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 :2
Anthony (Tony) R Palmer
plant water use
earth observation
ecology
rangelands
ecosystem services
Metrics
H-Index
i10 Index
Citation
35
79
4,172
* Rankings
Ranking Based On Selection :5
Abe Shegro Gerrano
Plant breeding and Genetics
Seed System Research
NRF rated
SCNASP
ISHS
Metrics
H-Index
i10 Index
Citation
26
52
2,079
* Rankings
Ranking Based On Selection :6
Mokhele Moeletsi
Agrometeorology
Carbon Management
Climate Change Mitigation
Climate Change Adaptation
Metrics
H-Index
i10 Index
Citation
26
52
1,997
* Rankings
Ranking Based On Selection :8
Michael Bairu
Plant hormone physiology
Biotechnology
Crop-based agriculture
plant breeding and agronomy
Metrics
H-Index
i10 Index
Citation
26
35
3,264
* Rankings
Ranking Based On Selection :10
Azwihangwisi Maiwashe
Animal Breeding and Genetics
Livestock Genomics
Conservation of Farm Animal Genetic Resources
Metrics
H-Index
i10 Index
Citation
25
41
1,977
* Rankings
Ranking Based On Selection :13
Bhekumthetho Ncube
Stress Ecophysiology
Plant Phisiology and Biochemistry
Agronomy
Sustainable Crop Production
Metrics
H-Index
i10 Index
Citation
21
32
2,259
* Rankings
Ranking Based On Selection :15
Lorinda Frylinck
Biochemistry
histology
physiology (muscle energy) to explain meat quality outcomes.
Metrics
H-Index
i10 Index
Citation
20
28
1,382
* Rankings
Ranking Based On Selection :16
Ashira Roopnarain
Biotechnology & Applied Microbiology
Energy & Fuels
Agricultural Biotechnology
Microbial ecology
Metrics
H-Index
i10 Index
Citation
19
27
1,420
* Rankings
Ranking Based On Selection :17
Tonna A. Anyasi
Food and Agro-Processing
Plant Bioactives
Carbohydrate Polymers
Postharvest Technology
Metrics
H-Index
i10 Index
Citation
19
24
1,426
* Rankings
Ranking Based On Selection :20
Willem Jansen Van Rensburg
Plant breeding
amaranth
cannabis
essential oils
genetic conservation
Metrics
H-Index
i10 Index
Citation
17
21
1,190
* Rankings
Ranking Based On Selection :24
Adornis D. Nciizah
conservation agriculture
soil physics
aggregate stability
soil degradation
Metrics
H-Index
i10 Index
Citation
16
20
745
* Rankings
Ranking Based On Selection :28
Zinash A Belay
Postharvest Technology
Sustainable Food Packaging
Food Process Engineering
Metrics
H-Index
i10 Index
Citation
15
20
838
* Rankings
Ranking Based On Selection :29
Phokele Maponya
Agricultural Economics
SmallHolder Farmer Development
Rural Development
Agroforestry
Food Security
Metrics
H-Index
i10 Index
Citation
15
18
995
* Rankings
Ranking Based On Selection :30
Mariette Truter
Plant pathology
Mycology
Soil-borne pathogens
Alternaria
Rhizoctonia
Metrics
H-Index
i10 Index
Citation
15
26
867
* Rankings
Ranking Based On Selection :33
Hafiz Abdelgadir
Agronomy
Crops water relations
Crop stress physiology
Application of plant growth regulators
Crop pollination
Metrics
H-Index
i10 Index
Citation
14
15
1,046
* Rankings
Ranking Based On Selection :38
Deon Bakkes
Machine Learning
Data Science
Biological Systematics
Evolution and Biogeography
Metrics
H-Index
i10 Index
Citation
12
15
748
* Rankings
Ranking Based On Selection :41
Moeti Oriel Taioe
Veterinary entomology
parasitology
molecular biology
biodiversity
and nature
Metrics
H-Index
i10 Index
Citation
11
13
334
* Rankings
Ranking Based On Selection :45
Francuois Muller
Botany
plant eco-physiology
rangeland ecology
plant mineral nutrition
Metrics
H-Index
i10 Index
Citation
11
11
311
* Rankings
Ranking Based On Selection :50
Zaid Adekunle Bello
Agronomy
agrometeorology
crop modelling
soil water and management
irrigation
Metrics
H-Index
i10 Index
Citation
9
9
225
* Rankings
Ranking Based On Selection :56
Emomotimi E. Bamuza-Pemu
Emerging Chemical Pollutants in water
photocatalytic degradation of organic pollutants in water
chromatographic techniques
metabolomics
bioinformatics.
Metrics
H-Index
i10 Index
Citation
8
8
263
* Rankings
Ranking Based On Selection :61
Farai Tererai
Plant Invasions
SDM
Climate change
Water resources management (incl modelling)
Planetary boundaries
Metrics
H-Index
i10 Index
Citation
7
7
310
* Rankings
Ranking Based On Selection :67
Andiswa Finca
Communal Rangelands
Communal livestock farmers
Food Security
Rural Livelihoods
Metrics
H-Index
i10 Index
Citation
7
5
155
* Rankings
Ranking Based On Selection :70
Lindumusa Myeni
Agrometeorology
Soil water
Climate Change
Sustainable agriculture
Hydrology
Metrics
H-Index
i10 Index
Citation
6
5
275
Nandi Elana Nyamende
Postharvest technology
Food bioactives
Processing
PCR
Food Microbiology
Metrics
H-Index
i10 Index
Citation
5
2
54
Mzukisi Matandabuzo
Water Quality
Polymers
Membrane separation
Pharmaceuticals
Food & Feed Analysis
Metrics
H-Index
i10 Index
Citation
5
2
86
Rulien Grobler
Animal science
Animal breeding and genetics
Livestock genomics
Beef cattle
Metrics
H-Index
i10 Index
Citation
4
1
34
Sinalo Mani
Gut microbiome
Host-microbe interactions
Probiotics
Bioinformatics
Microbial Genetics
Metrics
H-Index
i10 Index
Citation
3
1
35
J Koen
horticulture
aboriculture
fungiculture
permaculture
medicinal plants
Metrics
H-Index
i10 Index
Citation
3
1
31
Philani Justice Dlamini
Plant Virology
Plant Biotechnology
Genetic Engineering
Plant Breeding
Metrics
H-Index
i10 Index
Citation
1
1
41
Rankings
Ranking Based On Selection: 1
Dalene De Beer
Metrics
H-Index
i10 Index
Citation Counts
41
112
5,758
Phenolic compounds
HPLC analysis
herbal teas
fruits
Rankings
Ranking Based On Selection: 2
Anthony (Tony) R Palmer
Metrics
H-Index
i10 Index
Citation Counts
35
79
4,172
plant water use
earth observation
ecology
rangelands
ecosystem services
Rankings
Ranking Based On Selection: 3
sunette Laurie
Metrics
H-Index
i10 Index
Citation Counts
28
55
2,538
Rankings
Ranking Based On Selection: 4
Mike Peel
Metrics
H-Index
i10 Index
Citation Counts
28
50
2,738
Rankings
Ranking Based On Selection: 5
Abe Shegro Gerrano
Metrics
H-Index
i10 Index
Citation Counts
26
52
2,079
Plant breeding and Genetics
Seed System Research
NRF rated
SCNASP
ISHS
Rankings
Ranking Based On Selection: 6
Mokhele Moeletsi
Metrics
H-Index
i10 Index
Citation Counts
26
52
1,997
Agrometeorology
Carbon Management
Climate Change Mitigation
Climate Change Adaptation
Rankings
Ranking Based On Selection: 7
Ian Du Plooy
Metrics
H-Index
i10 Index
Citation Counts
26
58
1,974
Horticulture Agronomy Irrigation Ferilization
Rankings
Ranking Based On Selection: 8
Michael Bairu
Metrics
H-Index
i10 Index
Citation Counts
26
35
3,264
Plant hormone physiology
Biotechnology
Crop-based agriculture
plant breeding and agronomy
Rankings
Ranking Based On Selection: 10
Azwihangwisi Maiwashe
Metrics
H-Index
i10 Index
Citation Counts
25
41
1,977
Animal Breeding and Genetics
Livestock Genomics
Conservation of Farm Animal Genetic Resources
Rankings
Ranking Based On Selection: 12
Costas Zachariades
Metrics
H-Index
i10 Index
Citation Counts
22
43
1,974
Plant-insect relationships
biological control
Rankings
Ranking Based On Selection: 13
Bhekumthetho Ncube
Metrics
H-Index
i10 Index
Citation Counts
21
32
2,259
Stress Ecophysiology
Plant Phisiology and Biochemistry
Agronomy
Sustainable Crop Production
Rankings
Ranking Based On Selection: 14
Cuthbert Banga
Metrics
H-Index
i10 Index
Citation Counts
20
32
1,045
Rankings
Ranking Based On Selection: 15
Lorinda Frylinck
Metrics
H-Index
i10 Index
Citation Counts
20
28
1,382
Biochemistry
histology
physiology (muscle energy) to explain meat quality outcomes.
Rankings
Ranking Based On Selection: 16
Ashira Roopnarain
Metrics
H-Index
i10 Index
Citation Counts
19
27
1,420
Biotechnology & Applied Microbiology
Energy & Fuels
Agricultural Biotechnology
Microbial ecology
Rankings
Ranking Based On Selection: 17
Tonna A. Anyasi
Metrics
H-Index
i10 Index
Citation Counts
19
24
1,426
Food and Agro-Processing
Plant Bioactives
Carbohydrate Polymers
Postharvest Technology
Rankings
Ranking Based On Selection: 18
Hintsa Araya
Metrics
H-Index
i10 Index
Citation Counts
18
23
839
Agronomy
plant propagation
medicinal plants
vegetables
Rankings
Ranking Based On Selection: 19
Kerstin Junker
Metrics
H-Index
i10 Index
Citation Counts
18
40
1,151
Parasitology
helminthology
nematodes
pentastomes
Rankings
Ranking Based On Selection: 20
Willem Jansen Van Rensburg
Metrics
H-Index
i10 Index
Citation Counts
17
21
1,190
Plant breeding
amaranth
cannabis
essential oils
genetic conservation
Rankings
Ranking Based On Selection: 21
Martha Pofu
Metrics
H-Index
i10 Index
Citation Counts
17
26
839
Rankings
Ranking Based On Selection: 22
Macdex Mutema
Metrics
H-Index
i10 Index
Citation Counts
16
17
871
Rankings
Ranking Based On Selection: 23
Rian Pierneef
Metrics
H-Index
i10 Index
Citation Counts
16
24
983
Rankings
Ranking Based On Selection: 24
Adornis D. Nciizah
Metrics
H-Index
i10 Index
Citation Counts
16
20
745
conservation agriculture
soil physics
aggregate stability
soil degradation
Rankings
Ranking Based On Selection: 25
Makgahlela
Metrics
H-Index
i10 Index
Citation Counts
16
18
903
Animal breeding and Genetics
Genomics
Genomic Selection
Rankings
Ranking Based On Selection: 26
Adriaana Jacobs
Metrics
H-Index
i10 Index
Citation Counts
16
19
899
Rankings
Ranking Based On Selection: 27
George Chirima
Metrics
H-Index
i10 Index
Citation Counts
15
23
632
Statistical modelling and GIS
Rankings
Ranking Based On Selection: 28
Zinash A Belay
Metrics
H-Index
i10 Index
Citation Counts
15
20
838
Postharvest Technology
Sustainable Food Packaging
Food Process Engineering
Rankings
Ranking Based On Selection: 29
Phokele Maponya
Metrics
H-Index
i10 Index
Citation Counts
15
18
995
Agricultural Economics
SmallHolder Farmer Development
Rural Development
Agroforestry
Food Security
Rankings
Ranking Based On Selection: 30
Mariette Truter
Metrics
H-Index
i10 Index
Citation Counts
15
26
867
Plant pathology
Mycology
Soil-borne pathogens
Alternaria
Rhizoctonia
Rankings
Ranking Based On Selection: 31
Ahmed Idris Hassen
Metrics
H-Index
i10 Index
Citation Counts
14
19
1,224
Rankings
Ranking Based On Selection: 32
Jonathan Featherston
Metrics
H-Index
i10 Index
Citation Counts
14
17
687
Rankings
Ranking Based On Selection: 33
Hafiz Abdelgadir
Metrics
H-Index
i10 Index
Citation Counts
14
15
1,046
Agronomy
Crops water relations
Crop stress physiology
Application of plant growth regulators
Crop pollination
Rankings
Ranking Based On Selection: 34
Robin Lyle
Metrics
H-Index
i10 Index
Citation Counts
14
20
575
Rankings
Ranking Based On Selection: 35
Alri Pretorius
Metrics
H-Index
i10 Index
Citation Counts
14
18
715
Rankings
Ranking Based On Selection: 36
Vicki Tolmay
Metrics
H-Index
i10 Index
Citation Counts
14
19
818
Rankings
Ranking Based On Selection: 37
Azwimbavhi Reckson Mulidzi
Metrics
H-Index
i10 Index
Citation Counts
13
21
1,153
Wastewater management
Soil Conservation
Agriculture
Rankings
Ranking Based On Selection: 38
Deon Bakkes
Metrics
H-Index
i10 Index
Citation Counts
12
15
748
Machine Learning
Data Science
Biological Systematics
Evolution and Biogeography
Rankings
Ranking Based On Selection: 39
Idan Chiyanzu
Metrics
H-Index
i10 Index
Citation Counts
12
13
1,133
Rankings
Ranking Based On Selection: 40
Michele Cloete
Metrics
H-Index
i10 Index
Citation Counts
12
15
811
Rankings
Ranking Based On Selection: 41
Moeti Oriel Taioe
Metrics
H-Index
i10 Index
Citation Counts
11
13
334
Veterinary entomology
parasitology
molecular biology
biodiversity
and nature
Rankings
Ranking Based On Selection: 42
Maxwell Mewa Ngongang
Metrics
H-Index
i10 Index
Citation Counts
11
12
380
Rankings
Ranking Based On Selection: 43
Azwimbavhi Mulidzi
Metrics
H-Index
i10 Index
Citation Counts
11
14
279
Rankings
Ranking Based On Selection: 44
Minique De Castro
Metrics
H-Index
i10 Index
Citation Counts
11
12
632
Transcriptomics
Bioinformatics
Tick Biology
Rankings
Ranking Based On Selection: 45
Francuois Muller
Metrics
H-Index
i10 Index
Citation Counts
11
11
311
Botany
plant eco-physiology
rangeland ecology
plant mineral nutrition
Rankings
Ranking Based On Selection: 47
Habtom Tesfagiorgis
Metrics
H-Index
i10 Index
Citation Counts
10
11
304
Rankings
Ranking Based On Selection: 48
Kenneth Nhundu
Metrics
H-Index
i10 Index
Citation Counts
10
10
279
Rankings
Ranking Based On Selection: 49
Astrid Jankielsohn
Metrics
H-Index
i10 Index
Citation Counts
10
11
458
Rankings
Ranking Based On Selection: 50
Zaid Adekunle Bello
Metrics
H-Index
i10 Index
Citation Counts
9
9
225
Agronomy
agrometeorology
crop modelling
soil water and management
irrigation
Rankings
Ranking Based On Selection: 52
Ntuthuko Mkhize
Metrics
H-Index
i10 Index
Citation Counts
9
8
235
Livestock Production
Pasture Science
Behavioral Ecology
Rankings
Ranking Based On Selection: 54
Robert Nofemela
Metrics
H-Index
i10 Index
Citation Counts
9
9
629
biological control
integrated pest management
Rankings
Ranking Based On Selection: 55
Fritz Heystek
Metrics
H-Index
i10 Index
Citation Counts
9
8
290
Rankings
Ranking Based On Selection: 56
Emomotimi E. Bamuza-Pemu
Metrics
H-Index
i10 Index
Citation Counts
8
8
263
Emerging Chemical Pollutants in water
photocatalytic degradation of organic pollutants in water
chromatographic techniques
metabolomics
bioinformatics.
Rankings
Ranking Based On Selection: 57
Riaan Stals
Metrics
H-Index
i10 Index
Citation Counts
8
7
1,017
Coleoptera
Systematics
Nomenclature
Rankings
Ranking Based On Selection: 58
Justin Wallace Hoff
Metrics
H-Index
i10 Index
Citation Counts
8
6
251
Wine Biotechnology
Fermentation
Molecular bIology
Rankings
Ranking Based On Selection: 59
Andrea Spickett
Metrics
H-Index
i10 Index
Citation Counts
8
7
176
Rankings
Ranking Based On Selection: 60
Ad Sippel
Metrics
H-Index
i10 Index
Citation Counts
8
7
232
Rankings
Ranking Based On Selection: 61
Farai Tererai
Metrics
H-Index
i10 Index
Citation Counts
7
7
310
Plant Invasions
SDM
Climate change
Water resources management (incl modelling)
Planetary boundaries
Rankings
Ranking Based On Selection: 62
Khanyisile Mdladla
Metrics
H-Index
i10 Index
Citation Counts
7
7
248
Animal Genomics
Adaptation
Farm Animal Genetic Resources
Rankings
Ranking Based On Selection: 63
Tshima Ramakuwela
Metrics
H-Index
i10 Index
Citation Counts
7
6
241
Rankings
Ranking Based On Selection: 65
Motiki Meshack Mofokeng
Metrics
H-Index
i10 Index
Citation Counts
7
5
173
Rankings
Ranking Based On Selection: 66
Masindi Lottus Mphaphathi
Metrics
H-Index
i10 Index
Citation Counts
7
7
250
Rankings
Ranking Based On Selection: 67
Andiswa Finca
Metrics
H-Index
i10 Index
Citation Counts
7
5
155
Communal Rangelands
Communal livestock farmers
Food Security
Rural Livelihoods
Rankings
Ranking Based On Selection: 68
SM Grobler
Metrics
H-Index
i10 Index
Citation Counts
7
4
129
Rankings
Ranking Based On Selection: 69
Elsie Cruywagen
Metrics
H-Index
i10 Index
Citation Counts
6
5
605
Rankings
Ranking Based On Selection: 70
Lindumusa Myeni
Metrics
H-Index
i10 Index
Citation Counts
6
5
275
Agrometeorology
Soil water
Climate Change
Sustainable agriculture
Hydrology
Rankings
Ranking Based On Selection: 71
Simon Frederick Lashmar
Metrics
H-Index
i10 Index
Citation Counts
6
5
195
animal science
animal breeding
animal genetics
genomics
Rankings
Ranking Based On Selection: 72
Ingrid Malebana
Metrics
H-Index
i10 Index
Citation Counts
6
5
160
Rankings
Ranking Based On Selection: 73
M. Thabang Madisha
Metrics
H-Index
i10 Index
Citation Counts
6
4
103
Rankings
Ranking Based On Selection: 74
Inge Gazendam
Metrics
H-Index
i10 Index
Citation Counts
6
4
158
Rankings
Ranking Based On Selection: 75
Desmond Ncango Pr. Sci. Nat.
Metrics
H-Index
i10 Index
Citation Counts
6
2
80
Plant pathology
Plant viruses
Plant disease managment
Rankings
Ranking Based On Selection: 76
Lawrence Owoeye
Metrics
H-Index
i10 Index
Citation Counts
5
5
145
Rankings
Ranking Based On Selection: 77
Sipho Sibanda|Sibanda Sipho
Metrics
H-Index
i10 Index
Citation Counts
5
4
142
Postharvest
Mechanisation
Precision agriculture
Renewable energy
Rankings
Ranking Based On Selection: 78
Haripriya Rama
Metrics
H-Index
i10 Index
Citation Counts
5
3
206
Environmental Biotechnology
Nanomaterials
Renewable Energy
Bioremediation
Rankings
Ranking Based On Selection: 79
Simone N. Theron
Metrics
H-Index
i10 Index
Citation Counts
5
2
147
Climate Change
Agriculture
Land Use Change
Adaptation
Rankings
Ranking Based On Selection: 80
Nandi Elana Nyamende
Metrics
H-Index
i10 Index
Citation Counts
5
2
54
Postharvest technology
Food bioactives
Processing
PCR
Food Microbiology
Rankings
Ranking Based On Selection: 82
Mzukisi Matandabuzo
Metrics
H-Index
i10 Index
Citation Counts
5
2
86
Water Quality
Polymers
Membrane separation
Pharmaceuticals
Food & Feed Analysis
Rankings
Ranking Based On Selection: 83
Johannes P Nell
Metrics
H-Index
i10 Index
Citation Counts
5
2
166
Rankings
Ranking Based On Selection: 84
Mashudu Mukhuba
Metrics
H-Index
i10 Index
Citation Counts
4
3
121
Rankings
Ranking Based On Selection: 86
Nondumiso Zanele Sosibo
Metrics
H-Index
i10 Index
Citation Counts
4
3
82
Soil science
Soil fertility
soil carbon
phosphorus
conservation agriculture
Rankings
Ranking Based On Selection: 87
Adeola Salawu-Rotimi
Metrics
H-Index
i10 Index
Citation Counts
4
2
77
Bioinformatics
Medical Microbiology
Agriculture
Rankings
Ranking Based On Selection: 88
Rulien Grobler
Metrics
H-Index
i10 Index
Citation Counts
4
1
34
Animal science
Animal breeding and genetics
Livestock genomics
Beef cattle
Rankings
Ranking Based On Selection: 89
Nndamuleleni Romeo Murovhi
Metrics
H-Index
i10 Index
Citation Counts
3
3
83
Rankings
Ranking Based On Selection: 90
Sinalo Mani
Metrics
H-Index
i10 Index
Citation Counts
3
1
35
Gut microbiome
Host-microbe interactions
Probiotics
Bioinformatics
Microbial Genetics
Rankings
Ranking Based On Selection: 91
J Koen
Metrics
H-Index
i10 Index
Citation Counts
3
1
31
horticulture
aboriculture
fungiculture
permaculture
medicinal plants
Rankings
Ranking Based On Selection: 92
Mukovhe V Singo|Mukovhe Vele Singo
Metrics
H-Index
i10 Index
Citation Counts
3
1
29
Climate change
Climatology
Climate Modeling
Extreme Events
Wildfires
Rankings
Ranking Based On Selection: 93
Kgantjie Moloto
Metrics
H-Index
i10 Index
Citation Counts
3
1
39
Rankings
Ranking Based On Selection: 95
Mamonokane Olga Diale
Metrics
H-Index
i10 Index
Citation Counts
2
2
42
Plant growth-promoting rhizobacteria
Endophytes
Genomics
Rankings
Ranking Based On Selection: 96
Neo E Nyakane
Metrics
H-Index
i10 Index
Citation Counts
2
1
82
Rankings
Ranking Based On Selection: 97
Nomathemba Majola
Metrics
H-Index
i10 Index
Citation Counts
2
1
77
Plant Breeding
Plant Genetics and Biotechnology
Rankings
Ranking Based On Selection: 98
Khethani Mhelembe
Metrics
H-Index
i10 Index
Citation Counts
2
1
40
Rankings
Ranking Based On Selection: 99
Mxolisi P Voko
Metrics
H-Index
i10 Index
Citation Counts
2
1
28
Biostimulants
Plant physiology
metabolomics and molecular biology.
Rankings
Ranking Based On Selection: 100
Philani Justice Dlamini
Metrics
H-Index
i10 Index
Citation Counts
1
1
41
Plant Virology
Plant Biotechnology
Genetic Engineering
Plant Breeding