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
Robert Costanza
Ecological Economics
Landscape Ecology
Ecosystem Services
Environmental Science
Ecology
Metrics
H-Index
i10 Index
Citation
143
478
169,358
* Rankings
Ranking Based On Selection: 2
David I Stern
energy economics
economic growth
climate change
bibliometrics
ecological economics
Metrics
H-Index
i10 Index
Citation
62
120
27,379
* Rankings
Ranking Based On Selection: 3
Warwick McKibbin
Economic modelling
macroeconomics
climate change
demographics
pandemics
Metrics
H-Index
i10 Index
Citation
49
193
16,244
* Rankings
Ranking Based On Selection: 5
Ida Kubiszewski
Ecological Economics
Ecosystem Services
Energy
Well-Being Indicators
Metrics
H-Index
i10 Index
Citation
44
90
20,050
* Rankings
Ranking Based On Selection: 6
Kaliappa Kalirajan
Sources of growth
regional integration
international trade
Low-carbon energy systems in Asia
Metrics
H-Index
i10 Index
Citation
44
132
8,775
* Rankings
Ranking Based On Selection: 7
Matthew Gray
public policy
social policy
program evaluation
labor economics
Metrics
H-Index
i10 Index
Citation
44
156
7,546
* Rankings
Ranking Based On Selection: 8
John F McCarthy
Development Studies
Environmental Policy
Agrarian Change
Asian Studies
Anthropology
Metrics
H-Index
i10 Index
Citation
42
80
6,577
* Rankings
Ranking Based On Selection: 9
Helen Sullivan
public policy and administration
collaboration
urban governance
Metrics
H-Index
i10 Index
Citation
40
82
9,231
* Rankings
Ranking Based On Selection: 10
Budy P Resosudarmo
Economics
Regional Science
Public Policy
Resources & Environment
Development
Metrics
H-Index
i10 Index
Citation
38
84
4,608
* Rankings
Ranking Based On Selection: 11
Adrian Kay
Public Administration
Public Policy
Multilevel Governance
Islam
Metrics
H-Index
i10 Index
Citation
35
64
5,629
* Rankings
Ranking Based On Selection: 12
Chunlai Chen
Foreign Direct Investment
International Trade
China's Economy
Metrics
H-Index
i10 Index
Citation
31
52
2,441
* Rankings
Ranking Based On Selection: 14
Katherine Daniell
Water governance
participatory processes
decision-aiding
public policy
innovation
Metrics
H-Index
i10 Index
Citation
28
57
3,455
* Rankings
Ranking Based On Selection: 16
Ashley Schram
Global Governance
Trade and Investment
Public Policy
Social Determinants of Health
Health Inequity
Metrics
H-Index
i10 Index
Citation
26
44
4,536
* Rankings
Ranking Based On Selection: 17
Sharon Bessell
Children's Policy (Rights
Protection
Citizenship)
Research Methods and Ethics
Gender
Metrics
H-Index
i10 Index
Citation
26
42
2,579
* Rankings
Ranking Based On Selection: 19
Sujatha Raman
science and technology studies
science and democracy
energy transitions
biofuels
public engagement
Metrics
H-Index
i10 Index
Citation
24
41
2,499
* Rankings
Ranking Based On Selection: 20
Keith Barney
resource geography
political ecology
agrarian studies
Southeast Asian studies
Metrics
H-Index
i10 Index
Citation
21
32
1,832
* Rankings
Ranking Based On Selection: 21
Ying Yi Chih (池穎怡)
Public Project Mgmt
Public-Private Parterships
Project Value Co-creation
Well-being and
Metrics
H-Index
i10 Index
Citation
19
22
2,511
* Rankings
Ranking Based On Selection: 24
Tatsuyoshi Okimoto
Financial Econometrics
Empirical Finance
Applied Macroeconomics
Metrics
H-Index
i10 Index
Citation
18
23
1,956
* Rankings
Ranking Based On Selection: 25
Bjoern Dressel
Comparative Politics
Judicial Politics
Asia
Constitutionalism
Metrics
H-Index
i10 Index
Citation
18
25
1,137
David Stanton
Social Policy (particularly social security research and policy issues and history)
international comparisons and developments
Metrics
H-Index
i10 Index
Citation
16
23
1,205
Hoa Thi Minh Nguyen
Applied Economics
Microeconometrics
Poverty and Inequality
Food Policy.
Metrics
H-Index
i10 Index
Citation
13
16
824
Roshen Fernando
Macroeconomic Modelling
Climate Change
Infectious Diseases
Antimicrobial Resistance
COVID-19
Metrics
H-Index
i10 Index
Citation
12
14
4,315
Zheng WEI
Economic Growth and Demographic Changes
Labour Migration and Economic Development
Human Capital and TFP
Metrics
H-Index
i10 Index
Citation
8
8
545
Cathy Fussell
public administration
value
power
assemblage theory
Deleuze
Metrics
H-Index
i10 Index
Citation
2
0
6
Isi Unikowski
public administration
federalism
intergovernmental relations
intergovernmental management
Metrics
H-Index
i10 Index
Citation
1
0
6
Rankings
Ranking Based On Selection: 1
Robert Costanza
Metrics
H-Index
i10 Index
Citation Counts
143
478
169,358
Ecological Economics
Landscape Ecology
Ecosystem Services
Environmental Science
Ecology
Rankings
Ranking Based On Selection: 2
David I Stern
Metrics
H-Index
i10 Index
Citation Counts
62
120
27,379
energy economics
economic growth
climate change
bibliometrics
ecological economics
Rankings
Ranking Based On Selection: 3
Warwick McKibbin
Metrics
H-Index
i10 Index
Citation Counts
49
193
16,244
Economic modelling
macroeconomics
climate change
demographics
pandemics
Rankings
Ranking Based On Selection: 4
Frank Jotzo
Metrics
H-Index
i10 Index
Citation Counts
46
99
8,217
Rankings
Ranking Based On Selection: 5
Ida Kubiszewski
Metrics
H-Index
i10 Index
Citation Counts
44
90
20,050
Ecological Economics
Ecosystem Services
Energy
Well-Being Indicators
Rankings
Ranking Based On Selection: 6
Kaliappa Kalirajan
Metrics
H-Index
i10 Index
Citation Counts
44
132
8,775
Sources of growth
regional integration
international trade
Low-carbon energy systems in Asia
Rankings
Ranking Based On Selection: 7
Matthew Gray
Metrics
H-Index
i10 Index
Citation Counts
44
156
7,546
public policy
social policy
program evaluation
labor economics
Rankings
Ranking Based On Selection: 8
John F McCarthy
Metrics
H-Index
i10 Index
Citation Counts
42
80
6,577
Development Studies
Environmental Policy
Agrarian Change
Asian Studies
Anthropology
Rankings
Ranking Based On Selection: 9
Helen Sullivan
Metrics
H-Index
i10 Index
Citation Counts
40
82
9,231
public policy and administration
collaboration
urban governance
Rankings
Ranking Based On Selection: 10
Budy P Resosudarmo
Metrics
H-Index
i10 Index
Citation Counts
38
84
4,608
Economics
Regional Science
Public Policy
Resources & Environment
Development
Rankings
Ranking Based On Selection: 11
Adrian Kay
Metrics
H-Index
i10 Index
Citation Counts
35
64
5,629
Public Administration
Public Policy
Multilevel Governance
Islam
Rankings
Ranking Based On Selection: 12
Chunlai Chen
Metrics
H-Index
i10 Index
Citation Counts
31
52
2,441
Foreign Direct Investment
International Trade
China's Economy
Rankings
Ranking Based On Selection: 13
John Wanna
Metrics
H-Index
i10 Index
Citation Counts
31
88
4,627
Rankings
Ranking Based On Selection: 14
Katherine Daniell
Metrics
H-Index
i10 Index
Citation Counts
28
57
3,455
Water governance
participatory processes
decision-aiding
public policy
innovation
Rankings
Ranking Based On Selection: 15
Will Sanders
Metrics
H-Index
i10 Index
Citation Counts
28
86
3,445
Rankings
Ranking Based On Selection: 16
Ashley Schram
Metrics
H-Index
i10 Index
Citation Counts
26
44
4,536
Global Governance
Trade and Investment
Public Policy
Social Determinants of Health
Health Inequity
Rankings
Ranking Based On Selection: 17
Sharon Bessell
Metrics
H-Index
i10 Index
Citation Counts
26
42
2,579
Children's Policy (Rights
Protection
Citizenship)
Research Methods and Ethics
Gender
Rankings
Ranking Based On Selection: 18
Robert Breunig
Metrics
H-Index
i10 Index
Citation Counts
26
59
2,455
Rankings
Ranking Based On Selection: 19
Sujatha Raman
Metrics
H-Index
i10 Index
Citation Counts
24
41
2,499
science and technology studies
science and democracy
energy transitions
biofuels
public engagement
Rankings
Ranking Based On Selection: 20
Keith Barney
Metrics
H-Index
i10 Index
Citation Counts
21
32
1,832
resource geography
political ecology
agrarian studies
Southeast Asian studies
Rankings
Ranking Based On Selection: 21
Ying Yi Chih (池穎怡)
Metrics
H-Index
i10 Index
Citation Counts
19
22
2,511
Public Project Mgmt
Public-Private Parterships
Project Value Co-creation
Well-being and
Rankings
Ranking Based On Selection: 22
Jorrit Gosens
Metrics
H-Index
i10 Index
Citation Counts
19
20
1,425
Rankings
Ranking Based On Selection: 23
Lindy Orthia
Metrics
H-Index
i10 Index
Citation Counts
19
24
786
Rankings
Ranking Based On Selection: 24
Tatsuyoshi Okimoto
Metrics
H-Index
i10 Index
Citation Counts
18
23
1,956
Financial Econometrics
Empirical Finance
Applied Macroeconomics
Rankings
Ranking Based On Selection: 25
Bjoern Dressel
Metrics
H-Index
i10 Index
Citation Counts
18
25
1,137
Comparative Politics
Judicial Politics
Asia
Constitutionalism
Rankings
Ranking Based On Selection: 26
Matthew Dornan
Metrics
H-Index
i10 Index
Citation Counts
17
25
1,607
Economics
Public Policy
Energy Policy
Foreign Aid
Rankings
Ranking Based On Selection: 27
David Stanton
Metrics
H-Index
i10 Index
Citation Counts
16
23
1,205
Social Policy (particularly social security research and policy issues and history)
international comparisons and developments
Rankings
Ranking Based On Selection: 28
Hoa Thi Minh Nguyen
Metrics
H-Index
i10 Index
Citation Counts
13
16
824
Applied Economics
Microeconometrics
Poverty and Inequality
Food Policy.
Rankings
Ranking Based On Selection: 29
Roshen Fernando
Metrics
H-Index
i10 Index
Citation Counts
12
14
4,315
Macroeconomic Modelling
Climate Change
Infectious Diseases
Antimicrobial Resistance
COVID-19
Rankings
Ranking Based On Selection: 30
Fouzia Nasreen Sultana
Metrics
H-Index
i10 Index
Citation Counts
12
13
439
Rankings
Ranking Based On Selection: 31
Melanie Fisher
Metrics
H-Index
i10 Index
Citation Counts
12
13
787
Rankings
Ranking Based On Selection: 32
Zheng WEI
Metrics
H-Index
i10 Index
Citation Counts
8
8
545
Economic Growth and Demographic Changes
Labour Migration and Economic Development
Human Capital and TFP
Rankings
Ranking Based On Selection: 33
Thomas Kaydor|Tom Kaydor, Thomas Kaydor, Jr.
Metrics
H-Index
i10 Index
Citation Counts
3
1
36
Governance
Public Policy
Regionalism and Development
Rankings
Ranking Based On Selection: 34
Cathy Fussell
Metrics
H-Index
i10 Index
Citation Counts
2
0
6
public administration
value
power
assemblage theory
Deleuze
Rankings
Ranking Based On Selection: 35
Ram Prasad Ghimire
Metrics
H-Index
i10 Index
Citation Counts
2
1
17
Public Policy
Public Administration
Public Sector Reforms
Rankings
Ranking Based On Selection: 36
Isi Unikowski
Metrics
H-Index
i10 Index
Citation Counts
1
0
6
public administration
federalism
intergovernmental relations
intergovernmental management