Citation
42
70
6,710
* Rankings
Ranking Based On Selection: 13
Xinning Zhang
Microbial Biogeochemistry
Environmental Microbiology
Geobiology
Metrics
H-Index
i10 Index
Citation
21
26
3,450
* Rankings
Ranking Based On Selection: 16
Behrooz Ferdowsi
earth surface processes
granular materials
geophysics
friction
fault mechanics
Metrics
H-Index
i10 Index
Citation
13
14
754
Linta Reji
Microbial ecology
Biogeochemistry
Geomicrobiology
Metrics
H-Index
i10 Index
Citation
7
7
235
Mebrahtu F Weldeghebriel
Ancient-ocean chemistry
paleoclimatology
low-temperature geochemistry
Metrics
H-Index
i10 Index
Citation
5
3
58
Xiaoyu Wang
Computational Mechanics
Geomechanics
Earthquake
Machine Learning
Metrics
H-Index
i10 Index
Citation
5
1
58
Jennifer Willemsen
Environmental Chemistry
Geochemistry
Organic Contaminants
Clay Minerals
Metrics
H-Index
i10 Index
Citation
4
3
156
Enrique M Del Castillo
Geomechanics
Computational Mechanics
Structural Geology
Geotechnical Engineering
Granular Matter
Metrics
H-Index
i10 Index
Citation
4
2
67
Matthew D Nadeau
Paleoclimate
Earth History
Isotope Geochemistry
Carbonate Diagenesis
Metrics
H-Index
i10 Index
Citation
3
2
60
Ryan Manzuk
geology
geobiology
paleobiology
machine learning
computer vision
Metrics
H-Index
i10 Index
Citation
3
0
13
Hagar Elbishlawi
Biogeochemistry
water quality
water pollution
remediation
sediments
Metrics
H-Index
i10 Index
Citation
2
2
56
Theodore Green
geochronology
large igneous provinces
mass extinctions
Metrics
H-Index
i10 Index
Citation
2
1
36
Mason Scher
stable isotope geochemistry
paleoecology
paleoclimate
plant science
Metrics
H-Index
i10 Index
Citation
1
1
14
Rankings
Ranking Based On Selection: 1
Gillian Knapp
Metrics
H-Index
i10 Index
Citation Counts
137
382
130,515
planet imaging
stellar astrophysics
interstellar medium
Rankings
Ranking Based On Selection: 2
Jorge L Sarmiento
Metrics
H-Index
i10 Index
Citation Counts
119
259
71,637
Rankings
Ranking Based On Selection: 3
Michael Oppenheimer
Metrics
H-Index
i10 Index
Citation Counts
91
227
54,484
Climate Change - Physcial Science
Impacts and Risks
Public Policy
Rankings
Ranking Based On Selection: 4
Jeroen Tromp
Metrics
H-Index
i10 Index
Citation Counts
73
188
25,952
Rankings
Ranking Based On Selection: 5
Thomas Duffy
Metrics
H-Index
i10 Index
Citation Counts
70
176
13,998
Geophysics
high-pressure research
materials science
Rankings
Ranking Based On Selection: 6
Blair Schoene
Metrics
H-Index
i10 Index
Citation Counts
56
84
16,980
geoscience
geochemistry
geochronology
geology
tectonics
Rankings
Ranking Based On Selection: 7
Lincoln S Hollister
Metrics
H-Index
i10 Index
Citation Counts
53
84
10,790
Rankings
Ranking Based On Selection: 8
Christopher Chyba
Metrics
H-Index
i10 Index
Citation Counts
47
85
10,913
planetary science
origins of life
electrodynamics
nuclear nonproliferation and arms control
biological security
Rankings
Ranking Based On Selection: 9
Adam C Maloof
Metrics
H-Index
i10 Index
Citation Counts
44
74
9,677
Rankings
Ranking Based On Selection: 10
Ian Bourg
Metrics
H-Index
i10 Index
Citation Counts
43
57
5,940
Geochemistry
Environmental Chemistry
Clay Minerals
Mineral-Water Interfaces
Soft Earth Geophysics

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
John Andrew Higgins
Metrics
H-Index
i10 Index
Citation Counts
42
70
6,710
geochemistry
carbon cycle
carbonate chemistry
stable isotopes
Rankings
Ranking Based On Selection: 12
Frederik J Simons
Metrics
H-Index
i10 Index
Citation Counts
39
68
6,082
Rankings
Ranking Based On Selection: 13
Xinning Zhang
Metrics
H-Index
i10 Index
Citation Counts
21
26
3,450
Microbial Biogeochemistry
Environmental Microbiology
Geobiology
Rankings
Ranking Based On Selection: 14
Anne Sofie C Ahm
Metrics
H-Index
i10 Index
Citation Counts
16
18
1,238
Rankings
Ranking Based On Selection: 15
Nicolas Van Oostende
Metrics
H-Index
i10 Index
Citation Counts
14
15
636
Rankings
Ranking Based On Selection: 16
Behrooz Ferdowsi
Metrics
H-Index
i10 Index
Citation Counts
13
14
754
earth surface processes
granular materials
geophysics
friction
fault mechanics
Rankings
Ranking Based On Selection: 17
Emma Bertran
Metrics
H-Index
i10 Index
Citation Counts
8
8
131
Rankings
Ranking Based On Selection: 18
Linta Reji
Metrics
H-Index
i10 Index
Citation Counts
7
7
235
Microbial ecology
Biogeochemistry
Geomicrobiology
Rankings
Ranking Based On Selection: 19
Noe-Heon Kim
Metrics
H-Index
i10 Index
Citation Counts
7
5
139
Rankings
Ranking Based On Selection: 20
Julia Wilcots
Metrics
H-Index
i10 Index
Citation Counts
6
2
204
sedimentology
carbonates
dolomite
Earth history
Rankings
Ranking Based On Selection: 21
Mebrahtu F Weldeghebriel
Metrics
H-Index
i10 Index
Citation Counts
5
3
58
Ancient-ocean chemistry
paleoclimatology
low-temperature geochemistry
Rankings
Ranking Based On Selection: 22
Xiaoyu Wang
Metrics
H-Index
i10 Index
Citation Counts
5
1
58
Computational Mechanics
Geomechanics
Earthquake
Machine Learning
Rankings
Ranking Based On Selection: 23
Nirakar Sapkota
Metrics
H-Index
i10 Index
Citation Counts
5
2
76
Space Science
Geophysics
Solar Physics
Space Weather
Rankings
Ranking Based On Selection: 24
Yajun Peng
Metrics
H-Index
i10 Index
Citation Counts
4
4
121
Rankings
Ranking Based On Selection: 25
Jennifer Willemsen
Metrics
H-Index
i10 Index
Citation Counts
4
3
156
Environmental Chemistry
Geochemistry
Organic Contaminants
Clay Minerals
Rankings
Ranking Based On Selection: 26
Devan Nisson
Metrics
H-Index
i10 Index
Citation Counts
4
3
85
Rankings
Ranking Based On Selection: 27
Joel D Simon
Metrics
H-Index
i10 Index
Citation Counts
4
3
41
Rankings
Ranking Based On Selection: 28
Enrique M Del Castillo
Metrics
H-Index
i10 Index
Citation Counts
4
2
67
Geomechanics
Computational Mechanics
Structural Geology
Geotechnical Engineering
Granular Matter
Rankings
Ranking Based On Selection: 29
Lucas Sawade
Metrics
H-Index
i10 Index
Citation Counts
3
3
70
Geophysics
Seismology
High Performance Computing
Rankings
Ranking Based On Selection: 30
Matthew D Nadeau
Metrics
H-Index
i10 Index
Citation Counts
3
2
60
Paleoclimate
Earth History
Isotope Geochemistry
Carbonate Diagenesis
Rankings
Ranking Based On Selection: 31
Paridhi Rustogi
Metrics
H-Index
i10 Index
Citation Counts
3
2
26
Rankings
Ranking Based On Selection: 32
Xiaohan Li
Metrics
H-Index
i10 Index
Citation Counts
3
1
93
Rankings
Ranking Based On Selection: 33
Chao Song
Metrics
H-Index
i10 Index
Citation Counts
3
1
39
Rankings
Ranking Based On Selection: 34
Ryan Manzuk
Metrics
H-Index
i10 Index
Citation Counts
3
0
13
geology
geobiology
paleobiology
machine learning
computer vision
Rankings
Ranking Based On Selection: 35
Hagar Elbishlawi
Metrics
H-Index
i10 Index
Citation Counts
2
2
56
Biogeochemistry
water quality
water pollution
remediation
sediments
Rankings
Ranking Based On Selection: 36
Terance J Schuh
Metrics
H-Index
i10 Index
Citation Counts
2
2
41
Rankings
Ranking Based On Selection: 37
Theodore Green
Metrics
H-Index
i10 Index
Citation Counts
2
1
36
geochronology
large igneous provinces
mass extinctions
Rankings
Ranking Based On Selection: 38
Mingzhe Damon Dai|Mingzhe Dai
Metrics
H-Index
i10 Index
Citation Counts
2
1
26
Rankings
Ranking Based On Selection: 39
Fairuz Ishraque
Metrics
H-Index
i10 Index
Citation Counts
2
1
22
Paleoclimate
Glaciology
Geophysics
Computer Vision
Rankings
Ranking Based On Selection: 40
Jeffrey P Gay
Metrics
H-Index
i10 Index
Citation Counts
2
0
16
Rankings
Ranking Based On Selection: 41
Mathieu Poupon
Metrics
H-Index
i10 Index
Citation Counts
2
0
14
Rankings
Ranking Based On Selection: 42
Ian Karl Ocampo
Metrics
H-Index
i10 Index
Citation Counts
1
1
19
Rankings
Ranking Based On Selection: 43
Mason Scher
Metrics
H-Index
i10 Index
Citation Counts
1
1
14
stable isotope geochemistry
paleoecology
paleoclimate
plant science
Rankings
Ranking Based On Selection: 44
Hilary Wayland
Metrics
H-Index
i10 Index
Citation Counts
1
0
3