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" (873,864 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 B Jackson
biogeochemistry
ecology
environmental science
climate change
ecohydrology
Metrics
H-Index
i10 Index
Citation
170
485
159,936
* Rankings
Ranking Based On Selection :3
Gretchen C Daily
conservation science
ecosystem services
environmental science
sustainable agriculture
sustainable development
Metrics
H-Index
i10 Index
Citation
122
246
97,687
* Rankings
Ranking Based On Selection :5
Martin Reinhard
Environmental Science and Engineering
Stanford University
Research Professor
National University of Singapore
Metrics
H-Index
i10 Index
Citation
88
179
24,313
* Rankings
Ranking Based On Selection :6
Alexandria Boehm
Water Quality
Environmental Engineering
Applied Microbiology
Coastal Water Quality
Water and Sanitation in Developing Countr
Metrics
H-Index
i10 Index
Citation
82
240
21,291
* Rankings
Ranking Based On Selection :7
Craig Criddle
environmental biotechnology
resource recovery
remediation
environmental engineering
Metrics
H-Index
i10 Index
Citation
80
202
25,555
* Rankings
Ranking Based On Selection :8
Richard G Luthy
Environmental Engineering
Water Quality Engineering & Science
Metrics
H-Index
i10 Index
Citation
79
194
23,888
Steven Gorelick
water security
water supply
hydrogeology
hydrogeophysics
water resources systems
Metrics
H-Index
i10 Index
Citation
74
154
18,735
* Rankings
Ranking Based On Selection :10
Anna M Michalak
carbon cycle
water resources
climate change
inverse problems
spatial statistics
Metrics
H-Index
i10 Index
Citation
60
144
16,427
* Rankings
Ranking Based On Selection :11
Wayne Ott
environmental engineering
public health
exposure measurement
secondhand smoke
Metrics
H-Index
i10 Index
Citation
47
100
14,295
* Rankings
Ranking Based On Selection :12
Guangxu Chen
Interfacial Chemistry
Nanomaterials and cluster
Interfacial Catalysis
Environmental catalysis
Metrics
H-Index
i10 Index
Citation
44
73
13,116
Lisa M Curran
natural resource management
forestry
tropical ecology
land use
livelihoods
Metrics
H-Index
i10 Index
Citation
43
61
11,585
Laura H Kwong|Layla Kwong
Planetary health
exposure science
water
sanitation
and hygiene in low-income countries
Metrics
H-Index
i10 Index
Citation
20
27
1,698
Wenyu Gu
Environmental Microbiology
Environmental Engineering
Applied Microbiology
Metrics
H-Index
i10 Index
Citation
18
21
958
Michelle Tigchelaar
climate change
aquatic foods
food and nutrition security
decent work
Metrics
H-Index
i10 Index
Citation
17
20
3,100
Seogi Kang
Geophysics
Hydrogeophysics
Inverse Problems
Groundwater
Minerals
Metrics
H-Index
i10 Index
Citation
14
20
936
Yeo-Myoung Cho
Environmental Engineering and Science
Water Resource
Restoration and Remediation
Water
Metrics
H-Index
i10 Index
Citation
14
18
1,065
Matthew Stephen Colgan
climate change
ecosystem ecology
airborne imaging spectroscopy & LiDAR
image processing algorithms
precision agriculture
Metrics
H-Index
i10 Index
Citation
13
13
4,237
Alesia Montgomery
urban sociology
environmental sociology
technology studies
ethnography
race/class/gender
Metrics
H-Index
i10 Index
Citation
9
9
565
Xikun Liu
CGT
Environmental Microbiology
Metagenomics
Sequencing
Environmental Engineering
Metrics
H-Index
i10 Index
Citation
7
7
196
Cynthia Brosque
Civil and Environmental Engineering
Construction Robotics
Human-Robot Collaboration
Metrics
H-Index
i10 Index
Citation
6
6
192
Woonghee Lee
Electrocatalysis
Electrochemistry
Electrochemical Engineering
Environmental Engineering
Metrics
H-Index
i10 Index
Citation
6
4
87
Jerry Huayang Tang
Human-Centered AI
Social Computing
Computer Engineering
Data Analytics
Environmental Science
Metrics
H-Index
i10 Index
Citation
4
2
181
Jeannette Laramee
Environmental engineering
sustainable development
biogas
decentralized wastewater treatment
Metrics
H-Index
i10 Index
Citation
2
2
121
Lama El Halabi|Lama Halabi
data-driven modeling
Renewable Energy
Fluid mechanics
Environmental engineering
Metrics
H-Index
i10 Index
Citation
1
1
46
Rankings
Ranking Based On Selection: 1
Robert B Jackson
Metrics
H-Index
i10 Index
Citation Counts
170
485
159,936
biogeochemistry
ecology
environmental science
climate change
ecohydrology
Rankings
Ranking Based On Selection: 2
Christopher B Field
Metrics
H-Index
i10 Index
Citation Counts
162
380
169,710
Rankings
Ranking Based On Selection: 3
Gretchen C Daily
Metrics
H-Index
i10 Index
Citation Counts
122
246
97,687
conservation science
ecosystem services
environmental science
sustainable agriculture
sustainable development
Rankings
Ranking Based On Selection: 4
Perry Mccarty
Metrics
H-Index
i10 Index
Citation Counts
109
287
56,940
Rankings
Ranking Based On Selection: 5
Martin Reinhard
Metrics
H-Index
i10 Index
Citation Counts
88
179
24,313
Environmental Science and Engineering
Stanford University
Research Professor
National University of Singapore
Rankings
Ranking Based On Selection: 6
Alexandria Boehm
Metrics
H-Index
i10 Index
Citation Counts
82
240
21,291
Water Quality
Environmental Engineering
Applied Microbiology
Coastal Water Quality
Water and Sanitation in Developing Countr
Rankings
Ranking Based On Selection: 7
Craig Criddle
Metrics
H-Index
i10 Index
Citation Counts
80
202
25,555
environmental biotechnology
resource recovery
remediation
environmental engineering
Rankings
Ranking Based On Selection: 8
Richard G Luthy
Metrics
H-Index
i10 Index
Citation Counts
79
194
23,888
Environmental Engineering
Water Quality Engineering & Science
Rankings
Ranking Based On Selection: 9
Steven Gorelick
Metrics
H-Index
i10 Index
Citation Counts
74
154
18,735
water security
water supply
hydrogeology
hydrogeophysics
water resources systems
Rankings
Ranking Based On Selection: 10
Anna M Michalak
Metrics
H-Index
i10 Index
Citation Counts
60
144
16,427
carbon cycle
water resources
climate change
inverse problems
spatial statistics
Rankings
Ranking Based On Selection: 11
Wayne Ott
Metrics
H-Index
i10 Index
Citation Counts
47
100
14,295
environmental engineering
public health
exposure measurement
secondhand smoke
Rankings
Ranking Based On Selection: 12
Guangxu Chen
Metrics
H-Index
i10 Index
Citation Counts
44
73
13,116
Interfacial Chemistry
Nanomaterials and cluster
Interfacial Catalysis
Environmental catalysis
Rankings
Ranking Based On Selection: 13
Lisa M Curran
Metrics
H-Index
i10 Index
Citation Counts
43
61
11,585
natural resource management
forestry
tropical ecology
land use
livelihoods
Rankings
Ranking Based On Selection: 14
Rafael JP Schmitt
Metrics
H-Index
i10 Index
Citation Counts
25
31
3,782
Rankings
Ranking Based On Selection: 15
Adrian L Vogl
Metrics
H-Index
i10 Index
Citation Counts
21
27
4,117
Rankings
Ranking Based On Selection: 16
Laura H Kwong|Layla Kwong
Metrics
H-Index
i10 Index
Citation Counts
20
27
1,698
Planetary health
exposure science
water
sanitation
and hygiene in low-income countries
Rankings
Ranking Based On Selection: 17
Lingling Liu
Metrics
H-Index
i10 Index
Citation Counts
20
31
1,514
Rankings
Ranking Based On Selection: 18
Wenyu Gu
Metrics
H-Index
i10 Index
Citation Counts
18
21
958
Environmental Microbiology
Environmental Engineering
Applied Microbiology
Rankings
Ranking Based On Selection: 19
Michelle Tigchelaar
Metrics
H-Index
i10 Index
Citation Counts
17
20
3,100
climate change
aquatic foods
food and nutrition security
decent work
Rankings
Ranking Based On Selection: 20
Seogi Kang
Metrics
H-Index
i10 Index
Citation Counts
14
20
936
Geophysics
Hydrogeophysics
Inverse Problems
Groundwater
Minerals
Rankings
Ranking Based On Selection: 21
Yeo-Myoung Cho
Metrics
H-Index
i10 Index
Citation Counts
14
18
1,065
Environmental Engineering and Science
Water Resource
Restoration and Remediation
Water
Rankings
Ranking Based On Selection: 22
Matthew Stephen Colgan
Metrics
H-Index
i10 Index
Citation Counts
13
13
4,237
climate change
ecosystem ecology
airborne imaging spectroscopy & LiDAR
image processing algorithms
precision agriculture
Rankings
Ranking Based On Selection: 23
Alesia Montgomery
Metrics
H-Index
i10 Index
Citation Counts
9
9
565
urban sociology
environmental sociology
technology studies
ethnography
race/class/gender
Rankings
Ranking Based On Selection: 24
Wiley Jennings
Metrics
H-Index
i10 Index
Citation Counts
8
8
511
Environmental engineering
water quality
waterborne pathogens
Rankings
Ranking Based On Selection: 25
Xikun Liu
Metrics
H-Index
i10 Index
Citation Counts
7
7
196
CGT
Environmental Microbiology
Metagenomics
Sequencing
Environmental Engineering
Rankings
Ranking Based On Selection: 26
Astrid N. Zamora, Mph
Metrics
H-Index
i10 Index
Citation Counts
7
7
185
Rankings
Ranking Based On Selection: 27
Yuan Zhuang
Metrics
H-Index
i10 Index
Citation Counts
7
7
592
Rankings
Ranking Based On Selection: 28
Cynthia Brosque
Metrics
H-Index
i10 Index
Citation Counts
6
6
192
Civil and Environmental Engineering
Construction Robotics
Human-Robot Collaboration
Rankings
Ranking Based On Selection: 29
Woonghee Lee
Metrics
H-Index
i10 Index
Citation Counts
6
4
87
Electrocatalysis
Electrochemistry
Electrochemical Engineering
Environmental Engineering
Rankings
Ranking Based On Selection: 30
Jay M. Thompson
Metrics
H-Index
i10 Index
Citation Counts
6
5
236
Rankings
Ranking Based On Selection: 31
Yuanqing Li
Metrics
H-Index
i10 Index
Citation Counts
5
5
298
Rankings
Ranking Based On Selection: 32
Cindy Weng
Metrics
H-Index
i10 Index
Citation Counts
5
4
327
Rankings
Ranking Based On Selection: 33
Jerry Huayang Tang
Metrics
H-Index
i10 Index
Citation Counts
4
2
181
Human-Centered AI
Social Computing
Computer Engineering
Data Analytics
Environmental Science
Rankings
Ranking Based On Selection: 34
James C. Winter
Metrics
H-Index
i10 Index
Citation Counts
3
2
76
Rankings
Ranking Based On Selection: 35
Alison Fritz
Metrics
H-Index
i10 Index
Citation Counts
3
2
35
Rankings
Ranking Based On Selection: 37
Jeannette Laramee
Metrics
H-Index
i10 Index
Citation Counts
2
2
121
Environmental engineering
sustainable development
biogas
decentralized wastewater treatment
Rankings
Ranking Based On Selection: 38
Chia-Yi Lin
Metrics
H-Index
i10 Index
Citation Counts
1
1
105
Rankings
Ranking Based On Selection: 39
Lama El Halabi|Lama Halabi
Metrics
H-Index
i10 Index
Citation Counts
1
1
46
data-driven modeling
Renewable Energy
Fluid mechanics
Environmental engineering
Rankings
Ranking Based On Selection: 40
Erika Macdonald
Metrics
H-Index
i10 Index
Citation Counts
1
0
7