Citation Rankings
Highly Cited Researchers
Highly Cited Researchers 1.755 Scientists Citation Rankings - 2025
The Citation Rankings (Highly Cited Researchers) list highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the Scientists Last 6 Years Citation Index, Universities Total Citations Rankings 2025, and Universities Last 6 Years Citations Rankings 2025.
* Total Citation Counts Rankings
Ranking Based On Selection: 1
invasion ecology
invasion biology
invasion science
conservation biology
biological invasions
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
101,136
38,338
0.379
* Total Citation Counts Rankings
Ranking Based On Selection: 2
Global Health
Evidence synthesis
Infectious Disease Epidemiology
Vaccinology
HIV
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
71,234
63,265
0.888
* Total Citation Counts Rankings
Ranking Based On Selection: 3
Ecology
conservation Biology
Earth system science
Climate change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
50,239
20,362
0.405
* Total Citation Counts Rankings
Ranking Based On Selection: 4
Epidemiology
Public Health
Infectious Diseases
EHealth
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
37,919
34,070
0.898
* Total Citation Counts Rankings
Ranking Based On Selection: 5
Tuberculosis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
34,767
12,496
0.359
* Total Citation Counts Rankings
Ranking Based On Selection: 6
Swarm Intelligence
Evolutionary Computation
Neural Networks
Optimization
Data Analytics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
32,408
9,552
0.295
* Total Citation Counts Rankings
Ranking Based On Selection: 7
Fluid Mechanics
Thermal Science
Applied Mathematics
Modelling and Computations
BioMathematics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,031
16,448
0.567
* Total Citation Counts Rankings
Ranking Based On Selection: 8
Proteomics
Bioinformatics
Mass Spectrometry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,182
11,563
0.410
* Total Citation Counts Rankings
Ranking Based On Selection: 9
Maternal and child health
life course development
child and adolescent development
global mental health
global health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
26,703
14,670
0.549
* Total Citation Counts Rankings
Ranking Based On Selection: 10
Insect conservation
invertebrate conservation
conservation biology
landscape ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,903
10,394
0.401
* Total Citation Counts Rankings
Ranking Based On Selection: 11
Applied ecology
fire ecology
invasion ecology
ecosystem management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,316
8,381
0.331
* Total Citation Counts Rankings
Ranking Based On Selection: 12
Medical Virology
HIV
Virological Diagnosis
Emerging viral diseases
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,164
15,070
0.599
* Total Citation Counts Rankings
Ranking Based On Selection: 13
Public Health: infectious disease epidemiology
evidence synthesis
vaccine implementation research
antimicrobial resistance
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
24,856
24,641
0.991
* Total Citation Counts Rankings
Ranking Based On Selection: 14
Compulsivity
impulsivity
behavioural addictions
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
24,194
16,214
0.670
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Bioinformatics
statistics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
22,609
7,518
0.333
* Total Citation Counts Rankings
Ranking Based On Selection: 16
Disability studies
public mental health
cultural aspects of health care
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,839
9,784
0.448
* Total Citation Counts Rankings
Ranking Based On Selection: 17
Tuberculosis
Immunology
Biomarkers
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,538
10,071
0.468
* Total Citation Counts Rankings
Ranking Based On Selection: 18
HIV
infectious diseases
children
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,433
7,305
0.341
* Total Citation Counts Rankings
Ranking Based On Selection: 19
Yeast Biotechnology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,791
5,392
0.259
* Total Citation Counts Rankings
Ranking Based On Selection: 20
Human genetics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,550
6,056
0.295
* Total Citation Counts Rankings
Ranking Based On Selection: 21
Microbiology
lactic acid bacteria
antimicrobial peptides
bacteriocins
probiotics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,884
7,304
0.367
* Total Citation Counts Rankings
Ranking Based On Selection: 22
Ecology
Invasion Science
Biological Invasions
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,864
10,819
0.545
* Total Citation Counts Rankings
Ranking Based On Selection: 23
Postharvest Technology
Food Science and Technology
Biosystems Engineering
Horticultural Science
Pomegranate
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,584
13,197
0.674
* Total Citation Counts Rankings
Ranking Based On Selection: 24
Philosophy and methodology of the social sciences
higher education knowledge production
sociology of science
scientometrics a
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,554
5,022
0.257
* Total Citation Counts Rankings
Ranking Based On Selection: 25
supramolecular chemistry
crystal engineering
materials chemistry
solid-state chemistry
porous materials
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,394
4,427
0.228
* Total Citation Counts Rankings
Rankings
3,151
9
1
Ranking Based On Selection: 1
David M. Richardson
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
101,136
38,338
0.379
invasion ecology
invasion biology
invasion science
conservation biology
biological invasions
* Total Citation Counts Rankings
Rankings
5,810
16
2
Ranking Based On Selection: 2
Ola Adetokunboh Md
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
71,234
63,265
0.888
Global Health
Evidence synthesis
Infectious Disease Epidemiology
Vaccinology
HIV
* Total Citation Counts Rankings
Rankings
10,200
28
3
Ranking Based On Selection: 3
Guy Midgley
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
50,239
20,362
0.405
Ecology
conservation Biology
Earth system science
Climate change
* Total Citation Counts Rankings
Rankings
15,992
47
4
Ranking Based On Selection: 4
Peter Nyasulumed Mace
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
37,919
34,070
0.898
Epidemiology
Public Health
Infectious Diseases
EHealth
* Total Citation Counts Rankings
Rankings
18,280
50
5
Ranking Based On Selection: 5
Robin M Warren
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
34,767
12,496
0.359
* Total Citation Counts Rankings
Rankings
20,380
57
6
Ranking Based On Selection: 6
Andries Engelbrecht
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
32,408
9,552
0.295
Swarm Intelligence
Evolutionary Computation
Neural Networks
Optimization
Data Analytics
* Total Citation Counts Rankings
Rankings
24,205
68
7
Ranking Based On Selection: 7
OD Makinde
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,031
16,448
0.567
Fluid Mechanics
Thermal Science
Applied Mathematics
Modelling and Computations
BioMathematics
* Total Citation Counts Rankings
Rankings
25,259
72
8
Ranking Based On Selection: 8
David L. Tabb
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,182
11,563
0.410
Proteomics
Bioinformatics
Mass Spectrometry
* Total Citation Counts Rankings
Rankings
27,434
76
9
Ranking Based On Selection: 9
Mark Tomlinson
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
26,703
14,670
0.549
Maternal and child health
life course development
child and adolescent development
global mental health
global health
* Total Citation Counts Rankings
Rankings
28,686
86
10
Ranking Based On Selection: 10
Michael J. Samways
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,903
10,394
0.401
Insect conservation
invertebrate conservation
conservation biology
landscape ecology
* Total Citation Counts Rankings
Rankings
29,684
90
11
Ranking Based On Selection: 11
Brian W. Van Wilgen
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,316
8,381
0.331
Applied ecology
fire ecology
invasion ecology
ecosystem management
* Total Citation Counts Rankings
Rankings
29,980
92
12
Ranking Based On Selection: 12
Wolfgang Preiser
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,164
15,070
0.599
Medical Virology
HIV
Virological Diagnosis
Emerging viral diseases
* Total Citation Counts Rankings
Rankings
30,529
94
13
Ranking Based On Selection: 13
Chinwe Iwu
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
24,856
24,641
0.991
Public Health: infectious disease epidemiology
evidence synthesis
vaccine implementation research
antimicrobial resistance
* Total Citation Counts Rankings
Rankings
31,716
101
14
Ranking Based On Selection: 14
Christine Lochner
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
24,194
16,214
0.670
Compulsivity
impulsivity
behavioural addictions
* Total Citation Counts Rankings
Rankings
34,916
109
15
Ranking Based On Selection: 15
Gerard Tromp
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
22,609
7,518
0.333
* Total Citation Counts Rankings
Rankings
36,678
111
16
Ranking Based On Selection: 16
Leslie Swartz
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,839
9,784
0.448
Disability studies
public mental health
cultural aspects of health care
* Total Citation Counts Rankings
Rankings
37,394
115
17
Ranking Based On Selection: 17
Gerhard Walzl
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,538
10,071
0.468
Tuberculosis
Immunology
Biomarkers
* Total Citation Counts Rankings
Rankings
37,667
116
18
Ranking Based On Selection: 18
Mark Cotton
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,433
7,305
0.341
HIV
infectious diseases
children
* Total Citation Counts Rankings
Rankings
39,355
122
19
Ranking Based On Selection: 19
Willem Heber (Emile) Van Zyl
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,791
5,392
0.259
* Total Citation Counts Rankings
Rankings
40,019
125
20
Ranking Based On Selection: 20
Helena Kuivaniemi
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,550
6,056
0.295
* Total Citation Counts Rankings
Rankings
41,813
132
21
Ranking Based On Selection: 21
Leon MT Dicks
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,884
7,304
0.367
Microbiology
lactic acid bacteria
antimicrobial peptides
bacteriocins
probiotics
* Total Citation Counts Rankings
Rankings
41,876
133
22
Ranking Based On Selection: 22
John Wilson
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,864
10,819
0.545
Ecology
Invasion Science
Biological Invasions
* Total Citation Counts Rankings
Rankings
42,658
135
23
Ranking Based On Selection: 23
Umezuruike Linus Opara
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,584
13,197
0.674
Postharvest Technology
Food Science and Technology
Biosystems Engineering
Horticultural Science
Pomegranate
* Total Citation Counts Rankings
Rankings
42,748
136
24
Ranking Based On Selection: 24
Johann Mouton
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,554
5,022
0.257
Philosophy and methodology of the social sciences
higher education knowledge production
sociology of science
scientometrics a
* Total Citation Counts Rankings
Rankings
43,219
138
25
Ranking Based On Selection: 25
Len Barbour
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,394
4,427
0.228
supramolecular chemistry
crystal engineering
materials chemistry
solid-state chemistry
porous materials