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" (870,057 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
Allan Wigfield
motivation
self-concept
gender differences
Metrics
H-Index
i10 Index
Citation
104
198
111,151
* Rankings
Ranking Based On Selection: 3
Alireza Khaligh
Power Electronics
Motor Drives
Transportation Electrification
Electric Vehicles
Renewable Energy Systems
Metrics
H-Index
i10 Index
Citation
62
170
19,406
* Rankings
Ranking Based On Selection: 4
John Bertot
E-government
ICT
Information Policy
Library Science
Metrics
H-Index
i10 Index
Citation
55
156
16,457
Jessica N Fish
LGBTQ+ health
adolescent health
substance use
mental health
family
Metrics
H-Index
i10 Index
Citation
45
95
7,644

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* Rankings
Ranking Based On Selection: 15
Hiroyuki Iseki
transportation
land use
travel behavior
transportation finance
sustainable transportation
Metrics
H-Index
i10 Index
Citation
27
40
3,162
* Rankings
Ranking Based On Selection: 16
Mega Subramaniam
Digital youth
Digital literacies
Learning in libraries
Metrics
H-Index
i10 Index
Citation
26
41
2,184
* Rankings
Ranking Based On Selection: 17
Leigh Goodmark
Intimate Partner Violence
Incarceration
Women's Use of Force
Gender
Metrics
H-Index
i10 Index
Citation
25
39
2,837
* Rankings
Ranking Based On Selection: 18
Sarah Oates
political communication
Russian politics
internet and politics
Metrics
H-Index
i10 Index
Citation
25
46
2,733
* Rankings
Ranking Based On Selection: 19
Virginia Ann Haufler
International Relations
International Political Economy
Global Governance
Metrics
H-Index
i10 Index
Citation
25
41
6,373
Beth St Jean
Consumer health information justice
Health information seeking
Information behavior
Metrics
H-Index
i10 Index
Citation
22
36
1,484
William Reed
International Conflict
Civil War
Bargaining
Militarized Disputes
Alliances
Metrics
H-Index
i10 Index
Citation
21
24
2,863
Bennet A Zelner
Strategic Management
Business and Public Policy
Market-oriented Policy Reform
Infrastructure
Metrics
H-Index
i10 Index
Citation
21
27
5,267
Todd Allee
international relations
international organizations
international political economy
territorial disputes
Metrics
H-Index
i10 Index
Citation
20
29
4,051
Taylor M Oshan
Geographic Information Science
Spatial Analysis
Urban Informatics
Spatial Statistics
Computational Social Science
Metrics
H-Index
i10 Index
Citation
18
22
2,486
David Karol
American Politics
Parties
Interest Groups
Institutions
American Political Development
Metrics
H-Index
i10 Index
Citation
17
20
3,673
Vera Mironova
political violence
civil conflict
terrorism
civil wars
international security
Metrics
H-Index
i10 Index
Citation
16
25
1,324
Justin Grimes
information policy
open data
open government
library
information access
Metrics
H-Index
i10 Index
Citation
15
17
6,808
Arefeh A Nasri
Travel behavior
Transit-oriented development
Smart Mobility
Transport Planning
Transport Policy
Metrics
H-Index
i10 Index
Citation
14
18
1,216
John F Mccauley
comparative politics
ethnicity
religion
terrorism
political economy of development
Metrics
H-Index
i10 Index
Citation
14
16
767
* Rankings
Ranking Based On Selection: 44
Andrew K Pace
Libraries
Library Science
Library Automation
Ebooks
Data Science
Metrics
H-Index
i10 Index
Citation
14
14
736
Nancy Hayden
International security
Civil Conflict and Peace Operations
System Dynamics and Socio-ecological Resiliency
Complexity Theory
Metrics
H-Index
i10 Index
Citation
14
17
533
Kaveh Farokhi Sadabadi
Intelligent Transportation Systems
Traffic Flow Theory
Traffic Operations & Monitoring
Traffic Modeling and Control
Metrics
H-Index
i10 Index
Citation
12
16
1,080
Nancy W Gallagher
International Security
arms control and nonproliferation
nuclear policy
space policy
cybersecurity
Metrics
H-Index
i10 Index
Citation
12
17
556
* Rankings
Ranking Based On Selection: 53
Brian Grodsky
Democratization
human rights
social movements
transitional justice
post-communism
Metrics
H-Index
i10 Index
Citation
12
14
490
* Rankings
Ranking Based On Selection: 56
Nick Tomaiuolo
database searching
bibliometrics
information literacy
user-generated content
Metrics
H-Index
i10 Index
Citation
11
12
353
Dylan J Kirsch
Transport Property Measurements
FDTR (Frequency Domain Thermoreflectance)
Combinatorial
Energy
Metrics
H-Index
i10 Index
Citation
9
9
1,768
Ian Anson
Public Opinion
Media & Politics
Inequality
Political Psychology
Scholarship of Teaching & Learning
Metrics
H-Index
i10 Index
Citation
9
8
450
Ann Carlson Weeks
School Libraries
School Library Supervisors
Transforming Communities
Digital Libraries for Children
Metrics
H-Index
i10 Index
Citation
9
9
427
Man Huang
social sciences
consumer behavior
health literacy
Metrics
H-Index
i10 Index
Citation
7
7
519
Daniel C Mack
library administration
collection development
classical antiquities
music
Metrics
H-Index
i10 Index
Citation
7
5
348
Jennifer E Chapman
ethics
legal information systems
info science
legal history
law and society
Metrics
H-Index
i10 Index
Citation
3
1
178
Rankings
Ranking Based On Selection: 1
Allan Wigfield
Metrics
H-Index
i10 Index
Citation Counts
104
198
111,151
motivation
self-concept
gender differences
Rankings
Ranking Based On Selection: 2
Eric M Uslaner
Metrics
H-Index
i10 Index
Citation Counts
63
138
27,546
Rankings
Ranking Based On Selection: 3
Alireza Khaligh
Metrics
H-Index
i10 Index
Citation Counts
62
170
19,406
Power Electronics
Motor Drives
Transportation Electrification
Electric Vehicles
Renewable Energy Systems
Rankings
Ranking Based On Selection: 4
John Bertot
Metrics
H-Index
i10 Index
Citation Counts
55
156
16,457
Rankings
Ranking Based On Selection: 5
Jessica N Fish
Metrics
H-Index
i10 Index
Citation Counts
45
95
7,644
LGBTQ+ health
adolescent health
substance use
mental health
family
Rankings
Ranking Based On Selection: 6
Jerald Hage
Metrics
H-Index
i10 Index
Citation Counts
45
107
26,798
Rankings
Ranking Based On Selection: 7
Ernesto Calvo
Metrics
H-Index
i10 Index
Citation Counts
38
67
7,405
Rankings
Ranking Based On Selection: 9
Mark I Lichbach
Metrics
H-Index
i10 Index
Citation Counts
31
48
8,307
Rankings
Ranking Based On Selection: 10
Cinzia Cirillo
Metrics
H-Index
i10 Index
Citation Counts
30
65
2,770

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
Schwartz Charles W
Metrics
H-Index
i10 Index
Citation Counts
30
59
3,323
Rankings
Ranking Based On Selection: 12
Mansoor Moaddel
Metrics
H-Index
i10 Index
Citation Counts
30
46
3,418
Rankings
Ranking Based On Selection: 13
Betty Malen
Metrics
H-Index
i10 Index
Citation Counts
30
51
4,775
Rankings
Ranking Based On Selection: 14
Joe Oppenheimer
Metrics
H-Index
i10 Index
Citation Counts
28
50
5,678
Rankings
Ranking Based On Selection: 15
Hiroyuki Iseki
Metrics
H-Index
i10 Index
Citation Counts
27
40
3,162
transportation
land use
travel behavior
transportation finance
sustainable transportation
Rankings
Ranking Based On Selection: 16
Mega Subramaniam
Metrics
H-Index
i10 Index
Citation Counts
26
41
2,184
Digital youth
Digital literacies
Learning in libraries
Rankings
Ranking Based On Selection: 17
Leigh Goodmark
Metrics
H-Index
i10 Index
Citation Counts
25
39
2,837
Intimate Partner Violence
Incarceration
Women's Use of Force
Gender
Rankings
Ranking Based On Selection: 18
Sarah Oates
Metrics
H-Index
i10 Index
Citation Counts
25
46
2,733
political communication
Russian politics
internet and politics
Rankings
Ranking Based On Selection: 19
Virginia Ann Haufler
Metrics
H-Index
i10 Index
Citation Counts
25
41
6,373
International Relations
International Political Economy
Global Governance
Rankings
Ranking Based On Selection: 20
Nicholas R Miller
Metrics
H-Index
i10 Index
Citation Counts
24
34
2,795
Formal Political Theory
Social Choice and Voting
Electoral Systems
Rankings
Ranking Based On Selection: 21
Beth St Jean
Metrics
H-Index
i10 Index
Citation Counts
22
36
1,484
Consumer health information justice
Health information seeking
Information behavior
Rankings
Ranking Based On Selection: 22
Irwin Lester Morris
Metrics
H-Index
i10 Index
Citation Counts
22
31
2,104
Rankings
Ranking Based On Selection: 23
Charles E Butterworth
Metrics
H-Index
i10 Index
Citation Counts
22
38
1,857
Rankings
Ranking Based On Selection: 25
William Reed
Metrics
H-Index
i10 Index
Citation Counts
21
24
2,863
International Conflict
Civil War
Bargaining
Militarized Disputes
Alliances
Rankings
Ranking Based On Selection: 26
Bennet A Zelner
Metrics
H-Index
i10 Index
Citation Counts
21
27
5,267
Strategic Management
Business and Public Policy
Market-oriented Policy Reform
Infrastructure
Rankings
Ranking Based On Selection: 27
Todd Allee
Metrics
H-Index
i10 Index
Citation Counts
20
29
4,051
international relations
international organizations
international political economy
territorial disputes
Rankings
Ranking Based On Selection: 28
Scott Kastner
Metrics
H-Index
i10 Index
Citation Counts
20
30
1,993
Rankings
Ranking Based On Selection: 29
Martin O Heisler
Metrics
H-Index
i10 Index
Citation Counts
19
31
1,477
Rankings
Ranking Based On Selection: 30
Taylor M Oshan
Metrics
H-Index
i10 Index
Citation Counts
18
22
2,486
Geographic Information Science
Spatial Analysis
Urban Informatics
Spatial Statistics
Computational Social Science
Rankings
Ranking Based On Selection: 31
David E Cunningham
Metrics
H-Index
i10 Index
Citation Counts
17
22
4,677
Rankings
Ranking Based On Selection: 32
David Karol
Metrics
H-Index
i10 Index
Citation Counts
17
20
3,673
American Politics
Parties
Interest Groups
Institutions
American Political Development
Rankings
Ranking Based On Selection: 33
Robert Koulish
Metrics
H-Index
i10 Index
Citation Counts
17
21
743
Rankings
Ranking Based On Selection: 34
Devin T Hagerty
Metrics
H-Index
i10 Index
Citation Counts
17
21
1,493
Rankings
Ranking Based On Selection: 35
Vera Mironova
Metrics
H-Index
i10 Index
Citation Counts
16
25
1,324
political violence
civil conflict
terrorism
civil wars
international security
Rankings
Ranking Based On Selection: 36
Johanna K Birnir
Metrics
H-Index
i10 Index
Citation Counts
16
18
1,658
Rankings
Ranking Based On Selection: 37
Trevor S Parry Giles
Metrics
H-Index
i10 Index
Citation Counts
15
21
1,039
Rankings
Ranking Based On Selection: 38
Justin Grimes
Metrics
H-Index
i10 Index
Citation Counts
15
17
6,808
information policy
open data
open government
library
information access
Rankings
Ranking Based On Selection: 39
Arefeh A Nasri
Metrics
H-Index
i10 Index
Citation Counts
14
18
1,216
Travel behavior
Transit-oriented development
Smart Mobility
Transport Planning
Transport Policy
Rankings
Ranking Based On Selection: 40
Stella M Rouse
Metrics
H-Index
i10 Index
Citation Counts
14
15
1,116
Rankings
Ranking Based On Selection: 41
Kinjal Nanavati Sethuraman
Metrics
H-Index
i10 Index
Citation Counts
14
19
1,026
Hyperbaric Medicine
Gender Medicine
Gender Equity
Rankings
Ranking Based On Selection: 42
Sarah Croco
Metrics
H-Index
i10 Index
Citation Counts
14
17
1,342
Rankings
Ranking Based On Selection: 43
John F Mccauley
Metrics
H-Index
i10 Index
Citation Counts
14
16
767
comparative politics
ethnicity
religion
terrorism
political economy of development
Rankings
Ranking Based On Selection: 44
Andrew K Pace
Metrics
H-Index
i10 Index
Citation Counts
14
14
736
Libraries
Library Science
Library Automation
Ebooks
Data Science
Rankings
Ranking Based On Selection: 45
Nancy Hayden
Metrics
H-Index
i10 Index
Citation Counts
14
17
533
International security
Civil Conflict and Peace Operations
System Dynamics and Socio-ecological Resiliency
Complexity Theory
Rankings
Ranking Based On Selection: 46
Antoine J Banks
Metrics
H-Index
i10 Index
Citation Counts
13
13
2,407
Race and Politics
Emotion
Public Opinion
Political Psychology
Rankings
Ranking Based On Selection: 47
Patrick C Wohlfarth
Metrics
H-Index
i10 Index
Citation Counts
13
14
1,211
Rankings
Ranking Based On Selection: 48
Isabella Alcaniz
Metrics
H-Index
i10 Index
Citation Counts
12
14
590
Rankings
Ranking Based On Selection: 49
Kaveh Farokhi Sadabadi
Metrics
H-Index
i10 Index
Citation Counts
12
16
1,080
Intelligent Transportation Systems
Traffic Flow Theory
Traffic Operations & Monitoring
Traffic Modeling and Control
Rankings
Ranking Based On Selection: 50
Calvert W Jones
Metrics
H-Index
i10 Index
Citation Counts
12
13
799
Rankings
Ranking Based On Selection: 51
Nancy W Gallagher
Metrics
H-Index
i10 Index
Citation Counts
12
17
556
International Security
arms control and nonproliferation
nuclear policy
space policy
cybersecurity
Rankings
Ranking Based On Selection: 53
Brian Grodsky
Metrics
H-Index
i10 Index
Citation Counts
12
14
490
Democratization
human rights
social movements
transitional justice
post-communism
Rankings
Ranking Based On Selection: 54
Wayne Mcintosh
Metrics
H-Index
i10 Index
Citation Counts
12
17
776
Rankings
Ranking Based On Selection: 55
Gary W White
Metrics
H-Index
i10 Index
Citation Counts
11
11
675
Rankings
Ranking Based On Selection: 56
Nick Tomaiuolo
Metrics
H-Index
i10 Index
Citation Counts
11
12
353
database searching
bibliometrics
information literacy
user-generated content
Rankings
Ranking Based On Selection: 57
Arun Balachandran
Metrics
H-Index
i10 Index
Citation Counts
10
10
2,232
Rankings
Ranking Based On Selection: 58
David Mussington
Metrics
H-Index
i10 Index
Citation Counts
10
10
440
Rankings
Ranking Based On Selection: 59
Dylan J Kirsch
Metrics
H-Index
i10 Index
Citation Counts
9
9
1,768
Transport Property Measurements
FDTR (Frequency Domain Thermoreflectance)
Combinatorial
Energy
Rankings
Ranking Based On Selection: 60
Kristina Miler
Metrics
H-Index
i10 Index
Citation Counts
9
9
707
Rankings
Ranking Based On Selection: 61
Ian Anson
Metrics
H-Index
i10 Index
Citation Counts
9
8
450
Public Opinion
Media & Politics
Inequality
Political Psychology
Scholarship of Teaching & Learning
Rankings
Ranking Based On Selection: 62
Ann Carlson Weeks
Metrics
H-Index
i10 Index
Citation Counts
9
9
427
School Libraries
School Library Supervisors
Transforming Communities
Digital Libraries for Children
Rankings
Ranking Based On Selection: 63
Joannie Tremblay Boire
Metrics
H-Index
i10 Index
Citation Counts
8
8
801
Nonprofits
NGOs
Philanthropy
International Relations
Public Administration
Rankings
Ranking Based On Selection: 64
Man Huang
Metrics
H-Index
i10 Index
Citation Counts
7
7
519
social sciences
consumer behavior
health literacy
Rankings
Ranking Based On Selection: 65
Daniel C Mack
Metrics
H-Index
i10 Index
Citation Counts
7
5
348
library administration
collection development
classical antiquities
music
Rankings
Ranking Based On Selection: 67
Brian Frey
Metrics
H-Index
i10 Index
Citation Counts
5
5
513
Rankings
Ranking Based On Selection: 68
S Suzan Jane Harkness
Metrics
H-Index
i10 Index
Citation Counts
5
5
112
Rankings
Ranking Based On Selection: 69
Jennifer E Chapman
Metrics
H-Index
i10 Index
Citation Counts
3
1
178
ethics
legal information systems
info science
legal history
law and society
Rankings
Ranking Based On Selection: 71
Josue Palacios
Metrics
H-Index
i10 Index
Citation Counts
1
1
43