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
Frank Mcdermott
Geology
Chemical weathering and CO2
Palaeoclimatology
Climate change
Isotope geochemistry
Metrics
H-Index
i10 Index
Citation
57
105
16,778
* Rankings
Ranking Based On Selection: 3
J Stephen Daly
Geology
Geochemistry
Mineralogy
Petrology
Precambrian
Metrics
H-Index
i10 Index
Citation
45
102
6,034
* Rankings
Ranking Based On Selection: 4
Francesco Pilla
Citizen Science
Climate-Neutral and Smart Cities
Geospatial data
Network of sensors
Urban technology
Metrics
H-Index
i10 Index
Citation
40
87
7,276
* Rankings
Ranking Based On Selection: 5
Eoghan P Holohan
Volcano-tectonics
Land Subsidence
Structural Geology
Metrics
H-Index
i10 Index
Citation
25
37
2,014
* Rankings
Ranking Based On Selection: 7
Lingli Zhou
Ore Geology
Geochemistry
Applied Mineralogy
Analytical Mineralogy
Sedimentology
Metrics
H-Index
i10 Index
Citation
24
43
2,044
* Rankings
Ranking Based On Selection: 9
Ivan Lokmer
Geophysics
Seismology
Quantitative Geosciences
Metrics
H-Index
i10 Index
Citation
23
37
1,468

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* Rankings
Ranking Based On Selection: 12
Budi Zhao
Geotechnical Engineering
Geomechanics
Soil Mechanics
Soil Physics
Metrics
H-Index
i10 Index
Citation
14
17
1,480
* Rankings
Ranking Based On Selection: 14
Chamil Kulatunga
GeoStatistics
Federated Machine Learning
Data-driven Agriculture
Internet QoS
Metrics
H-Index
i10 Index
Citation
11
12
378
* Rankings
Ranking Based On Selection: 15
Claire E Harnett
volcanology
rock mechanics
edifice stability
lava domes
discrete element modelling
Metrics
H-Index
i10 Index
Citation
9
9
330
* Rankings
Ranking Based On Selection: 16
Paul Slezak
Rare earth elements
carbonatites
isotope geochemistry
critical raw materials
Metrics
H-Index
i10 Index
Citation
9
9
237
* Rankings
Ranking Based On Selection: 17
Chiara Cocco
geodesign
participatory planning
spatial planning
geospatial technologies
co-design
Metrics
H-Index
i10 Index
Citation
9
9
305
* Rankings
Ranking Based On Selection: 19
Mengdi Pan
gas hydrates
Raman spectroscopy
geochemistry
Metrics
H-Index
i10 Index
Citation
8
7
179
Tine Ningal
Cartography
GIS
Remote Sensing
Urban climate
Urban Forest/Urban Trees
Metrics
H-Index
i10 Index
Citation
7
7
701
Ana Serrenho
Project Management
R&D
Environmental Engineering
Fluid Mechanics
Metrics
H-Index
i10 Index
Citation
7
7
409
Aisling Soden
Earth Science
Structural geology
Fault mechanics
Seismic Interpretation
Metrics
H-Index
i10 Index
Citation
6
5
389
Sebastian Zimmermann
Sedimentology
Stratigraphy
Provenance
Heavy Minerals
Isotope geochronology
Metrics
H-Index
i10 Index
Citation
5
5
157
Rankings
Ranking Based On Selection: 1
John J Walsh
Metrics
H-Index
i10 Index
Citation Counts
69
150
17,995
Rankings
Ranking Based On Selection: 2
Frank Mcdermott
Metrics
H-Index
i10 Index
Citation Counts
57
105
16,778
Geology
Chemical weathering and CO2
Palaeoclimatology
Climate change
Isotope geochemistry
Rankings
Ranking Based On Selection: 3
J Stephen Daly
Metrics
H-Index
i10 Index
Citation Counts
45
102
6,034
Geology
Geochemistry
Mineralogy
Petrology
Precambrian
Rankings
Ranking Based On Selection: 4
Francesco Pilla
Metrics
H-Index
i10 Index
Citation Counts
40
87
7,276
Citizen Science
Climate-Neutral and Smart Cities
Geospatial data
Network of sensors
Urban technology
Rankings
Ranking Based On Selection: 5
Eoghan P Holohan
Metrics
H-Index
i10 Index
Citation Counts
25
37
2,014
Volcano-tectonics
Land Subsidence
Structural Geology
Rankings
Ranking Based On Selection: 6
Gareth Shane O Brien
Metrics
H-Index
i10 Index
Citation Counts
25
42
1,817
Rankings
Ranking Based On Selection: 7
Lingli Zhou
Metrics
H-Index
i10 Index
Citation Counts
24
43
2,044
Ore Geology
Geochemistry
Applied Mineralogy
Analytical Mineralogy
Sedimentology
Rankings
Ranking Based On Selection: 8
Shane Donohue
Metrics
H-Index
i10 Index
Citation Counts
23
42
1,717
Rankings
Ranking Based On Selection: 9
Ivan Lokmer
Metrics
H-Index
i10 Index
Citation Counts
23
37
1,468
Geophysics
Seismology
Quantitative Geosciences
Rankings
Ranking Based On Selection: 10
David Van Acken
Metrics
H-Index
i10 Index
Citation Counts
19
22
953

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Rankings
Ranking Based On Selection: 11
Colman Gallagher
Metrics
H-Index
i10 Index
Citation Counts
17
29
912
Rankings
Ranking Based On Selection: 12
Budi Zhao
Metrics
H-Index
i10 Index
Citation Counts
14
17
1,480
Geotechnical Engineering
Geomechanics
Soil Mechanics
Soil Physics
Rankings
Ranking Based On Selection: 13
Mark Chatting
Metrics
H-Index
i10 Index
Citation Counts
13
15
396
Rankings
Ranking Based On Selection: 14
Chamil Kulatunga
Metrics
H-Index
i10 Index
Citation Counts
11
12
378
GeoStatistics
Federated Machine Learning
Data-driven Agriculture
Internet QoS
Rankings
Ranking Based On Selection: 15
Claire E Harnett
Metrics
H-Index
i10 Index
Citation Counts
9
9
330
volcanology
rock mechanics
edifice stability
lava domes
discrete element modelling
Rankings
Ranking Based On Selection: 16
Paul Slezak
Metrics
H-Index
i10 Index
Citation Counts
9
9
237
Rare earth elements
carbonatites
isotope geochemistry
critical raw materials
Rankings
Ranking Based On Selection: 17
Chiara Cocco
Metrics
H-Index
i10 Index
Citation Counts
9
9
305
geodesign
participatory planning
spatial planning
geospatial technologies
co-design
Rankings
Ranking Based On Selection: 18
James Johnson
Metrics
H-Index
i10 Index
Citation Counts
9
9
813
Rankings
Ranking Based On Selection: 19
Mengdi Pan
Metrics
H-Index
i10 Index
Citation Counts
8
7
179
Rankings
Ranking Based On Selection: 20
Tine Ningal
Metrics
H-Index
i10 Index
Citation Counts
7
7
701
Cartography
GIS
Remote Sensing
Urban climate
Urban Forest/Urban Trees
Rankings
Ranking Based On Selection: 21
Italo Sousa De Sena
Metrics
H-Index
i10 Index
Citation Counts
7
5
241
Rankings
Ranking Based On Selection: 22
Ana Serrenho
Metrics
H-Index
i10 Index
Citation Counts
7
7
409
Project Management
R&D
Environmental Engineering
Fluid Mechanics
Rankings
Ranking Based On Selection: 23
Aisling Soden
Metrics
H-Index
i10 Index
Citation Counts
6
5
389
Earth Science
Structural geology
Fault mechanics
Seismic Interpretation
Rankings
Ranking Based On Selection: 24
Sebastian Zimmermann
Metrics
H-Index
i10 Index
Citation Counts
5
5
157
Sedimentology
Stratigraphy
Provenance
Heavy Minerals
Isotope geochronology
Rankings
Ranking Based On Selection: 25
Niall Buckley
Metrics
H-Index
i10 Index
Citation Counts
4
3
183