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
BH Harvey
Animal models
Psychopharmacology
Neuroscience
Behavior
Psychiatry
Metrics
H-Index
i10 Index
Citation
52
136
7,947
* Rankings
Ranking Based On Selection :4
Wilna Liebenberg
Solid-state chemistry of drugs
polymorphism
physico-chemical properties of drugs
Metrics
H-Index
i10 Index
Citation
30
54
2,512
* Rankings
Ranking Based On Selection :10
Anne Grobler
drug delivery
drug develpment
animal studies
genetic diseases
infectious disease
Metrics
H-Index
i10 Index
Citation
23
46
1,902
* Rankings
Ranking Based On Selection :12
Lesetja Legoabe
Medicinal Chemistry
Drug Discovery
Discovery of anti-infectives
Metrics
H-Index
i10 Index
Citation
19
35
1,219
* Rankings
Ranking Based On Selection :13
Minja Gerber
Transdermal and topical delivery of pharmaceuticals and cosmeceuticals
Nano-drug delivery vehicles
Metrics
H-Index
i10 Index
Citation
19
25
1,824
* Rankings
Ranking Based On Selection :16
Frans Smit
Malaria
Organic Synthesis
Medicinal Chemistry
Analytical Chemistry
Metrics
H-Index
i10 Index
Citation
17
19
637
* Rankings
Ranking Based On Selection :17
Gisella Terre'blanche
Pharmaceutical chemistry
Parkinson's
Adenosine receptor antagonists
Animal models
Metrics
H-Index
i10 Index
Citation
17
29
1,119
* Rankings
Ranking Based On Selection :18
Johannes F Wentzel
Epigenetics
Molecular Biology
Virology
Molecular Pharmaceutics
Molecular Cancer Biology
Metrics
H-Index
i10 Index
Citation
16
20
1,277
* Rankings
Ranking Based On Selection :19
Jan Steenekamp
pharmaceutical excipients
MUPS
particle size
oral drug delivery
tablets
Metrics
H-Index
i10 Index
Citation
16
25
1,037
* Rankings
Ranking Based On Selection :21
Chrisna Gouws
3D cell culture
spheroids
phytomedicine
traditional African medicine
cancer drug development
Metrics
H-Index
i10 Index
Citation
15
25
742
* Rankings
Ranking Based On Selection :22
Linda Brand
Neuroscience
Pharmacology
psychopharmacology
behavioural models
depression
Metrics
H-Index
i10 Index
Citation
15
16
1,148
* Rankings
Ranking Based On Selection :23
Arina Lourens
Synthetic medicinal chemistry
natural product isolation and characterization
Metrics
H-Index
i10 Index
Citation
14
15
1,213
* Rankings
Ranking Based On Selection :24
Martie S Lubbe
Pharmacy Practice
Pharmaceutical care
drug utilization review
pharmacoepidemiology
pharmacovigilance
Metrics
H-Index
i10 Index
Citation
14
24
628
* Rankings
Ranking Based On Selection :25
Nicole Stieger
Pharmaceutical solid-state chemistry
polymorphism
amorphous solids
nanoparticles
LbL nanocoating
Metrics
H-Index
i10 Index
Citation
13
13
401
* Rankings
Ranking Based On Selection :27
Van Dyk, S
Pharmaceutical Chemistry
Natural products and Medicinal Chemistry
Metrics
H-Index
i10 Index
Citation
11
14
441
Michelle Viljoen
Pharmacokinetics
Pharmacodynamics
Pharmacogenetics
Antiretroviral treatment
Pharmacovigilance
Metrics
H-Index
i10 Index
Citation
9
9
296
Makhotso Lekhooa
Pharmacology
Natural products
Depression
CYP450 metabolism
Ethnobiology
Metrics
H-Index
i10 Index
Citation
6
3
80
Jesslee M Du Plessis
Clinical medicine
Clinical pharmacy
renal
diabetes
adverse drug reactions
Metrics
H-Index
i10 Index
Citation
5
3
86
Wihan Pheiffer
Preclinical studies
Drug-Herb Interaction
Drug Metabolism
Pharmaceutical Sciences
Toxicology
Metrics
H-Index
i10 Index
Citation
4
3
132
Hanlie Steyn
Pharmacy practice
Pharmacovigilance
Pharmacoepidemiology
Pharmaceutical care.
Metrics
H-Index
i10 Index
Citation
3
0
16
Martine Vorster
Clinical pharmacy
pharmacovigilance
neurodevelopmental disorders
psychiatric disorders
primary healthcare
Metrics
H-Index
i10 Index
Citation
3
0
12
Morné Fouché
pharmaceutics
dosage forms
tableting
drug delivery
multiple unit pellet-systems
Metrics
H-Index
i10 Index
Citation
1
1
31
Rankings
Ranking Based On Selection: 1
BH Harvey
Metrics
H-Index
i10 Index
Citation Counts
52
136
7,947
Animal models
Psychopharmacology
Neuroscience
Behavior
Psychiatry
Rankings
Ranking Based On Selection: 2
Josias Hamman
Metrics
H-Index
i10 Index
Citation Counts
35
86
7,534
Rankings
Ranking Based On Selection: 3
Jeanetta Du Plessis
Metrics
H-Index
i10 Index
Citation Counts
35
73
5,115
Rankings
Ranking Based On Selection: 4
Wilna Liebenberg
Metrics
H-Index
i10 Index
Citation Counts
30
54
2,512
Solid-state chemistry of drugs
polymorphism
physico-chemical properties of drugs
Rankings
Ranking Based On Selection: 5
AF Kotze
Metrics
H-Index
i10 Index
Citation Counts
28
36
4,973
Rankings
Ranking Based On Selection: 6
Lissinda Du Plessis
Metrics
H-Index
i10 Index
Citation Counts
27
40
2,357
Rankings
Ranking Based On Selection: 7
Frank Van Der Kooy
Metrics
H-Index
i10 Index
Citation Counts
27
39
3,010
Rankings
Ranking Based On Selection: 8
David D N'da
Metrics
H-Index
i10 Index
Citation Counts
24
52
1,916
Rankings
Ranking Based On Selection: 9
Jan (Jl) Du Preez
Metrics
H-Index
i10 Index
Citation Counts
24
41
1,875
Rankings
Ranking Based On Selection: 10
Anne Grobler
Metrics
H-Index
i10 Index
Citation Counts
23
46
1,902
drug delivery
drug develpment
animal studies
genetic diseases
infectious disease
Rankings
Ranking Based On Selection: 11
Douglas Oliver
Metrics
H-Index
i10 Index
Citation Counts
21
38
1,613
Rankings
Ranking Based On Selection: 12
Lesetja Legoabe
Metrics
H-Index
i10 Index
Citation Counts
19
35
1,219
Medicinal Chemistry
Drug Discovery
Discovery of anti-infectives
Rankings
Ranking Based On Selection: 13
Minja Gerber
Metrics
H-Index
i10 Index
Citation Counts
19
25
1,824
Transdermal and topical delivery of pharmaceuticals and cosmeceuticals
Nano-drug delivery vehicles
Rankings
Ranking Based On Selection: 14
Christiaan Brink
Metrics
H-Index
i10 Index
Citation Counts
19
26
1,114
Rankings
Ranking Based On Selection: 15
Daniel P. Otto
Metrics
H-Index
i10 Index
Citation Counts
18
25
1,469
Rankings
Ranking Based On Selection: 16
Frans Smit
Metrics
H-Index
i10 Index
Citation Counts
17
19
637
Malaria
Organic Synthesis
Medicinal Chemistry
Analytical Chemistry
Rankings
Ranking Based On Selection: 17
Gisella Terre'blanche
Metrics
H-Index
i10 Index
Citation Counts
17
29
1,119
Pharmaceutical chemistry
Parkinson's
Adenosine receptor antagonists
Animal models
Rankings
Ranking Based On Selection: 18
Johannes F Wentzel
Metrics
H-Index
i10 Index
Citation Counts
16
20
1,277
Epigenetics
Molecular Biology
Virology
Molecular Pharmaceutics
Molecular Cancer Biology
Rankings
Ranking Based On Selection: 19
Jan Steenekamp
Metrics
H-Index
i10 Index
Citation Counts
16
25
1,037
pharmaceutical excipients
MUPS
particle size
oral drug delivery
tablets
Rankings
Ranking Based On Selection: 20
Marisa Moller
Metrics
H-Index
i10 Index
Citation Counts
15
18
1,121
Rankings
Ranking Based On Selection: 21
Chrisna Gouws
Metrics
H-Index
i10 Index
Citation Counts
15
25
742
3D cell culture
spheroids
phytomedicine
traditional African medicine
cancer drug development
Rankings
Ranking Based On Selection: 22
Linda Brand
Metrics
H-Index
i10 Index
Citation Counts
15
16
1,148
Neuroscience
Pharmacology
psychopharmacology
behavioural models
depression
Rankings
Ranking Based On Selection: 23
Arina Lourens
Metrics
H-Index
i10 Index
Citation Counts
14
15
1,213
Synthetic medicinal chemistry
natural product isolation and characterization
Rankings
Ranking Based On Selection: 24
Martie S Lubbe
Metrics
H-Index
i10 Index
Citation Counts
14
24
628
Pharmacy Practice
Pharmaceutical care
drug utilization review
pharmacoepidemiology
pharmacovigilance
Rankings
Ranking Based On Selection: 25
Nicole Stieger
Metrics
H-Index
i10 Index
Citation Counts
13
13
401
Pharmaceutical solid-state chemistry
polymorphism
amorphous solids
nanoparticles
LbL nanocoating
Rankings
Ranking Based On Selection: 26
Dewald Steyn
Metrics
H-Index
i10 Index
Citation Counts
12
17
678
Rankings
Ranking Based On Selection: 27
Van Dyk, S
Metrics
H-Index
i10 Index
Citation Counts
11
14
441
Pharmaceutical Chemistry
Natural products and Medicinal Chemistry
Rankings
Ranking Based On Selection: 28
Malie Rheeders
Metrics
H-Index
i10 Index
Citation Counts
10
10
353
Rankings
Ranking Based On Selection: 29
Francois Viljoen
Metrics
H-Index
i10 Index
Citation Counts
9
9
597
Bioanalysis
Analytical (HPLC
LCMS)
Clinical chemistry
Neuroscience
Rankings
Ranking Based On Selection: 30
Michelle Viljoen
Metrics
H-Index
i10 Index
Citation Counts
9
9
296
Pharmacokinetics
Pharmacodynamics
Pharmacogenetics
Antiretroviral treatment
Pharmacovigilance
Rankings
Ranking Based On Selection: 31
B. Boneschans
Metrics
H-Index
i10 Index
Citation Counts
8
7
195
Rankings
Ranking Based On Selection: 33
Makhotso Lekhooa
Metrics
H-Index
i10 Index
Citation Counts
6
3
80
Pharmacology
Natural products
Depression
CYP450 metabolism
Ethnobiology
Rankings
Ranking Based On Selection: 34
Jesslee M Du Plessis
Metrics
H-Index
i10 Index
Citation Counts
5
3
86
Clinical medicine
Clinical pharmacy
renal
diabetes
adverse drug reactions
Rankings
Ranking Based On Selection: 35
Wihan Pheiffer
Metrics
H-Index
i10 Index
Citation Counts
4
3
132
Preclinical studies
Drug-Herb Interaction
Drug Metabolism
Pharmaceutical Sciences
Toxicology
Rankings
Ranking Based On Selection: 36
Phelelisiwe Dube
Metrics
H-Index
i10 Index
Citation Counts
3
2
62
Rankings
Ranking Based On Selection: 37
Hanlie Steyn
Metrics
H-Index
i10 Index
Citation Counts
3
0
16
Pharmacy practice
Pharmacovigilance
Pharmacoepidemiology
Pharmaceutical care.
Rankings
Ranking Based On Selection: 38
Martine Vorster
Metrics
H-Index
i10 Index
Citation Counts
3
0
12
Clinical pharmacy
pharmacovigilance
neurodevelopmental disorders
psychiatric disorders
primary healthcare
Rankings
Ranking Based On Selection: 39
Rianda Joubert
Metrics
H-Index
i10 Index
Citation Counts
2
0
24
Drug utilization review
pharmacoeconomics
pharmacoepidemiology
Rankings
Ranking Based On Selection: 40
Morné Fouché
Metrics
H-Index
i10 Index
Citation Counts
1
1
31
pharmaceutics
dosage forms
tableting
drug delivery
multiple unit pellet-systems
Rankings
Ranking Based On Selection: 41
Pharmacy
Primary health care and drug therapy
assessment
pharmacy education