Citation Rankings
Highly Cited Researchers
Highly Cited Researchers 1.675 Scientists Citation Rankings (Sort by last 6 years Citation Index) - 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.
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 1
Anxiety disorders
Psychiatry in Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
283,647
173,244
0.611
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 2
High Energy Particle Physics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
296,062
111,857
0.378
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 3
cardiology
heart failure
Africa
peripartum
covid
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
149,087
83,809
0.562
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 4
Medicine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
135,675
65,089
0.480
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 5
Paediatric Cardiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
74,628
57,065
0.765
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 6
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
101,138
50,955
0.504
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 7
Physics
Thermal Models
particle Physics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
86,025
36,728
0.427
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 8
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
65,107
36,727
0.564
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 9
Ecology
evolution
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
69,468
26,303
0.379
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 10
physical activity and public health
non-communicable diseases
health behavior change
global south and healthy cities
obesity
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
46,684
25,863
0.554
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 11
pulmonary infections
tuberculosis
diseases of poverty
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
49,277
25,292
0.513
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 12
Respiratory medicine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
69,664
22,311
0.320
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 13
Virology
virus evolution
genetic recombination
geminiviruses
sequence analysis software
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
38,178
20,729
0.543
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 14
astronomy and astrophysics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
57,007
19,614
0.344
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 15
Climate Change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
46,658
16,495
0.354
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 16
Astrophysics
Observational Optical/Infrared/Radio Galaxy Evolution
Cloud Computing
Machine Learning
Statistics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
33,456
13,831
0.413
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 17
climate change
risk
biodiversity
health
sustainability
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,120
13,575
0.961
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 18
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,720
13,230
0.477
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 19
HIV
Tuberculosis
Cryptococcosis
Immune Reconstitution Inflammatory Syndrome
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
26,336
13,022
0.494
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 20
microbiology
pneumonia
tuberculosis
microbiome
diagnostics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,923
12,796
0.494
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 21
epidemiology
biostatistics
HIV
maternal & child health
women's health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
33,465
12,659
0.378
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 22
immunology
tuberculosis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,026
11,973
0.569
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 23
Perioperative Medicine
Anaesthesiology
Epidemiology
Cardiovascular disease
Surgical Morbidity
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,339
11,963
0.690
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 24
hiv
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
22,816
11,706
0.513
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 25
Relativity
cosmology
complexity
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
50,185
11,669
0.233
* Last 6 Years Citation Counts Rankings
Rankings
85
1
1
Ranking Based On Selection: 1
Dan J Stein
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
283,647
173,244
0.611
Anxiety disorders
Psychiatry in Africa
* Last 6 Years Citation Counts Rankings
Rankings
367
2
2
Ranking Based On Selection: 2
Sahal Yacoob
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
296,062
111,857
0.378
* Last 6 Years Citation Counts Rankings
Rankings
957
3
3
Ranking Based On Selection: 3
Karen Sliwa
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
149,087
83,809
0.562
cardiology
heart failure
Africa
peripartum
covid
* Last 6 Years Citation Counts Rankings
Rankings
1,668
5
4
Ranking Based On Selection: 4
Bongani M Mayosi
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
135,675
65,089
0.480
* Last 6 Years Citation Counts Rankings
Rankings
2,076
8
5
Ranking Based On Selection: 5
Liesl Zuhlke
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
74,628
57,065
0.765
Paediatric Cardiology
* Last 6 Years Citation Counts Rankings
Rankings
2,492
10
6
Ranking Based On Selection: 6
Naomi Sharlene Levitt
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
101,138
50,955
0.504
* Last 6 Years Citation Counts Rankings
Rankings
4,257
18
7
Ranking Based On Selection: 7
Jean Cleymans
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
86,025
36,728
0.427
* Last 6 Years Citation Counts Rankings
Rankings
4,259
19
8
Ranking Based On Selection: 8
Heather Zar
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
65,107
36,727
0.564
* Last 6 Years Citation Counts Rankings
Rankings
7,220
27
9
Ranking Based On Selection: 9
William Bond
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
69,468
26,303
0.379
* Last 6 Years Citation Counts Rankings
Rankings
7,408
29
10
Ranking Based On Selection: 10
Estelle Lambert
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
46,684
25,863
0.554
physical activity and public health
non-communicable diseases
health behavior change
global south and healthy cities
obesity
* Last 6 Years Citation Counts Rankings
Rankings
7,686
32
11
Ranking Based On Selection: 11
Keertan Dheda
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
49,277
25,292
0.513
pulmonary infections
tuberculosis
diseases of poverty
* Last 6 Years Citation Counts Rankings
Rankings
9,384
44
12
Ranking Based On Selection: 12
Eric Bateman
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
69,664
22,311
0.320
* Last 6 Years Citation Counts Rankings
Rankings
10,532
46
13
Ranking Based On Selection: 13
Darren Martin
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
38,178
20,729
0.543
Virology
virus evolution
genetic recombination
geminiviruses
sequence analysis software
* Last 6 Years Citation Counts Rankings
Rankings
11,481
49
14
Ranking Based On Selection: 14
TH Jarrett
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
57,007
19,614
0.344
astronomy and astrophysics
* Last 6 Years Citation Counts Rankings
Rankings
14,828
60
15
Ranking Based On Selection: 15
Mark New
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
46,658
16,495
0.354
* Last 6 Years Citation Counts Rankings
Rankings
19,331
74
16
Ranking Based On Selection: 16
Mattia Vaccari
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
33,456
13,831
0.413
Astrophysics
Observational Optical/Infrared/Radio Galaxy Evolution
Cloud Computing
Machine Learning
Statistics
* Last 6 Years Citation Counts Rankings
Rankings
19,861
77
17
Ranking Based On Selection: 17
Christopher Trisos
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,120
13,575
0.961
climate change
risk
biodiversity
health
sustainability
* Last 6 Years Citation Counts Rankings
Rankings
20,664
78
18
Ranking Based On Selection: 18
Dirk Blom
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,720
13,230
0.477
* Last 6 Years Citation Counts Rankings
Rankings
21,197
81
19
Ranking Based On Selection: 19
Graeme Meintjes
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
26,336
13,022
0.494
HIV
Tuberculosis
Cryptococcosis
Immune Reconstitution Inflammatory Syndrome
* Last 6 Years Citation Counts Rankings
Rankings
21,758
85
20
Ranking Based On Selection: 20
Mark Patrick Nicol
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,923
12,796
0.494
microbiology
pneumonia
tuberculosis
microbiome
diagnostics
* Last 6 Years Citation Counts Rankings
Rankings
22,103
86
21
Ranking Based On Selection: 21
Landon Myer
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
33,465
12,659
0.378
epidemiology
biostatistics
HIV
maternal & child health
women's health
* Last 6 Years Citation Counts Rankings
Rankings
24,056
92
22
Ranking Based On Selection: 22
Thomas Scriba
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,026
11,973
0.569
* Last 6 Years Citation Counts Rankings
Rankings
24,093
93
23
Ranking Based On Selection: 23
Bruce Biccard
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,339
11,963
0.690
Perioperative Medicine
Anaesthesiology
Epidemiology
Cardiovascular disease
Surgical Morbidity
* Last 6 Years Citation Counts Rankings
Rankings
24,858
96
24
Ranking Based On Selection: 24
Carolyn Williamson
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
22,816
11,706
0.513
* Last 6 Years Citation Counts Rankings
Rankings
24,972
99
25
Ranking Based On Selection: 25
George FR Ellis
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
50,185
11,669
0.233
Relativity
cosmology
complexity