Citation Rankings
Highly Cited Researchers
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 :1
HEP
LHC
ATLAS
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
138,607
96,600
0.697
* Total Citation Counts Rankings
Ranking Based On Selection :2
Nuclear Physics
Particle Physics
Diamond Physics
Quantum Physics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
79,483
41,470
0.522
* Total Citation Counts Rankings
Ranking Based On Selection :3
Astroparticle Physics
High Energy Astrophysics
Gamma-ray Astronomy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45,387
21,546
0.475
* Total Citation Counts Rankings
Ranking Based On Selection :4
isotope geochemistry
geochronology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,467
8,182
0.278
* Total Citation Counts Rankings
Ranking Based On Selection :5
Tourism and Development
Local Economic Development
Small Enterprise Development
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
24,990
10,520
0.421
* Total Citation Counts Rankings
Ranking Based On Selection :6
Social psychology
race and ethnic studies
research methods
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
22,458
8,781
0.391
* Total Citation Counts Rankings
Ranking Based On Selection :7
Graph Theory
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,395
9,330
0.436
* Total Citation Counts Rankings
Ranking Based On Selection :8
Taxonomy
Ethnobotany
Medicinal plants
Apiaceae
Umbelliferae
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,984
8,143
0.407
* Total Citation Counts Rankings
Ranking Based On Selection :9
Economic Geology
Iron and manganese deposits
Precambrian geology
Sedimentology and basin analyses.
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,873
7,016
0.372
* Total Citation Counts Rankings
Ranking Based On Selection :10
political economy
political ecology
geography
social movements
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,799
5,196
0.309
* Total Citation Counts Rankings
Ranking Based On Selection :11
Photobiology
Photochemistry
Photodynamic therapy
Wound healing
Stem cells
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,983
11,461
0.717
* Total Citation Counts Rankings
Ranking Based On Selection :12
Building
Construction Digitalisation
Value Management
Quantity Surveying
Construction Industry Development
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,656
11,980
0.947
* Total Citation Counts Rankings
Ranking Based On Selection :13
Artificial Intelligence
AI Governance
Policy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,386
6,281
0.507
* Total Citation Counts Rankings
Ranking Based On Selection :14
thermal science
additive manufacturing
Atomic Layer Deposition
Cold Gas Dynamic Spraying
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,358
7,103
0.759
* Total Citation Counts Rankings
Ranking Based On Selection :15
Archaean geology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,017
5,499
0.610
* Total Citation Counts Rankings
Ranking Based On Selection :16
Biochemistry and Molecular biology
Plant-microbe interactions
Innate immunity
Metabolomics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,855
4,811
0.543
* Total Citation Counts Rankings
Ranking Based On Selection :17
sustainability engineering
biogas
LCA
Future Technologies
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,808
6,968
0.791
* Total Citation Counts Rankings
Ranking Based On Selection :18
Stone Age archaeology
human behavioural and cognitive evolution
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,053
4,264
0.529
* Total Citation Counts Rankings
Ranking Based On Selection :19
igneous petrology
isotope geochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,960
4,020
0.505
* Total Citation Counts Rankings
Ranking Based On Selection :20
Spark Plasma Sintering
Additive Manufacturing
Nanoindentation
Tribocorrosion
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,953
6,469
0.813
* Total Citation Counts Rankings
Ranking Based On Selection :21
astronomy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,911
5,417
0.685
* Total Citation Counts Rankings
Ranking Based On Selection :22
Electrochemistry
electrochemical biosensors
electrochemical sensors
photoelectrochemistry
water treatment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,896
6,006
0.761
* Total Citation Counts Rankings
Ranking Based On Selection :23
Organisational Behaviour
Psychology assessment
Research methodology
Organisational development
Social sciences
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,885
3,888
0.493
* Total Citation Counts Rankings
Ranking Based On Selection :24
mechanical engineering
aerodynamics
renewable energy
materials
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,030
3,265
0.464
* Total Citation Counts Rankings
Ranking Based On Selection :25
Information Cyber Security
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,941
2,317
0.334
* Total Citation Counts Rankings
Rankings
1,659
5
1
Ranking Based On Selection: 1
Loan Truong
University of Johannesburg
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
138,607
96,600
0.697
* Total Citation Counts Rankings
Rankings
4,695
12
2
Ranking Based On Selection: 2
Simon Connell
University of Johannesburg
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
79,483
41,470
0.522
Nuclear Physics
Particle Physics
Diamond Physics
Quantum Physics
* Total Citation Counts Rankings
Rankings
11,628
35
3
Ranking Based On Selection: 3
Soebur Razzaque
University of Johannesburg
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45,387
21,546
0.475
Astroparticle Physics
High Energy Astrophysics
Gamma-ray Astronomy
* Total Citation Counts Rankings
Rankings
23,083
65
4
Ranking Based On Selection: 4
Jan Kramers
University of Johannesburg
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,467
8,182
0.278
isotope geochemistry
geochronology
* Total Citation Counts Rankings
Rankings
29,510
90
5
Ranking Based On Selection: 5
Christian Rogerson
University of Johannesburg
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
24,990
10,520
0.421
Tourism and Development
Local Economic Development
Small Enterprise Development
* Total Citation Counts Rankings
Rankings
34,427
105
6
Ranking Based On Selection: 6
Kevin Durrheim
University of Johannesburg
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
22,458
8,781
0.391
Social psychology
race and ethnic studies
research methods
* Total Citation Counts Rankings
Rankings
36,877
111
7
Ranking Based On Selection: 7
Michael A. Henning
University of Johannesburg
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,395
9,330
0.436
* Total Citation Counts Rankings
Rankings
40,612
125
8
Ranking Based On Selection: 8
Ben-Erik Van Wyk
University of Johannesburg
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,984
8,143
0.407
Taxonomy
Ethnobotany
Medicinal plants
Apiaceae
Umbelliferae
* Total Citation Counts Rankings
Rankings
43,820
137
9
Ranking Based On Selection: 9
Nic Beukes
University of Johannesburg
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,873
7,016
0.372
Economic Geology
Iron and manganese deposits
Precambrian geology
Sedimentology and basin analyses.
* Total Citation Counts Rankings
Rankings
51,354
165
10
Ranking Based On Selection: 10
Patrick Bond
University of Johannesburg
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,799
5,196
0.309
political economy
political ecology
geography
social movements
* Total Citation Counts Rankings
Rankings
54,965
182
11
Ranking Based On Selection: 11
Heidi Abrahamse
University of Johannesburg
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,983
11,461
0.717
Photobiology
Photochemistry
Photodynamic therapy
Wound healing
Stem cells
* Total Citation Counts Rankings
Rankings
74,422
247
12
Ranking Based On Selection: 12
Clinton Aigbavboa
University of Johannesburg
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,656
11,980
0.947
Building
Construction Digitalisation
Value Management
Quantity Surveying
Construction Industry Development
* Total Citation Counts Rankings
Rankings
76,348
256
13
Ranking Based On Selection: 13
Tshilidzi Marwala
University of Johannesburg
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,386
6,281
0.507
Artificial Intelligence
AI Governance
Policy
* Total Citation Counts Rankings
Rankings
106,259
379
14
Ranking Based On Selection: 14
Tien-Chien Jen
University of Johannesburg
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,358
7,103
0.759
thermal science
additive manufacturing
Atomic Layer Deposition
Cold Gas Dynamic Spraying
* Total Citation Counts Rankings
Rankings
110,805
402
15
Ranking Based On Selection: 15
Axel Hofmann
University of Johannesburg
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,017
5,499
0.610
* Total Citation Counts Rankings
Rankings
113,084
416
16
Ranking Based On Selection: 16
Ian Dubery
University of Johannesburg
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,855
4,811
0.543
Biochemistry and Molecular biology
Plant-microbe interactions
Innate immunity
Metabolomics
* Total Citation Counts Rankings
Rankings
113,808
420
17
Ranking Based On Selection: 17
Charles Mbohwa
University of Johannesburg
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,808
6,968
0.791
sustainability engineering
biogas
LCA
Future Technologies
* Total Citation Counts Rankings
Rankings
125,795
471
18
Ranking Based On Selection: 18
Marlize Lombard
University of Johannesburg
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,053
4,264
0.529
Stone Age archaeology
human behavioural and cognitive evolution
* Total Citation Counts Rankings
Rankings
127,402
477
19
Ranking Based On Selection: 19
Marlina A. Elburg
University of Johannesburg
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,960
4,020
0.505
igneous petrology
isotope geochemistry
* Total Citation Counts Rankings
Rankings
127,523
481
20
Ranking Based On Selection: 20
Peter Olubambi
University of Johannesburg
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,953
6,469
0.813
Spark Plasma Sintering
Additive Manufacturing
Nanoindentation
Tribocorrosion
* Total Citation Counts Rankings
Rankings
128,272
489
21
Ranking Based On Selection: 21
Stephen Potter
University of Johannesburg
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,911
5,417
0.685
* Total Citation Counts Rankings
Rankings
128,551
493
22
Ranking Based On Selection: 22
Omotayo Arotiba
University of Johannesburg
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,896
6,006
0.761
Electrochemistry
electrochemical biosensors
electrochemical sensors
photoelectrochemistry
water treatment
* Total Citation Counts Rankings
Rankings
128,757
496
23
Ranking Based On Selection: 23
Gert Roodt
University of Johannesburg
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,885
3,888
0.493
Organisational Behaviour
Psychology assessment
Research methodology
Organisational development
Social sciences
* Total Citation Counts Rankings
Rankings
145,669
577
24
Ranking Based On Selection: 24
Noor Ahmed
University of Johannesburg
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,030
3,265
0.464
mechanical engineering
aerodynamics
renewable energy
materials
* Total Citation Counts Rankings
Rankings
147,626
584
25
Ranking Based On Selection: 25
SH Basie B Von Solms
University of Johannesburg
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,941
2,317
0.334
Information Cyber Security