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
Simon J More
veterinary epidemiology
veterinary medicine
animal health policy
Metrics
H-Index
i10 Index
Citation
67
309
18,443
* Rankings
Ranking Based On Selection :4
Trudee Fair
Mammalian Reproduction
Reproductive Immunology
Metrics
H-Index
i10 Index
Citation
54
95
11,235
* Rankings
Ranking Based On Selection :5
Grace Mulcahy
veterinary medicine
parasitology
parasite immunology
vaccines..
Metrics
H-Index
i10 Index
Citation
52
123
9,211
* Rankings
Ranking Based On Selection :7
Tommy Boland
Ruminant nutrition
sheep
sheep production
grazing
methane
Metrics
H-Index
i10 Index
Citation
43
110
6,299
* Rankings
Ranking Based On Selection :9
Bryan Markey
veterinary medicine
veterinary sciences
veterinary microbiology
microbiology
Metrics
H-Index
i10 Index
Citation
38
71
8,754
* Rankings
Ranking Based On Selection :10
Alan G Fahey
Breeding
Genetics
Statistics
Big Data
Agriculture
Metrics
H-Index
i10 Index
Citation
32
54
3,062
* Rankings
Ranking Based On Selection :15
Vivian Gath|Viv Gath
Nutrition
reproduction
husbandry
animal welfare
research.
Metrics
H-Index
i10 Index
Citation
17
22
735
* Rankings
Ranking Based On Selection :16
Locksley L Mcv Messam
Epidemiologic Study Design
Human-Animal Interactions
Diagnostic tests
Metrics
H-Index
i10 Index
Citation
16
18
1,230
Seamus Hoey
Veterinary Radiology
Veterinary Diagnostic Imaging
Metrics
H-Index
i10 Index
Citation
9
9
297
Catherine D,Helft|D'Helft C
Radiation safety
Diagnostic Imaging
Veterinary imaging
CT
MRI
Metrics
H-Index
i10 Index
Citation
9
8
234
Evangelia Stavroulaki
Veterinary medicine
internal medicine
gastroenterology
microbiome
metabolome
Metrics
H-Index
i10 Index
Citation
5
3
106
Maeve Louise Farrell
Antimicrobial Resistance
One Health
Biosecurity
Animal Health
Veterinary
Metrics
H-Index
i10 Index
Citation
5
3
88
Mihai Negru
Veterinary Pathology
Gene Therapy
Animal Model Research
Metrics
H-Index
i10 Index
Citation
4
2
147
Sue Rackard
higher education
veterinary medical education
curriculum
assessment
student engagement
Metrics
H-Index
i10 Index
Citation
3
1
30
Rankings
Ranking Based On Selection: 1
Simon J More
Metrics
H-Index
i10 Index
Citation Counts
67
309
18,443
veterinary epidemiology
veterinary medicine
animal health policy
Rankings
Ranking Based On Selection: 2
Torres Sweeney
Metrics
H-Index
i10 Index
Citation Counts
56
205
9,944
Rankings
Ranking Based On Selection: 3
Mark Crowe
Metrics
H-Index
i10 Index
Citation Counts
56
135
10,597
Rankings
Ranking Based On Selection: 4
Trudee Fair
Metrics
H-Index
i10 Index
Citation Counts
54
95
11,235
Rankings
Ranking Based On Selection: 5
Grace Mulcahy
Metrics
H-Index
i10 Index
Citation Counts
52
123
9,211
veterinary medicine
parasitology
parasite immunology
vaccines..
Rankings
Ranking Based On Selection: 6
Peter James O Brien
Metrics
H-Index
i10 Index
Citation Counts
45
105
9,082
Rankings
Ranking Based On Selection: 7
Tommy Boland
Metrics
H-Index
i10 Index
Citation Counts
43
110
6,299
Ruminant nutrition
sheep
sheep production
grazing
methane
Rankings
Ranking Based On Selection: 8
Finola Leonard
Metrics
H-Index
i10 Index
Citation Counts
40
82
12,957
Rankings
Ranking Based On Selection: 9
Bryan Markey
Metrics
H-Index
i10 Index
Citation Counts
38
71
8,754
veterinary medicine
veterinary sciences
veterinary microbiology
microbiology
Rankings
Ranking Based On Selection: 10
Alan G Fahey
Metrics
H-Index
i10 Index
Citation Counts
32
54
3,062
Rankings
Ranking Based On Selection: 11
Alison Hanlon
Metrics
H-Index
i10 Index
Citation Counts
31
70
3,042
Rankings
Ranking Based On Selection: 12
Lisa Katz
Metrics
H-Index
i10 Index
Citation Counts
25
48
2,281
Rankings
Ranking Based On Selection: 13
Daniel Crean
Metrics
H-Index
i10 Index
Citation Counts
18
21
1,246
Rankings
Ranking Based On Selection: 14
Vivienne Duggan
Metrics
H-Index
i10 Index
Citation Counts
17
24
797
Rankings
Ranking Based On Selection: 15
Vivian Gath|Viv Gath
Metrics
H-Index
i10 Index
Citation Counts
17
22
735
Nutrition
reproduction
husbandry
animal welfare
research.
Rankings
Ranking Based On Selection: 16
Locksley L Mcv Messam
Metrics
H-Index
i10 Index
Citation Counts
16
18
1,230
Epidemiologic Study Design
Human-Animal Interactions
Diagnostic tests
Rankings
Ranking Based On Selection: 17
Deirdre Campion
Metrics
H-Index
i10 Index
Citation Counts
15
21
579
Rankings
Ranking Based On Selection: 18
Seamus Hoey
Metrics
H-Index
i10 Index
Citation Counts
9
9
297
Rankings
Ranking Based On Selection: 19
Catherine D,Helft|D'Helft C
Metrics
H-Index
i10 Index
Citation Counts
9
8
234
Radiation safety
Diagnostic Imaging
Veterinary imaging
CT
MRI
Rankings
Ranking Based On Selection: 20
Xuanhui Xu
Metrics
H-Index
i10 Index
Citation Counts
7
6
174
Rankings
Ranking Based On Selection: 21
Maria Pia Munita
Metrics
H-Index
i10 Index
Citation Counts
6
5
175
Rankings
Ranking Based On Selection: 22
Evangelia Stavroulaki
Metrics
H-Index
i10 Index
Citation Counts
5
3
106
Veterinary medicine
internal medicine
gastroenterology
microbiome
metabolome
Rankings
Ranking Based On Selection: 23
Emmet Kelly
Metrics
H-Index
i10 Index
Citation Counts
5
3
86
Rankings
Ranking Based On Selection: 24
Maeve Louise Farrell
Metrics
H-Index
i10 Index
Citation Counts
5
3
88
Antimicrobial Resistance
One Health
Biosecurity
Animal Health
Veterinary
Rankings
Ranking Based On Selection: 25
Mihai Negru
Metrics
H-Index
i10 Index
Citation Counts
4
2
147
Veterinary Pathology
Gene Therapy
Animal Model Research
Rankings
Ranking Based On Selection: 26
Sue Rackard
Metrics
H-Index
i10 Index
Citation Counts
3
1
30
higher education
veterinary medical education
curriculum
assessment
student engagement