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
Abhishek Kumar Dubey
Demography
Public health
Quantitative research
Metrics
H-Index
i10 Index
Citation
47
230
10,368
* Rankings
Ranking Based On Selection: 4
Julie Pulerwitz
hiv and aids
violence
gender
stigma
health behaviors
Metrics
H-Index
i10 Index
Citation
43
77
7,644
* Rankings
Ranking Based On Selection: 6
Timothy Abuya
Implementation Research-Health Sytems
Health Policy and Health Care financing
Metrics
H-Index
i10 Index
Citation
36
71
4,510
* Rankings
Ranking Based On Selection: 7
Leiwen Jiang
Population and Environment
Demographic Modeling
Climate Change
Urbanization and Migration
Household Consumption
Metrics
H-Index
i10 Index
Citation
33
60
12,846
* Rankings
Ranking Based On Selection: 8
Thoai Ngo
Gender Norms
Adolescents
Sexual and Reproductive Health
Poverty Alleviation
Global Health
Metrics
H-Index
i10 Index
Citation
31
62
3,490
* Rankings
Ranking Based On Selection: 9
Sangram Kishor Patel
Public Health
Human Development
Gender
RMNCH+A
Climate Change Adaptation
Metrics
H-Index
i10 Index
Citation
30
46
28,674
* Rankings
Ranking Based On Selection: 10
Sylvia Adebajo
Epidemiology
HIV
Prevention
Public Health
Vulnerable groups
Metrics
H-Index
i10 Index
Citation
30
54
2,990

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* Rankings
Ranking Based On Selection: 11
Jerry Okal
Public Health
Sexual and Reproductive Health and HIV among underserved communities and key population groups
Metrics
H-Index
i10 Index
Citation
30
41
2,368
* Rankings
Ranking Based On Selection: 12
Bidhubhusan Mahapatra
Humanitarian Research
Public Health
Livelihoods
Poverty
Program Evaluation
Metrics
H-Index
i10 Index
Citation
27
47
2,330
* Rankings
Ranking Based On Selection: 13
Kelly K Hallman|Kelly Hallman, K Hallman, KK Hallman
adolescent mental health
Native American justice
gender justice
girls' empowerment
social & health equity
Metrics
H-Index
i10 Index
Citation
26
36
2,917
* Rankings
Ranking Based On Selection: 14
Nagavendra Kommineni
Pharmaceutics
Sterile Product development
Oral drug delivery
Topical and Transdermal delivery
Exosomal delivery of small mol
Metrics
H-Index
i10 Index
Citation
25
44
4,599
* Rankings
Ranking Based On Selection: 15
Karen Austrian
Adolescent girls
adolescent health
multi-sectoral interventions
Metrics
H-Index
i10 Index
Citation
23
44
1,939
* Rankings
Ranking Based On Selection: 16
Sanyukta Mathur
Implementation Science
HIV and AIDS
sexual and reproductive health
gender and rights
choice and equity
Metrics
H-Index
i10 Index
Citation
22
39
2,283
* Rankings
Ranking Based On Selection: 17
Arupendra Mozumdar
Reproductive Health
Family Planning
Biological Anthropology
Metrics
H-Index
i10 Index
Citation
21
35
1,966
* Rankings
Ranking Based On Selection: 19
Chi-Chi Undie
sexuality
sexual and reproductive health
gender
Metrics
H-Index
i10 Index
Citation
19
30
1,317
* Rankings
Ranking Based On Selection: 20
Dennis Matanda
Maternal and Child Health
Metrics
H-Index
i10 Index
Citation
18
24
726
* Rankings
Ranking Based On Selection: 24
Osasuyi Dirisu
Social Policy
Gender and Social Inclusion
Governance
Health Systems
Metrics
H-Index
i10 Index
Citation
13
14
449
* Rankings
Ranking Based On Selection: 25
Leanne Dougherty
Global Health
Implementation Science
Behavior Change
Maternal and Child Health
Immunizations
Metrics
H-Index
i10 Index
Citation
13
15
514
* Rankings
Ranking Based On Selection: 26
Shongkour Roy
Epidemiology
Public Health
Statistics
MNCH
Metrics
H-Index
i10 Index
Citation
11
11
318
* Rankings
Ranking Based On Selection: 27
Kathryn Spielman
Global nutrition
maternal and child health
global mental health
Metrics
H-Index
i10 Index
Citation
10
10
539
Hamidreza Zoraghein
Spatial Data Science
Population Modeling
Human-Environment Dynamics
Urbanization Analysis
Metrics
H-Index
i10 Index
Citation
9
9
328
Silvana Larrea
Public Health
migration and health
sexual and reproductive health
Metrics
H-Index
i10 Index
Citation
3
2
37
Shikha Bhasin
RMNCH
Health System Strengthening
Metrics
H-Index
i10 Index
Citation
3
1
23
Nidhi Khurana
global health
health policy
health systems
road safety
sanitation
Metrics
H-Index
i10 Index
Citation
2
1
63
Trisha Chaudhuri
Computational Social Science
Economics
Data Science
Metrics
H-Index
i10 Index
Citation
2
0
16
Rankings
Ranking Based On Selection: 1
John Bongaarts
Metrics
H-Index
i10 Index
Citation Counts
86
194
33,619
Rankings
Ranking Based On Selection: 2
Abhishek Kumar Dubey
Metrics
H-Index
i10 Index
Citation Counts
47
230
10,368
Demography
Public health
Quantitative research
Rankings
Ranking Based On Selection: 3
Niranjan Saggurti
Metrics
H-Index
i10 Index
Citation Counts
46
139
7,713
Rankings
Ranking Based On Selection: 4
Julie Pulerwitz
Metrics
H-Index
i10 Index
Citation Counts
43
77
7,644
hiv and aids
violence
gender
stigma
health behaviors
Rankings
Ranking Based On Selection: 5
Anrudh Jain
Metrics
H-Index
i10 Index
Citation Counts
43
94
5,691
Rankings
Ranking Based On Selection: 6
Timothy Abuya
Metrics
H-Index
i10 Index
Citation Counts
36
71
4,510
Implementation Research-Health Sytems
Health Policy and Health Care financing
Rankings
Ranking Based On Selection: 7
Leiwen Jiang
Metrics
H-Index
i10 Index
Citation Counts
33
60
12,846
Population and Environment
Demographic Modeling
Climate Change
Urbanization and Migration
Household Consumption
Rankings
Ranking Based On Selection: 8
Thoai Ngo
Metrics
H-Index
i10 Index
Citation Counts
31
62
3,490
Gender Norms
Adolescents
Sexual and Reproductive Health
Poverty Alleviation
Global Health
Rankings
Ranking Based On Selection: 9
Sangram Kishor Patel
Metrics
H-Index
i10 Index
Citation Counts
30
46
28,674
Public Health
Human Development
Gender
RMNCH+A
Climate Change Adaptation
Rankings
Ranking Based On Selection: 10
Sylvia Adebajo
Metrics
H-Index
i10 Index
Citation Counts
30
54
2,990
Epidemiology
HIV
Prevention
Public Health
Vulnerable groups

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
Jerry Okal
Metrics
H-Index
i10 Index
Citation Counts
30
41
2,368
Public Health
Sexual and Reproductive Health and HIV among underserved communities and key population groups
Rankings
Ranking Based On Selection: 12
Bidhubhusan Mahapatra
Metrics
H-Index
i10 Index
Citation Counts
27
47
2,330
Humanitarian Research
Public Health
Livelihoods
Poverty
Program Evaluation
Rankings
Ranking Based On Selection: 13
Kelly K Hallman|Kelly Hallman, K Hallman, KK Hallman
Metrics
H-Index
i10 Index
Citation Counts
26
36
2,917
adolescent mental health
Native American justice
gender justice
girls' empowerment
social & health equity
Rankings
Ranking Based On Selection: 14
Nagavendra Kommineni
Metrics
H-Index
i10 Index
Citation Counts
25
44
4,599
Pharmaceutics
Sterile Product development
Oral drug delivery
Topical and Transdermal delivery
Exosomal delivery of small mol
Rankings
Ranking Based On Selection: 15
Karen Austrian
Metrics
H-Index
i10 Index
Citation Counts
23
44
1,939
Adolescent girls
adolescent health
multi-sectoral interventions
Rankings
Ranking Based On Selection: 16
Sanyukta Mathur
Metrics
H-Index
i10 Index
Citation Counts
22
39
2,283
Implementation Science
HIV and AIDS
sexual and reproductive health
gender and rights
choice and equity
Rankings
Ranking Based On Selection: 17
Arupendra Mozumdar
Metrics
H-Index
i10 Index
Citation Counts
21
35
1,966
Reproductive Health
Family Planning
Biological Anthropology
Rankings
Ranking Based On Selection: 18
Pooja Sripad
Metrics
H-Index
i10 Index
Citation Counts
19
32
1,700
Rankings
Ranking Based On Selection: 19
Chi-Chi Undie
Metrics
H-Index
i10 Index
Citation Counts
19
30
1,317
sexuality
sexual and reproductive health
gender
Rankings
Ranking Based On Selection: 20
Dennis Matanda
Metrics
H-Index
i10 Index
Citation Counts
18
24
726
Maternal and Child Health
Rankings
Ranking Based On Selection: 21
Aparna Jain
Metrics
H-Index
i10 Index
Citation Counts
18
36
1,166
Rankings
Ranking Based On Selection: 22
Fermin Herrera Aragón
Metrics
H-Index
i10 Index
Citation Counts
17
24
877
Rankings
Ranking Based On Selection: 23
Sharif Hossain
Metrics
H-Index
i10 Index
Citation Counts
15
33
975
Rankings
Ranking Based On Selection: 24
Osasuyi Dirisu
Metrics
H-Index
i10 Index
Citation Counts
13
14
449
Social Policy
Gender and Social Inclusion
Governance
Health Systems
Rankings
Ranking Based On Selection: 25
Leanne Dougherty
Metrics
H-Index
i10 Index
Citation Counts
13
15
514
Global Health
Implementation Science
Behavior Change
Maternal and Child Health
Immunizations
Rankings
Ranking Based On Selection: 26
Shongkour Roy
Metrics
H-Index
i10 Index
Citation Counts
11
11
318
Epidemiology
Public Health
Statistics
MNCH
Rankings
Ranking Based On Selection: 27
Kathryn Spielman
Metrics
H-Index
i10 Index
Citation Counts
10
10
539
Global nutrition
maternal and child health
global mental health
Rankings
Ranking Based On Selection: 28
Elizabeth Tobey
Metrics
H-Index
i10 Index
Citation Counts
10
10
272
Rankings
Ranking Based On Selection: 29
Md Irfan Hossain
Metrics
H-Index
i10 Index
Citation Counts
10
10
286
Rankings
Ranking Based On Selection: 30
Hamidreza Zoraghein
Metrics
H-Index
i10 Index
Citation Counts
9
9
328
Spatial Data Science
Population Modeling
Human-Environment Dynamics
Urbanization Analysis
Rankings
Ranking Based On Selection: 31
Sohini Paul
Metrics
H-Index
i10 Index
Citation Counts
9
9
311
Rankings
Ranking Based On Selection: 32
Neeharika Verma
Metrics
H-Index
i10 Index
Citation Counts
4
4
144
Rankings
Ranking Based On Selection: 33
Clement Haeck
Metrics
H-Index
i10 Index
Citation Counts
4
1
150
Rankings
Ranking Based On Selection: 34
Silvana Larrea
Metrics
H-Index
i10 Index
Citation Counts
3
2
37
Public Health
migration and health
sexual and reproductive health
Rankings
Ranking Based On Selection: 35
Fatima Zahra
Metrics
H-Index
i10 Index
Citation Counts
3
2
32
Rankings
Ranking Based On Selection: 36
Shikha Bhasin
Metrics
H-Index
i10 Index
Citation Counts
3
1
23
RMNCH
Health System Strengthening
Rankings
Ranking Based On Selection: 37
John Bongaarts
Metrics
H-Index
i10 Index
Citation Counts
3
3
215
Rankings
Ranking Based On Selection: 38
Nidhi Khurana
Metrics
H-Index
i10 Index
Citation Counts
2
1
63
global health
health policy
health systems
road safety
sanitation
Rankings
Ranking Based On Selection: 39
Trisha Chaudhuri
Metrics
H-Index
i10 Index
Citation Counts
2
0
16
Computational Social Science
Economics
Data Science
Rankings
Ranking Based On Selection: 40
Aileen Marshall
Metrics
H-Index
i10 Index
Citation Counts
1
0
10