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" (873,937 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
Scott Doney
Oceanography
Biogeochemistry
Marine Ecosystems
Climate
Carbon Cycle
Metrics
H-Index
i10 Index
Citation
129
375
90,823
* Rankings
Ranking Based On Selection :3
Michael Pace
Ecosystem Ecology
Aquatic Ecology
Biogeochemistry
Food Webs
Metrics
H-Index
i10 Index
Citation
103
229
41,447
* Rankings
Ranking Based On Selection :5
Howard Epstein
ecosystem and community ecology
drylands
tundra
and temperate forests
Metrics
H-Index
i10 Index
Citation
71
172
23,744
James A Smith
Environmental Engineering
water quality
point-of-use water treatment
groundwater
Metrics
H-Index
i10 Index
Citation
49
107
8,351
* Rankings
Ranking Based On Selection :11
Matt Reidenbach
environmental fluid mechanics
coastal oceanography
marine ecosystems
Metrics
H-Index
i10 Index
Citation
33
54
3,233
Julianne Quinn
water resources management
multi-objective control
stochastic hydrology
risk analysis
uncertainty analysis
Metrics
H-Index
i10 Index
Citation
16
19
1,067
Garrick Louis
WASH
Sustainability
Social Equity in STEM
Sustainable Infrastructure
Rural Development
Metrics
H-Index
i10 Index
Citation
14
19
999
Majid Shafiee Jood
Water Resources Management
Climate Risk Management
Complex Systems Theory
Economics of Information
Metrics
H-Index
i10 Index
Citation
9
9
949
Beibei Gao
Chemical engineering
Microbiology
Microfluidics
Numerical Modeling
Data Science
Metrics
H-Index
i10 Index
Citation
3
1
41
Mohammad Hossein Tavakoli Dastjerdi
Soil Mechanics
Machine learning
Unsaturated Soils
Geo-environmental engineering
Geomechanics
Metrics
H-Index
i10 Index
Citation
2
1
51
Sixuan Zhang
Atmosphric chemistry
Air pollution
Machine learning
Environmental Justice
Environmental health
Metrics
H-Index
i10 Index
Citation
2
1
22
Jonah Fogel
Theoretical Ecology
Systems Thinking
Collaborative Decision Making
Land Use Planning and Policy Administration
Metrics
H-Index
i10 Index
Citation
2
1
48
Rankings
Ranking Based On Selection: 1
Scott Doney
Metrics
H-Index
i10 Index
Citation Counts
129
375
90,823
Oceanography
Biogeochemistry
Marine Ecosystems
Climate
Carbon Cycle
Rankings
Ranking Based On Selection: 2
James N Galloway
Metrics
H-Index
i10 Index
Citation Counts
111
276
85,125
Rankings
Ranking Based On Selection: 3
Michael Pace
Metrics
H-Index
i10 Index
Citation Counts
103
229
41,447
Rankings
Ranking Based On Selection: 4
William Ruddiman
Metrics
H-Index
i10 Index
Citation Counts
82
156
35,261
Rankings
Ranking Based On Selection: 5
Howard Epstein
Metrics
H-Index
i10 Index
Citation Counts
71
172
23,744
ecosystem and community ecology
drylands
tundra
and temperate forests
Rankings
Ranking Based On Selection: 6
Manuel Lerdau
Metrics
H-Index
i10 Index
Citation Counts
55
103
16,436
Rankings
Ranking Based On Selection: 7
James A Smith
Metrics
H-Index
i10 Index
Citation Counts
49
107
8,351
Environmental Engineering
water quality
point-of-use water treatment
groundwater
Rankings
Ranking Based On Selection: 8
Robert Davis
Metrics
H-Index
i10 Index
Citation Counts
45
83
11,083
Rankings
Ranking Based On Selection: 9
Bruce P Hayden
Metrics
H-Index
i10 Index
Citation Counts
39
80
5,708
Rankings
Ranking Based On Selection: 10
Jonathan L Goodall
Metrics
H-Index
i10 Index
Citation Counts
37
77
4,953
Rankings
Ranking Based On Selection: 11
Matt Reidenbach
Metrics
H-Index
i10 Index
Citation Counts
33
54
3,233
environmental fluid mechanics
coastal oceanography
marine ecosystems
Rankings
Ranking Based On Selection: 12
Kevin Grise
Metrics
H-Index
i10 Index
Citation Counts
31
40
3,376
Rankings
Ranking Based On Selection: 13
Raymond D Dueser
Metrics
H-Index
i10 Index
Citation Counts
26
35
2,805
Rankings
Ranking Based On Selection: 14
George Prpich
Metrics
H-Index
i10 Index
Citation Counts
24
32
1,737
Rankings
Ranking Based On Selection: 15
Julianne Quinn
Metrics
H-Index
i10 Index
Citation Counts
16
19
1,067
water resources management
multi-objective control
stochastic hydrology
risk analysis
uncertainty analysis
Rankings
Ranking Based On Selection: 16
Garrick Louis
Metrics
H-Index
i10 Index
Citation Counts
14
19
999
WASH
Sustainability
Social Equity in STEM
Sustainable Infrastructure
Rural Development
Rankings
Ranking Based On Selection: 17
Majid Shafiee Jood
Metrics
H-Index
i10 Index
Citation Counts
9
9
949
Water Resources Management
Climate Risk Management
Complex Systems Theory
Economics of Information
Rankings
Ranking Based On Selection: 18
Beibei Gao
Metrics
H-Index
i10 Index
Citation Counts
3
1
41
Chemical engineering
Microbiology
Microfluidics
Numerical Modeling
Data Science
Rankings
Ranking Based On Selection: 19
Mohammad Hossein Tavakoli Dastjerdi
Metrics
H-Index
i10 Index
Citation Counts
2
1
51
Soil Mechanics
Machine learning
Unsaturated Soils
Geo-environmental engineering
Geomechanics
Rankings
Ranking Based On Selection: 20
Sixuan Zhang
Metrics
H-Index
i10 Index
Citation Counts
2
1
22
Atmosphric chemistry
Air pollution
Machine learning
Environmental Justice
Environmental health
Rankings
Ranking Based On Selection: 21
Jacob Malcomb
Metrics
H-Index
i10 Index
Citation Counts
2
1
19
Rankings
Ranking Based On Selection: 22
Jonah Fogel
Metrics
H-Index
i10 Index
Citation Counts
2
1
48
Theoretical Ecology
Systems Thinking
Collaborative Decision Making
Land Use Planning and Policy Administration
Rankings
Ranking Based On Selection: 23
Ana C Diaz-Hernandez
Metrics
H-Index
i10 Index
Citation Counts
1
1
17