Citation Rankings
Highly Cited Researchers
University of the Witwatersrand Highly Cited Researchers Citation Rankings 2025
The Citation Rankings (Highly Cited Researchers) 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 :26
Astrophysics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,351
16,093
0.984
* Total Citation Counts Rankings
Ranking Based On Selection :27
electric machines
motors
renewable energy
power systems
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,340
8,214
0.503
* Total Citation Counts Rankings
Ranking Based On Selection :28
sleep
thermoregulation
brain
alcohol
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,288
12,400
0.761
* Total Citation Counts Rankings
Ranking Based On Selection :29
Targeted Drug Delivery
Nanomedicines
Stimuli-Responsive Biomaterials
Molecular Pharma-Engineered Regenerative Medicines
Drug
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,036
10,111
0.672
* Total Citation Counts Rankings
Ranking Based On Selection :30
Savanna ecology
global change
fire ecology
vegetation dynamics
earth-system feedbacks
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,345
9,030
0.629
* Total Citation Counts Rankings
Ranking Based On Selection :31
Cell death
Apoptosis
Cancer
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,311
6,782
0.474
* Total Citation Counts Rankings
Ranking Based On Selection :32
Control Theory
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,004
7,362
0.526
* Total Citation Counts Rankings
Ranking Based On Selection :33
Public Health
demography
epidemiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,576
4,409
0.325
* Total Citation Counts Rankings
Ranking Based On Selection :34
Forensic anthropology
biological anthropology
skeletal biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,572
5,075
0.374
* Total Citation Counts Rankings
Ranking Based On Selection :35
Plant ecology
plant ecophysiology
conservation biology
invasion biology
ethnoecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,431
4,725
0.352
* Total Citation Counts Rankings
Ranking Based On Selection :36
sedimentology
vertebrate palaeontology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,815
5,335
0.416
* Total Citation Counts Rankings
Ranking Based On Selection :37
Conservation physiology
thermal physiology
pain physiology
fever physiology
sleep physiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,618
4,047
0.321
* Total Citation Counts Rankings
Ranking Based On Selection :38
Biomaterials
Neuromaterials
Pharmaceutical Sciences
Regenerative Medicine
Neurotrauma
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,281
9,060
0.738
* Total Citation Counts Rankings
Ranking Based On Selection :39
Infectious diseases
Vaccines
Public health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,149
10,168
0.837
* Total Citation Counts Rankings
Ranking Based On Selection :40
Electrochemistry
Batteries
Fuel Cells
Electrolyzers
Sensors
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,795
5,851
0.496
* Total Citation Counts Rankings
Ranking Based On Selection :41
Geology
Petrology
Geochemistry
Tectonics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,715
3,820
0.326
* Total Citation Counts Rankings
Ranking Based On Selection :42
Immunology
Epidemiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,706
11,354
0.970
* Total Citation Counts Rankings
Ranking Based On Selection :43
Pharmaceutical Sciences
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,584
7,433
0.642
* Total Citation Counts Rankings
Ranking Based On Selection :44
health sciences
virology
respiratory viruses
HIV
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,551
9,406
0.814
* Total Citation Counts Rankings
Ranking Based On Selection :45
palaeoanthropology
archaeology
taphonomy
exploration
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,413
4,959
0.435
* Total Citation Counts Rankings
Ranking Based On Selection :46
Microbiology
Infectious Diseases
IPC
EVD
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,294
5,322
0.517
* Total Citation Counts Rankings
Ranking Based On Selection :47
palaeontology
geology
stratigraphy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,183
4,108
0.403
* Total Citation Counts Rankings
Ranking Based On Selection :48
Language education
literacy education
critical literacy
discourse analysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,778
4,999
0.511
* Total Citation Counts Rankings
Ranking Based On Selection :49
tissue regeneration
bone induction
hydroxyapatites
self-induction
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,718
1,762
0.181
* Total Citation Counts Rankings
Ranking Based On Selection :50
sports medicine
concussion
tendinopathy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,276
7,702
0.830
* Total Citation Counts Rankings
Rankings
53,231
174
26
Ranking Based On Selection: 26
Roger Deane
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,351
16,093
0.984
* Total Citation Counts Rankings
Rankings
53,293
175
27
Ranking Based On Selection: 27
David Dorrell
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,340
8,214
0.503
electric machines
motors
renewable energy
power systems
* Total Citation Counts Rankings
Rankings
53,540
176
28
Ranking Based On Selection: 28
Fiona Baker
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,288
12,400
0.761
* Total Citation Counts Rankings
Rankings
59,606
201
29
Ranking Based On Selection: 29
Yahya E. Choonara
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,036
10,111
0.672
Targeted Drug Delivery
Nanomedicines
Stimuli-Responsive Biomaterials
Molecular Pharma-Engineered Regenerative Medicines
Drug
* Total Citation Counts Rankings
Rankings
63,330
216
30
Ranking Based On Selection: 30
Sally Archibald
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,345
9,030
0.629
Savanna ecology
global change
fire ecology
vegetation dynamics
earth-system feedbacks
* Total Citation Counts Rankings
Rankings
63,530
219
31
Ranking Based On Selection: 31
Marianne Cronje
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,311
6,782
0.474
* Total Citation Counts Rankings
Rankings
65,402
223
32
Ranking Based On Selection: 32
Bao-Zhu Guo
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,004
7,362
0.526
* Total Citation Counts Rankings
Rankings
68,086
230
33
Ranking Based On Selection: 33
Stephen Tollman
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,576
4,409
0.325
Public Health
demography
epidemiology
* Total Citation Counts Rankings
Rankings
68,110
231
34
Ranking Based On Selection: 34
Maryna Steyn
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,572
5,075
0.374
Forensic anthropology
biological anthropology
skeletal biology
* Total Citation Counts Rankings
Rankings
69,000
235
35
Ranking Based On Selection: 35
ETF Witkowski
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,431
4,725
0.352
Plant ecology
plant ecophysiology
conservation biology
invasion biology
ethnoecology
* Total Citation Counts Rankings
Rankings
73,255
244
36
Ranking Based On Selection: 36
Roger MH Smith
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,815
5,335
0.416
sedimentology
vertebrate palaeontology
* Total Citation Counts Rankings
Rankings
74,717
250
37
Ranking Based On Selection: 37
Duncan Mitchell
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,618
4,047
0.321
Conservation physiology
thermal physiology
pain physiology
fever physiology
sleep physiology
* Total Citation Counts Rankings
Rankings
77,125
261
38
Ranking Based On Selection: 38
Pradeep Kumar
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,281
9,060
0.738
Biomaterials
Neuromaterials
Pharmaceutical Sciences
Regenerative Medicine
Neurotrauma
* Total Citation Counts Rankings
Rankings
78,154
266
39
Ranking Based On Selection: 39
Michelle Groome
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,149
10,168
0.837
Infectious diseases
Vaccines
Public health
* Total Citation Counts Rankings
Rankings
81,009
276
40
Ranking Based On Selection: 40
Kenneth Ikechukwu Ozoemena
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,795
5,851
0.496
Electrochemistry
Batteries
Fuel Cells
Electrolyzers
Sensors
* Total Citation Counts Rankings
Rankings
81,678
280
41
Ranking Based On Selection: 41
Lewis Ashwal
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,715
3,820
0.326
Geology
Petrology
Geochemistry
Tectonics
* Total Citation Counts Rankings
Rankings
81,759
281
42
Ranking Based On Selection: 42
Gaurav Kwatra
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,706
11,354
0.970
* Total Citation Counts Rankings
Rankings
82,904
286
43
Ranking Based On Selection: 43
Lisa Du Toit
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,584
7,433
0.642
Pharmaceutical Sciences
* Total Citation Counts Rankings
Rankings
83,191
287
44
Ranking Based On Selection: 44
Florette Treurnicht
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,551
9,406
0.814
health sciences
virology
respiratory viruses
HIV
* Total Citation Counts Rankings
Rankings
84,312
290
45
Ranking Based On Selection: 45
Lee Berger
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,413
4,959
0.435
palaeoanthropology
archaeology
taphonomy
exploration
* Total Citation Counts Rankings
Rankings
95,293
339
46
Ranking Based On Selection: 46
Adriano Duse
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,294
5,322
0.517
Microbiology
Infectious Diseases
IPC
EVD
* Total Citation Counts Rankings
Rankings
96,505
342
47
Ranking Based On Selection: 47
Bruce S. Rubidge
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,183
4,108
0.403
palaeontology
geology
stratigraphy
* Total Citation Counts Rankings
Rankings
101,028
362
48
Ranking Based On Selection: 48
Hilary Janks
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,778
4,999
0.511
Language education
literacy education
critical literacy
discourse analysis
* Total Citation Counts Rankings
Rankings
101,741
365
49
Ranking Based On Selection: 49
Ugo Ripamonti
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,718
1,762
0.181
tissue regeneration
bone induction
hydroxyapatites
self-induction
* Total Citation Counts Rankings
Rankings
107,343
388
50
Ranking Based On Selection: 50
Patricios J
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,276
7,702
0.830
sports medicine
concussion
tendinopathy