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 :3
Alan Duncan
livestock nutrition
smallholder
agriculture
Africa
Asia
Metrics
H-Index
i10 Index
Citation
50
113
7,815
* 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
40
117
5,554
* Rankings
Ranking Based On Selection :8
Hung Nguyen-Viet
One Health
Ecohealth
Food safety
Risk Assessment
Livestock
Metrics
H-Index
i10 Index
Citation
38
89
4,260
* 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
64
3,449
* 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
72
4,013
* Rankings
Ranking Based On Selection :13
James Hammond
Sustainable Development
Agriculture and Land Use
Decision Making
Innovation
Digital and Data.
Metrics
H-Index
i10 Index
Citation
31
47
3,641
* 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
28
50
3,104
* 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
42
2,135
* 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
41
1,273
* Rankings
Ranking Based On Selection :18
Alessandra Galie'
Gender
livestock
crops
seed governance
food security
Metrics
H-Index
i10 Index
Citation
21
36
1,737
* Rankings
Ranking Based On Selection :22
Wondmeneh Esatu Woldegiorgiss
Animal Physiology
Poultry immunology
poultry husbandry and animal feed
poultry breeding and genetics
quantitative genetics
Metrics
H-Index
i10 Index
Citation
19
31
1,003
* Rankings
Ranking Based On Selection :23
Ally Okeyo Mwai
Quantitative Genetics
Conservation Gentetics
Genomics
Animal Breeding
Metrics
H-Index
i10 Index
Citation
19
26
1,643
* Rankings
Ranking Based On Selection :24
Anna Lacasta
immunology
microbiology
livestock
african swine fever
east coast fever
Metrics
H-Index
i10 Index
Citation
19
23
1,910
* Rankings
Ranking Based On Selection :25
Fiona Flintan
Rangelands
pastoralism
gender
participatory action research
global advocacy/lobbying
Metrics
H-Index
i10 Index
Citation
19
37
1,544
* Rankings
Ranking Based On Selection :27
Sonja Leitner
nutrient circularity
climate change
greenhouse gases
livestock systems
Africa
Metrics
H-Index
i10 Index
Citation
18
25
1,424
* Rankings
Ranking Based On Selection :28
Dishon M Muloi
Infectious Diseases
Bacterial Genomics
Antimicrobial Resistance
Public Health
Metrics
H-Index
i10 Index
Citation
17
20
1,120
* Rankings
Ranking Based On Selection :29
Nicholas Svitek
Virology
Immunology
Vaccinology
Parasitology
Metrics
H-Index
i10 Index
Citation
17
23
1,124
* 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
15
19
677
* Rankings
Ranking Based On Selection :31
Mohamadou Lamine Fadiga
Animal Health Economics
Value Chain Analysis
Demand and Sector Analysis
Feasibility Study
Metrics
H-Index
i10 Index
Citation
15
23
830
* 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
12
13
420
* Rankings
Ranking Based On Selection :36
Immaculate Omondi
Impact Assessment
Economic valuation
choice Experiments
Metrics
H-Index
i10 Index
Citation
11
12
408
* Rankings
Ranking Based On Selection :38
Daniel Korir
Livestock production
ruminant nutrition
enteric methane mitigation
GHG inventory
Metrics
H-Index
i10 Index
Citation
10
10
379
* 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
224
* Rankings
Ranking Based On Selection :43
Esther Kihoro
Agricultural economics and modelling
Climate Change and Inclusive Development
Gender
Metrics
H-Index
i10 Index
Citation
9
7
434
* Rankings
Ranking Based On Selection :44
Tezira A Lore
agricultural communication
food safety
One Health
research uptake
Metrics
H-Index
i10 Index
Citation
9
9
478
* Rankings
Ranking Based On Selection :48
Prosper Houessionon
Agricultural Economics Development Economics Climat Smart Agriculture Impact Assessment Adoption studies
Metrics
H-Index
i10 Index
Citation
7
5
261
* Rankings
Ranking Based On Selection :53
Richard Nyamota
Infectious diseases
molecular epidemiology
genetic diversity
phylogenetics
biochemistry
Metrics
H-Index
i10 Index
Citation
6
4
142
* Rankings
Ranking Based On Selection :56
Tushar Kumar Dey
Microbiology
Fermented food safety
Antimicrobial resistance
Metrics
H-Index
i10 Index
Citation
5
5
214
* 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
110
307
51,631
Rankings
Ranking Based On Selection: 2
Mark Van Wijk
Metrics
H-Index
i10 Index
Citation Counts
71
140
16,233
Rankings
Ranking Based On Selection: 3
Alan Duncan
Metrics
H-Index
i10 Index
Citation Counts
50
113
7,815
livestock nutrition
smallholder
agriculture
Africa
Asia
Rankings
Ranking Based On Selection: 4
Michael Bluemmel
Metrics
H-Index
i10 Index
Citation Counts
45
148
14,285
Rankings
Ranking Based On Selection: 5
Kai Sonder
Metrics
H-Index
i10 Index
Citation Counts
41
82
6,060
Rankings
Ranking Based On Selection: 6
Johanna Lindahl
Metrics
H-Index
i10 Index
Citation Counts
40
117
5,554
Emerging infectious diseases
vector-borne diseases
zoonotic diseases
food safety
food security
Rankings
Ranking Based On Selection: 8
Hung Nguyen-Viet
Metrics
H-Index
i10 Index
Citation Counts
38
89
4,260
One Health
Ecohealth
Food safety
Risk Assessment
Livestock
Rankings
Ranking Based On Selection: 9
Solomon Gizaw
Metrics
H-Index
i10 Index
Citation Counts
36
86
4,008
Rankings
Ranking Based On Selection: 10
Augustine Ayantunde
Metrics
H-Index
i10 Index
Citation Counts
33
64
3,449
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
72
4,013
livestock
farm level economics
gender
value chain development
developing countries
Rankings
Ranking Based On Selection: 12
Polly Ericksen
Metrics
H-Index
i10 Index
Citation Counts
31
60
9,093
Rankings
Ranking Based On Selection: 13
James Hammond
Metrics
H-Index
i10 Index
Citation Counts
31
47
3,641
Sustainable Development
Agriculture and Land Use
Decision Making
Innovation
Digital and Data.
Rankings
Ranking Based On Selection: 14
Todd A Crane
Metrics
H-Index
i10 Index
Citation Counts
28
50
3,104
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
42
2,135
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
41
1,273
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
42
3,906
Rankings
Ranking Based On Selection: 18
Alessandra Galie'
Metrics
H-Index
i10 Index
Citation Counts
21
36
1,737
Gender
livestock
crops
seed governance
food security
Rankings
Ranking Based On Selection: 19
Rankings
Ranking Based On Selection: 20
Kelvin Mashisia Shikuku
Metrics
H-Index
i10 Index
Citation Counts
20
28
1,453
Development Economics
Agricultural Economics
Rankings
Ranking Based On Selection: 21
Lucilla Steinaa
Metrics
H-Index
i10 Index
Citation Counts
20
35
1,705
Rankings
Ranking Based On Selection: 22
Wondmeneh Esatu Woldegiorgiss
Metrics
H-Index
i10 Index
Citation Counts
19
31
1,003
Animal Physiology
Poultry immunology
poultry husbandry and animal feed
poultry breeding and genetics
quantitative genetics
Rankings
Ranking Based On Selection: 23
Ally Okeyo Mwai
Metrics
H-Index
i10 Index
Citation Counts
19
26
1,643
Quantitative Genetics
Conservation Gentetics
Genomics
Animal Breeding
Rankings
Ranking Based On Selection: 24
Anna Lacasta
Metrics
H-Index
i10 Index
Citation Counts
19
23
1,910
immunology
microbiology
livestock
african swine fever
east coast fever
Rankings
Ranking Based On Selection: 25
Fiona Flintan
Metrics
H-Index
i10 Index
Citation Counts
19
37
1,544
Rangelands
pastoralism
gender
participatory action research
global advocacy/lobbying
Rankings
Ranking Based On Selection: 26
Kristina Roesel
Metrics
H-Index
i10 Index
Citation Counts
18
30
1,834
Rankings
Ranking Based On Selection: 27
Sonja Leitner
Metrics
H-Index
i10 Index
Citation Counts
18
25
1,424
nutrient circularity
climate change
greenhouse gases
livestock systems
Africa
Rankings
Ranking Based On Selection: 28
Dishon M Muloi
Metrics
H-Index
i10 Index
Citation Counts
17
20
1,120
Infectious Diseases
Bacterial Genomics
Antimicrobial Resistance
Public Health
Rankings
Ranking Based On Selection: 29
Nicholas Svitek
Metrics
H-Index
i10 Index
Citation Counts
17
23
1,124
Virology
Immunology
Vaccinology
Parasitology
Rankings
Ranking Based On Selection: 30
Johanneke Dinie Hemmink
Metrics
H-Index
i10 Index
Citation Counts
15
19
677
Veterinary medicine
immunology
vaccinology
African swine fever
tick-borne diseases
Rankings
Ranking Based On Selection: 31
Mohamadou Lamine Fadiga
Metrics
H-Index
i10 Index
Citation Counts
15
23
830
Animal Health Economics
Value Chain Analysis
Demand and Sector Analysis
Feasibility Study
Rankings
Ranking Based On Selection: 32
Renee Bullock
Metrics
H-Index
i10 Index
Citation Counts
13
14
595
Rankings
Ranking Based On Selection: 33
Tunde Adegoke Amole
Metrics
H-Index
i10 Index
Citation Counts
12
15
575
Livestock Feed and Forages
climate smart livestock
Africa
Rankings
Ranking Based On Selection: 34
Lillian Wayua Wambua
Metrics
H-Index
i10 Index
Citation Counts
12
13
420
One health
Zoonoses
Antimicrobial Resistance
Emerging infectious diseases
Molecular diagnostics
Rankings
Ranking Based On Selection: 35
Hussein M. Abkallo
Metrics
H-Index
i10 Index
Citation Counts
11
11
311
Molecular Biology
Synthetic Biology
CRISPR/Cas9
Vaccinology
Rankings
Ranking Based On Selection: 36
Immaculate Omondi
Metrics
H-Index
i10 Index
Citation Counts
11
12
408
Impact Assessment
Economic valuation
choice Experiments
Rankings
Ranking Based On Selection: 37
Jason Sircely
Metrics
H-Index
i10 Index
Citation Counts
10
10
839
Rankings
Ranking Based On Selection: 38
Daniel Korir
Metrics
H-Index
i10 Index
Citation Counts
10
10
379
Livestock production
ruminant nutrition
enteric methane mitigation
GHG inventory
Rankings
Ranking Based On Selection: 39
Braja Bandhu Swain
Metrics
H-Index
i10 Index
Citation Counts
10
11
411
Agriculture
Livestock
Rural Development
Contract Farming
Rankings
Ranking Based On Selection: 40
Luke Korir
Metrics
H-Index
i10 Index
Citation Counts
10
10
647
Rankings
Ranking Based On Selection: 41
Million Gebreyes
Metrics
H-Index
i10 Index
Citation Counts
9
9
224
Multi-stakeholder platforms facilitation
Scaling of Agricultural Innovations
Water-Energy-Food Nexus: Water Governance
Climat
Rankings
Ranking Based On Selection: 42
Alice Anyango Onyango
Metrics
H-Index
i10 Index
Citation Counts
9
8
333
Rankings
Ranking Based On Selection: 43
Esther Kihoro
Metrics
H-Index
i10 Index
Citation Counts
9
7
434
Agricultural economics and modelling
Climate Change and Inclusive Development
Gender
Rankings
Ranking Based On Selection: 44
Tezira A Lore
Metrics
H-Index
i10 Index
Citation Counts
9
9
478
agricultural communication
food safety
One Health
research uptake
Rankings
Ranking Based On Selection: 45
Ekta H. Patel
Metrics
H-Index
i10 Index
Citation Counts
8
8
269
microbiology
genetics
developmental
Rankings
Ranking Based On Selection: 46
Eliamoni Lyatuu
Metrics
H-Index
i10 Index
Citation Counts
8
8
232
Rankings
Ranking Based On Selection: 47
Caroline Bosire
Metrics
H-Index
i10 Index
Citation Counts
7
7
464
Natural Resource Management
Rankings
Ranking Based On Selection: 48
Prosper Houessionon
Metrics
H-Index
i10 Index
Citation Counts
7
5
261
Agricultural Economics Development Economics Climat Smart Agriculture Impact Assessment Adoption studies
Rankings
Ranking Based On Selection: 49
Philemon Chelanga
Metrics
H-Index
i10 Index
Citation Counts
7
5
172
Rankings
Ranking Based On Selection: 50
Getachew Dinede
Metrics
H-Index
i10 Index
Citation Counts
7
5
138
Epidemiology
food safety
zoonoses
outbreak investigation
public health
Rankings
Ranking Based On Selection: 51
Alice Njehu
Metrics
H-Index
i10 Index
Citation Counts
7
5
121
Rankings
Ranking Based On Selection: 52
Nelly Mukami Njiru
Metrics
H-Index
i10 Index
Citation Counts
6
6
149
Rankings
Ranking Based On Selection: 53
Richard Nyamota
Metrics
H-Index
i10 Index
Citation Counts
6
4
142
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
521
Animal breeding and genetics
Regeneration
Stem cell
Rankings
Ranking Based On Selection: 55
Birgit Habermann
Metrics
H-Index
i10 Index
Citation Counts
6
4
126
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
214
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
140
Earth Observation
Climate change
Ecological modelling
EO Big data analytics