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
Helen Christensen
Mental health
depression
public health
ehealth and suicide
Metrics
H-Index
i10 Index
Citation
160
554
95,239
* Rankings
Ranking Based On Selection :2
Kaarin Anstey
cognitive health
cognitive decline
dementia risk factors
older drivers
healthy ageing
Metrics
H-Index
i10 Index
Citation
111
458
43,162
* Rankings
Ranking Based On Selection :5
Xiaoqi Feng
Urban Health
Loneliness
Lonelygenic Environments
Nature-Based Social Prescription
Metrics
H-Index
i10 Index
Citation
53
145
15,835
* Rankings
Ranking Based On Selection :6
Holly Seale
Public health
social science
immunization
infectious diseases
infection control
Metrics
H-Index
i10 Index
Citation
53
156
13,124
* Rankings
Ranking Based On Selection :7
Tony Gerard Butler
offender health
prisoner health
mental health
infectious diseases
Metrics
H-Index
i10 Index
Citation
51
156
8,987
* Rankings
Ranking Based On Selection :8
Louisa Jorm
epidemiology
health services research
health information
data linkage
Metrics
H-Index
i10 Index
Citation
48
161
10,288
* Rankings
Ranking Based On Selection :10
David Regan
Computational Epidemiology
Infectious Disease Modelling
Sexually Transmitted Infections
Metrics
H-Index
i10 Index
Citation
38
78
5,026
* Rankings
Ranking Based On Selection :11
Mark J Ferson
Epidemiology and control of infectious diseases
Public health history
Public health law
Bookplates
Art Deco
Metrics
H-Index
i10 Index
Citation
34
80
3,560
* Rankings
Ranking Based On Selection :14
Roslyn Poulos
Public health
Injury prevention
translation of research into policy and practice
Metrics
H-Index
i10 Index
Citation
30
53
3,487
* Rankings
Ranking Based On Selection :15
Maryam Alavi
Epidemiology
People Who Use Drugs
Hepatitis C
Infectious Diseases
Metrics
H-Index
i10 Index
Citation
26
43
1,850
Sally Nathan
Public health
youth
equity
community engagement and participation
Metrics
H-Index
i10 Index
Citation
23
40
1,803
Hossain Mohammad Shahed Sazzad
Emerging and re-emerging diseases
Public Health
Infectious Diseases Epidemiology
Qualitative research
Bioinformatics
Metrics
H-Index
i10 Index
Citation
22
36
2,054
Rona Macniven
Physical activity
public health
Aboriginal and Torres Strait Islander health
Indigenous health
Metrics
H-Index
i10 Index
Citation
22
36
2,454
Anurag Sharma
Health Economics
Health Policy Management
Efficiency Improvement
Prevention
Metrics
H-Index
i10 Index
Citation
19
30
1,525
M Shajedur Rahman Shawon
Cardiovascular Care
Patient Outcomes
Real-world Evidence
Epidemiology
Global Health
Metrics
H-Index
i10 Index
Citation
17
18
10,928
Husna Razee
gender and health
culture and health
social determinants of health
Metrics
H-Index
i10 Index
Citation
17
25
1,376
Amy Bestman
Public Health
Injury prevention
Gambling
Qualitative
Equity
Metrics
H-Index
i10 Index
Citation
16
24
1,193
Damian P Conway
Epidemiology
Population Health
Infectious Diseases
Integrated Care
Multimorbidity
Metrics
H-Index
i10 Index
Citation
14
19
854
Catherine Bateman Steel
public health
global health
maternal health
gender equity
mental health
Metrics
H-Index
i10 Index
Citation
13
14
1,119
A Demirkol
Addictions
Older People and Substance Use
Pain and Addictions
Population Health Approaches to Addictions
Metrics
H-Index
i10 Index
Citation
12
14
1,148
Alexander Voukelatos
Population Health
Epidemiology
Biostatistics
Health Promotion
Injury Prevention
Metrics
H-Index
i10 Index
Citation
9
8
873
Shagoofa Rakhshanda
Public Health
Epidemiology
Non-communicable Diseases
Biostatistics
Bioinformatics
Metrics
H-Index
i10 Index
Citation
7
4
122
Rankings
Ranking Based On Selection: 1
Helen Christensen
Metrics
H-Index
i10 Index
Citation Counts
160
554
95,239
Rankings
Ranking Based On Selection: 2
Kaarin Anstey
Metrics
H-Index
i10 Index
Citation Counts
111
458
43,162
cognitive health
cognitive decline
dementia risk factors
older drivers
healthy ageing
Rankings
Ranking Based On Selection: 3
Rebecca Q Ivers
Metrics
H-Index
i10 Index
Citation Counts
63
250
32,396
Rankings
Ranking Based On Selection: 5
Xiaoqi Feng
Metrics
H-Index
i10 Index
Citation Counts
53
145
15,835
Urban Health
Loneliness
Lonelygenic Environments
Nature-Based Social Prescription
Rankings
Ranking Based On Selection: 6
Holly Seale
Metrics
H-Index
i10 Index
Citation Counts
53
156
13,124
Public health
social science
immunization
infectious diseases
infection control
Rankings
Ranking Based On Selection: 7
Tony Gerard Butler
Metrics
H-Index
i10 Index
Citation Counts
51
156
8,987
offender health
prisoner health
mental health
infectious diseases
Rankings
Ranking Based On Selection: 8
Louisa Jorm
Metrics
H-Index
i10 Index
Citation Counts
48
161
10,288
epidemiology
health services research
health information
data linkage
Rankings
Ranking Based On Selection: 9
Susana Vaz Nery
Metrics
H-Index
i10 Index
Citation Counts
39
69
7,493
Rankings
Ranking Based On Selection: 10
David Regan
Metrics
H-Index
i10 Index
Citation Counts
38
78
5,026
Computational Epidemiology
Infectious Disease Modelling
Sexually Transmitted Infections
Rankings
Ranking Based On Selection: 11
Mark J Ferson
Metrics
H-Index
i10 Index
Citation Counts
34
80
3,560
Epidemiology and control of infectious diseases
Public health history
Public health law
Bookplates
Art Deco
Rankings
Ranking Based On Selection: 12
Evan B Cunningham
Metrics
H-Index
i10 Index
Citation Counts
31
50
5,302
Rankings
Ranking Based On Selection: 13
Siranda Torvaldsen
Metrics
H-Index
i10 Index
Citation Counts
31
55
3,404
Rankings
Ranking Based On Selection: 14
Roslyn Poulos
Metrics
H-Index
i10 Index
Citation Counts
30
53
3,487
Public health
Injury prevention
translation of research into policy and practice
Rankings
Ranking Based On Selection: 15
Maryam Alavi
Metrics
H-Index
i10 Index
Citation Counts
26
43
1,850
Epidemiology
People Who Use Drugs
Hepatitis C
Infectious Diseases
Rankings
Ranking Based On Selection: 16
Blessing Jaka Akombi Inyang
Metrics
H-Index
i10 Index
Citation Counts
25
31
18,026
Rankings
Ranking Based On Selection: 18
Rajneesh Kaur
Metrics
H-Index
i10 Index
Citation Counts
23
39
2,009
Rankings
Ranking Based On Selection: 19
Sally Nathan
Metrics
H-Index
i10 Index
Citation Counts
23
40
1,803
Public health
youth
equity
community engagement and participation
Rankings
Ranking Based On Selection: 20
Hossain Mohammad Shahed Sazzad
Metrics
H-Index
i10 Index
Citation Counts
22
36
2,054
Emerging and re-emerging diseases
Public Health
Infectious Diseases Epidemiology
Qualitative research
Bioinformatics
Rankings
Ranking Based On Selection: 21
Rona Macniven
Metrics
H-Index
i10 Index
Citation Counts
22
36
2,454
Physical activity
public health
Aboriginal and Torres Strait Islander health
Indigenous health
Rankings
Ranking Based On Selection: 23
Samantha Colledge
Metrics
H-Index
i10 Index
Citation Counts
21
25
4,437
Rankings
Ranking Based On Selection: 24
Benjumin Hsu
Metrics
H-Index
i10 Index
Citation Counts
20
30
1,182
Rankings
Ranking Based On Selection: 25
Margo Barr
Metrics
H-Index
i10 Index
Citation Counts
20
26
1,505
Rankings
Ranking Based On Selection: 26
Anurag Sharma
Metrics
H-Index
i10 Index
Citation Counts
19
30
1,525
Health Economics
Health Policy Management
Efficiency Improvement
Prevention
Rankings
Ranking Based On Selection: 27
Claire Wilkinson
Metrics
H-Index
i10 Index
Citation Counts
19
30
2,217
Rankings
Ranking Based On Selection: 28
Bich Tran
Metrics
H-Index
i10 Index
Citation Counts
19
25
1,031
Rankings
Ranking Based On Selection: 29
Wenqiang He
Metrics
H-Index
i10 Index
Citation Counts
18
23
1,228
Rankings
Ranking Based On Selection: 31
M Shajedur Rahman Shawon
Metrics
H-Index
i10 Index
Citation Counts
17
18
10,928
Cardiovascular Care
Patient Outcomes
Real-world Evidence
Epidemiology
Global Health
Rankings
Ranking Based On Selection: 32
Husna Razee
Metrics
H-Index
i10 Index
Citation Counts
17
25
1,376
gender and health
culture and health
social determinants of health
Rankings
Ranking Based On Selection: 33
Paul L Simpson
Metrics
H-Index
i10 Index
Citation Counts
17
27
1,053
Rankings
Ranking Based On Selection: 34
Kathleen Falster
Metrics
H-Index
i10 Index
Citation Counts
17
24
842
Rankings
Ranking Based On Selection: 35
Amy Bestman
Metrics
H-Index
i10 Index
Citation Counts
16
24
1,193
Public Health
Injury prevention
Gambling
Qualitative
Equity
Rankings
Ranking Based On Selection: 36
Melisa Litchfield
Metrics
H-Index
i10 Index
Citation Counts
14
15
1,355
Rankings
Ranking Based On Selection: 37
Damian P Conway
Metrics
H-Index
i10 Index
Citation Counts
14
19
854
Epidemiology
Population Health
Infectious Diseases
Integrated Care
Multimorbidity
Rankings
Ranking Based On Selection: 38
Catherine Bateman Steel
Metrics
H-Index
i10 Index
Citation Counts
13
14
1,119
public health
global health
maternal health
gender equity
mental health
Rankings
Ranking Based On Selection: 39
Armita Adily
Metrics
H-Index
i10 Index
Citation Counts
13
18
862
Rankings
Ranking Based On Selection: 40
Lesley E Halliday
Metrics
H-Index
i10 Index
Citation Counts
13
14
628
Rankings
Ranking Based On Selection: 41
A Demirkol
Metrics
H-Index
i10 Index
Citation Counts
12
14
1,148
Addictions
Older People and Substance Use
Pain and Addictions
Population Health Approaches to Addictions
Rankings
Ranking Based On Selection: 42
Josephine Reyes
Metrics
H-Index
i10 Index
Citation Counts
10
10
412
Health economics
mathematical modelling
infectious diseases
Rankings
Ranking Based On Selection: 43
Alexander Voukelatos
Metrics
H-Index
i10 Index
Citation Counts
9
8
873
Population Health
Epidemiology
Biostatistics
Health Promotion
Injury Prevention
Rankings
Ranking Based On Selection: 44
Shagoofa Rakhshanda
Metrics
H-Index
i10 Index
Citation Counts
7
4
122
Public Health
Epidemiology
Non-communicable Diseases
Biostatistics
Bioinformatics
Rankings
Ranking Based On Selection: 46
Fariha Binte Hossain
Metrics
H-Index
i10 Index
Citation Counts
4
3
186