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" (1,014,167 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 :3
Alan Duncan
livestock nutrition
smallholder
agriculture
Africa
Asia
Metrics
H-Index
i10 Index
Citation
49
112
7,622
* Rankings
Ranking Based On Selection :6
Johanna Lindahl
Emerging infectious diseases
vector-borne diseases
zoonotic diseases
food safety
food security
Metrics
H-Index
i10 Index
Citation
39
111
5,238
* Rankings
Ranking Based On Selection :7
Hung Nguyen-Viet
One Health
Ecohealth
Food safety
Risk Assessment
Livestock
Metrics
H-Index
i10 Index
Citation
38
88
4,297
* Rankings
Ranking Based On Selection :10
Augustine Ayantunde
Sustainable agriculture
rural development
climate change
animal nutrition
feed resources
Metrics
H-Index
i10 Index
Citation
33
63
3,303
* Rankings
Ranking Based On Selection :11
Isabelle Baltenweck
livestock
farm level economics
gender
value chain development
developing countries
Metrics
H-Index
i10 Index
Citation
32
71
3,898
* Rankings
Ranking Based On Selection :12
James Hammond
Sustainable Development
Agriculture and Land Use
Decision Making
Innovation
Digital and Data.
Metrics
H-Index
i10 Index
Citation
31
47
3,451
* Rankings
Ranking Based On Selection :14
Todd A Crane
anthropology
science and technology studies
climate change adaptation and mitigation
agropastoralism
rural development
Metrics
H-Index
i10 Index
Citation
27
49
2,956
* Rankings
Ranking Based On Selection :15
Julie Ojango
Animal Genetics and Breeding
Quantitative genetics
livestock production systems
developing countries
Metrics
H-Index
i10 Index
Citation
24
41
2,076
* Rankings
Ranking Based On Selection :16
Naftaly Githaka
Ticks
parasites
live vaccines
zoonotic tick-borne viruses
climate change and disease patterns
Metrics
H-Index
i10 Index
Citation
24
40
1,227
* Rankings
Ranking Based On Selection :19
Alessandra Galie'
Gender
livestock
crops
seed governance
food security
Metrics
H-Index
i10 Index
Citation
20
34
1,615
* Rankings
Ranking Based On Selection :21
Ally Okeyo Mwai
Quantitative Genetics
Conservation Gentetics
Genomics
Animal Breeding
Metrics
H-Index
i10 Index
Citation
19
26
1,598
* Rankings
Ranking Based On Selection :23
Wondmeneh Esatu Woldegiorgiss
Animal Physiology
Poultry immunology
poultry husbandry and animal feed
poultry breeding and genetics
quantitative genetics
Metrics
H-Index
i10 Index
Citation
18
30
939
* Rankings
Ranking Based On Selection :24
Fiona Flintan
Rangelands
pastoralism
gender
participatory action research
global advocacy/lobbying
Metrics
H-Index
i10 Index
Citation
18
37
1,492
* Rankings
Ranking Based On Selection :27
Dishon M Muloi
Infectious Diseases
Bacterial Genomics
Antimicrobial Resistance
Public Health
Metrics
H-Index
i10 Index
Citation
16
18
1,037
* Rankings
Ranking Based On Selection :28
Nicholas Svitek
Virology
Immunology
Vaccinology
Parasitology
Metrics
H-Index
i10 Index
Citation
16
22
1,079
* Rankings
Ranking Based On Selection :29
Mohamadou Lamine Fadiga
Animal Health Economics
Value Chain Analysis
Demand and Sector Analysis
Feasibility Study
Metrics
H-Index
i10 Index
Citation
15
24
829
* Rankings
Ranking Based On Selection :30
Johanneke Dinie Hemmink
Veterinary medicine
immunology
vaccinology
African swine fever
tick-borne diseases
Metrics
H-Index
i10 Index
Citation
14
17
629
* Rankings
Ranking Based On Selection :31
Anna Lacasta
immunology
microbiology
livestock
african swine fever
east coast fever
Metrics
H-Index
i10 Index
Citation
14
17
1,595
* Rankings
Ranking Based On Selection :34
Lillian Wayua Wambua
One health
Zoonoses
Antimicrobial Resistance
Emerging infectious diseases
Molecular diagnostics
Metrics
H-Index
i10 Index
Citation
11
13
393
* Rankings
Ranking Based On Selection :35
Immaculate Omondi
Impact Assessment
Economic valuation
choice Experiments
Metrics
H-Index
i10 Index
Citation
11
12
395
* Rankings
Ranking Based On Selection :41
Million Gebreyes
Multi-stakeholder platforms facilitation
Scaling of Agricultural Innovations
Water-Energy-Food Nexus: Water Governance
Climat
Metrics
H-Index
i10 Index
Citation
9
9
209
* Rankings
Ranking Based On Selection :42
Tezira A Lore
agricultural communication
food safety
One Health
research uptake
Metrics
H-Index
i10 Index
Citation
9
8
469
* Rankings
Ranking Based On Selection :45
Esther Kihoro
Agricultural economics and modelling
Climate Change and Inclusive Development
Gender
Metrics
H-Index
i10 Index
Citation
8
7
408
* Rankings
Ranking Based On Selection :51
Prosper Houessionon
Agricultural Economics Development Economics Climat Smart Agriculture Impact Assessment Adoption studies
Metrics
H-Index
i10 Index
Citation
6
5
239
* Rankings
Ranking Based On Selection :53
Richard Nyamota
Infectious diseases
molecular epidemiology
genetic diversity
phylogenetics
biochemistry
Metrics
H-Index
i10 Index
Citation
6
4
125
* Rankings
Ranking Based On Selection :56
Tushar Kumar Dey
Microbiology
Fermented food safety
Antimicrobial resistance
Metrics
H-Index
i10 Index
Citation
5
5
206
* Rankings
Ranking Based On Selection :57
Dorine Odongo
Research communications
policy and governance
Metrics
H-Index
i10 Index
Citation
4
2
59
Rankings
Ranking Based On Selection: 1
Philip Thornton
Metrics
H-Index
i10 Index
Citation Counts
108
304
50,074
Rankings
Ranking Based On Selection: 2
Mark Van Wijk
Metrics
H-Index
i10 Index
Citation Counts
71
140
15,725
Rankings
Ranking Based On Selection: 3
Alan Duncan
Metrics
H-Index
i10 Index
Citation Counts
49
112
7,622
livestock nutrition
smallholder
agriculture
Africa
Asia
Rankings
Ranking Based On Selection: 4
Michael Bluemmel
Metrics
H-Index
i10 Index
Citation Counts
44
149
14,011
Rankings
Ranking Based On Selection: 5
Kai Sonder
Metrics
H-Index
i10 Index
Citation Counts
40
80
5,686
Rankings
Ranking Based On Selection: 6
Johanna Lindahl
Metrics
H-Index
i10 Index
Citation Counts
39
111
5,238
Emerging infectious diseases
vector-borne diseases
zoonotic diseases
food safety
food security
Rankings
Ranking Based On Selection: 7
Hung Nguyen-Viet
Metrics
H-Index
i10 Index
Citation Counts
38
88
4,297
One Health
Ecohealth
Food safety
Risk Assessment
Livestock
Rankings
Ranking Based On Selection: 9
Solomon Gizaw
Metrics
H-Index
i10 Index
Citation Counts
35
86
3,872
Rankings
Ranking Based On Selection: 10
Augustine Ayantunde
Metrics
H-Index
i10 Index
Citation Counts
33
63
3,303
Sustainable agriculture
rural development
climate change
animal nutrition
feed resources
Rankings
Ranking Based On Selection: 11
Isabelle Baltenweck
Metrics
H-Index
i10 Index
Citation Counts
32
71
3,898
livestock
farm level economics
gender
value chain development
developing countries
Rankings
Ranking Based On Selection: 12
James Hammond
Metrics
H-Index
i10 Index
Citation Counts
31
47
3,451
Sustainable Development
Agriculture and Land Use
Decision Making
Innovation
Digital and Data.
Rankings
Ranking Based On Selection: 13
Polly Ericksen
Metrics
H-Index
i10 Index
Citation Counts
30
61
8,810
Rankings
Ranking Based On Selection: 14
Todd A Crane
Metrics
H-Index
i10 Index
Citation Counts
27
49
2,956
anthropology
science and technology studies
climate change adaptation and mitigation
agropastoralism
rural development
Rankings
Ranking Based On Selection: 15
Julie Ojango
Metrics
H-Index
i10 Index
Citation Counts
24
41
2,076
Animal Genetics and Breeding
Quantitative genetics
livestock production systems
developing countries
Rankings
Ranking Based On Selection: 16
Naftaly Githaka
Metrics
H-Index
i10 Index
Citation Counts
24
40
1,227
Ticks
parasites
live vaccines
zoonotic tick-borne viruses
climate change and disease patterns
Rankings
Ranking Based On Selection: 17
James Smith
Metrics
H-Index
i10 Index
Citation Counts
24
39
3,531
Rankings
Ranking Based On Selection: 18
Rankings
Ranking Based On Selection: 19
Alessandra Galie'
Metrics
H-Index
i10 Index
Citation Counts
20
34
1,615
Gender
livestock
crops
seed governance
food security
Rankings
Ranking Based On Selection: 20
Kelvin Mashisia Shikuku
Metrics
H-Index
i10 Index
Citation Counts
19
28
1,359
Rankings
Ranking Based On Selection: 21
Ally Okeyo Mwai
Metrics
H-Index
i10 Index
Citation Counts
19
26
1,598
Quantitative Genetics
Conservation Gentetics
Genomics
Animal Breeding
Rankings
Ranking Based On Selection: 22
Lucilla Steinaa
Metrics
H-Index
i10 Index
Citation Counts
19
33
1,664
Rankings
Ranking Based On Selection: 23
Wondmeneh Esatu Woldegiorgiss
Metrics
H-Index
i10 Index
Citation Counts
18
30
939
Animal Physiology
Poultry immunology
poultry husbandry and animal feed
poultry breeding and genetics
quantitative genetics
Rankings
Ranking Based On Selection: 24
Fiona Flintan
Metrics
H-Index
i10 Index
Citation Counts
18
37
1,492
Rangelands
pastoralism
gender
participatory action research
global advocacy/lobbying
Rankings
Ranking Based On Selection: 25
Kristina Roesel
Metrics
H-Index
i10 Index
Citation Counts
17
30
1,754
Rankings
Ranking Based On Selection: 26
Sonja Leitner
Metrics
H-Index
i10 Index
Citation Counts
17
24
1,346
Rankings
Ranking Based On Selection: 27
Dishon M Muloi
Metrics
H-Index
i10 Index
Citation Counts
16
18
1,037
Infectious Diseases
Bacterial Genomics
Antimicrobial Resistance
Public Health
Rankings
Ranking Based On Selection: 28
Nicholas Svitek
Metrics
H-Index
i10 Index
Citation Counts
16
22
1,079
Virology
Immunology
Vaccinology
Parasitology
Rankings
Ranking Based On Selection: 29
Mohamadou Lamine Fadiga
Metrics
H-Index
i10 Index
Citation Counts
15
24
829
Animal Health Economics
Value Chain Analysis
Demand and Sector Analysis
Feasibility Study
Rankings
Ranking Based On Selection: 30
Johanneke Dinie Hemmink
Metrics
H-Index
i10 Index
Citation Counts
14
17
629
Veterinary medicine
immunology
vaccinology
African swine fever
tick-borne diseases
Rankings
Ranking Based On Selection: 31
Anna Lacasta
Metrics
H-Index
i10 Index
Citation Counts
14
17
1,595
immunology
microbiology
livestock
african swine fever
east coast fever
Rankings
Ranking Based On Selection: 32
Renee Bullock
Metrics
H-Index
i10 Index
Citation Counts
13
14
551
Rankings
Ranking Based On Selection: 33
Tunde Adegoke Amole
Metrics
H-Index
i10 Index
Citation Counts
12
14
531
Livestock Feed and Forages
climate smart livestock
Africa
Rankings
Ranking Based On Selection: 34
Lillian Wayua Wambua
Metrics
H-Index
i10 Index
Citation Counts
11
13
393
One health
Zoonoses
Antimicrobial Resistance
Emerging infectious diseases
Molecular diagnostics
Rankings
Ranking Based On Selection: 35
Immaculate Omondi
Metrics
H-Index
i10 Index
Citation Counts
11
12
395
Impact Assessment
Economic valuation
choice Experiments
Rankings
Ranking Based On Selection: 36
Jason Sircely
Metrics
H-Index
i10 Index
Citation Counts
10
10
819
Rankings
Ranking Based On Selection: 37
Daniel Korir
Metrics
H-Index
i10 Index
Citation Counts
10
10
346
Rankings
Ranking Based On Selection: 38
Braja Bandhu Swain
Metrics
H-Index
i10 Index
Citation Counts
10
11
389
Agriculture
Livestock
Rural Development
Contract Farming
Rankings
Ranking Based On Selection: 39
Hussein M. Abkallo
Metrics
H-Index
i10 Index
Citation Counts
10
10
284
Molecular Biology
Synthetic Biology
CRISPR/Cas9
Vaccinology
Rankings
Ranking Based On Selection: 40
Luke Korir
Metrics
H-Index
i10 Index
Citation Counts
10
10
614
Rankings
Ranking Based On Selection: 41
Million Gebreyes
Metrics
H-Index
i10 Index
Citation Counts
9
9
209
Multi-stakeholder platforms facilitation
Scaling of Agricultural Innovations
Water-Energy-Food Nexus: Water Governance
Climat
Rankings
Ranking Based On Selection: 42
Tezira A Lore
Metrics
H-Index
i10 Index
Citation Counts
9
8
469
agricultural communication
food safety
One Health
research uptake
Rankings
Ranking Based On Selection: 43
Alice Anyango Onyango
Metrics
H-Index
i10 Index
Citation Counts
8
8
308
Rankings
Ranking Based On Selection: 44
Ekta H. Patel
Metrics
H-Index
i10 Index
Citation Counts
8
8
251
microbiology
genetics
developmental
Rankings
Ranking Based On Selection: 45
Esther Kihoro
Metrics
H-Index
i10 Index
Citation Counts
8
7
408
Agricultural economics and modelling
Climate Change and Inclusive Development
Gender
Rankings
Ranking Based On Selection: 46
Eliamoni Lyatuu
Metrics
H-Index
i10 Index
Citation Counts
8
7
209
Rankings
Ranking Based On Selection: 47
Caroline Bosire
Metrics
H-Index
i10 Index
Citation Counts
7
7
449
Natural Resource Management
Rankings
Ranking Based On Selection: 48
Philemon Chelanga
Metrics
H-Index
i10 Index
Citation Counts
7
4
158
Rankings
Ranking Based On Selection: 49
Getachew Dinede
Metrics
H-Index
i10 Index
Citation Counts
7
3
126
Epidemiology
food safety
zoonoses
outbreak investigation
public health
Rankings
Ranking Based On Selection: 50
Alice Njehu
Metrics
H-Index
i10 Index
Citation Counts
7
5
121
Rankings
Ranking Based On Selection: 51
Prosper Houessionon
Metrics
H-Index
i10 Index
Citation Counts
6
5
239
Agricultural Economics Development Economics Climat Smart Agriculture Impact Assessment Adoption studies
Rankings
Ranking Based On Selection: 52
Nelly Mukami Njiru
Metrics
H-Index
i10 Index
Citation Counts
6
5
135
Rankings
Ranking Based On Selection: 53
Richard Nyamota
Metrics
H-Index
i10 Index
Citation Counts
6
4
125
Infectious diseases
molecular epidemiology
genetic diversity
phylogenetics
biochemistry
Rankings
Ranking Based On Selection: 54
Mingyan Yu
Metrics
H-Index
i10 Index
Citation Counts
6
6
519
Animal breeding and genetics
Regeneration
Stem cell
Rankings
Ranking Based On Selection: 55
Birgit Habermann
Metrics
H-Index
i10 Index
Citation Counts
6
4
120
Adaptation to climate change
knowledge production
qualitative social research
Rankings
Ranking Based On Selection: 56
Tushar Kumar Dey
Metrics
H-Index
i10 Index
Citation Counts
5
5
206
Microbiology
Fermented food safety
Antimicrobial resistance
Rankings
Ranking Based On Selection: 57
Dorine Odongo
Metrics
H-Index
i10 Index
Citation Counts
4
2
59
Research communications
policy and governance
Rankings
Ranking Based On Selection: 58
Victor Onyango Odipo
Metrics
H-Index
i10 Index
Citation Counts
3
3
138
Earth Observation
Climate change
Ecological modelling
EO Big data analytics