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" (870,053 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
Augustine Ayantunde
Sustainable agriculture
rural development
climate change
animal nutrition
feed resources
Metrics
H-Index
i10 Index
Citation
34
65
3,553
* Rankings
Ranking Based On Selection: 3
Naftaly Githaka
Ticks
parasites
live vaccines
zoonotic tick-borne viruses
climate change and disease patterns
Metrics
H-Index
i10 Index
Citation
24
43
1,329
* Rankings
Ranking Based On Selection: 4
Sonja Leitner
nutrient circularity
climate change
greenhouse gases
livestock systems
Africa
Metrics
H-Index
i10 Index
Citation
19
25
1,474
* Rankings
Ranking Based On Selection: 5
Daniel Korir
Livestock production
ruminant nutrition
enteric methane mitigation
GHG inventory
Metrics
H-Index
i10 Index
Citation
10
10
389
Rankings
Ranking Based On Selection: 1
Augustine Ayantunde
Metrics
H-Index
i10 Index
Citation Counts
34
65
3,553
Sustainable agriculture
rural development
climate change
animal nutrition
feed resources
Rankings
Ranking Based On Selection: 2
Polly Ericksen
Metrics
H-Index
i10 Index
Citation Counts
31
61
9,280
Rankings
Ranking Based On Selection: 3
Naftaly Githaka
Metrics
H-Index
i10 Index
Citation Counts
24
43
1,329
Ticks
parasites
live vaccines
zoonotic tick-borne viruses
climate change and disease patterns
Rankings
Ranking Based On Selection: 4
Sonja Leitner
Metrics
H-Index
i10 Index
Citation Counts
19
25
1,474
nutrient circularity
climate change
greenhouse gases
livestock systems
Africa
Rankings
Ranking Based On Selection: 5
Daniel Korir
Metrics
H-Index
i10 Index
Citation Counts
10
10
389
Livestock production
ruminant nutrition
enteric methane mitigation
GHG inventory
Rankings
Ranking Based On Selection: 6
Alice Anyango Onyango
Metrics
H-Index
i10 Index
Citation Counts
9
9
346
Rankings
Ranking Based On Selection: 7
Birgit Habermann
Metrics
H-Index
i10 Index
Citation Counts
6
5
134
Adaptation to climate change
knowledge production
qualitative social research
Rankings
Ranking Based On Selection: 8
Victor Onyango Odipo
Metrics
H-Index
i10 Index
Citation Counts
3
3
146
Earth Observation
Climate change
Ecological modelling
EO Big data analytics