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" (888,752 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
Okechukwu Idumah Okogwu
Water quality
Toxicology
Ecology
Hydrobiology
Sustainability
Metrics
H-Index
i10 Index
Citation
14
20
767
* Rankings
Ranking Based On Selection: 2
Ufere N. Uka
Ecology
Ecophysiology
Hydrobotany
Phytoremediation .
Metrics
H-Index
i10 Index
Citation
12
15
615
* Rankings
Ranking Based On Selection: 3
Catherine V. Nnamani
Botany
Plant Systematics
Palynology
Conservation Biology
Molecular Biology & Climate Change
Metrics
H-Index
i10 Index
Citation
12
16
627
* Rankings
Ranking Based On Selection: 4
Michael Okpara Elom
Parasitology
Zoonoses
One Health
NTDs
Public Health
Metrics
H-Index
i10 Index
Citation
11
11
560
Rankings
Ranking Based On Selection: 1
Okechukwu Idumah Okogwu
Metrics
H-Index
i10 Index
Citation Counts
14
20
767
Water quality
Toxicology
Ecology
Hydrobiology
Sustainability
Rankings
Ranking Based On Selection: 2
Ufere N. Uka
Metrics
H-Index
i10 Index
Citation Counts
12
15
615
Ecology
Ecophysiology
Hydrobotany
Phytoremediation .
Rankings
Ranking Based On Selection: 3
Catherine V. Nnamani
Metrics
H-Index
i10 Index
Citation Counts
12
16
627
Botany
Plant Systematics
Palynology
Conservation Biology
Molecular Biology & Climate Change
Rankings
Ranking Based On Selection: 4
Michael Okpara Elom
Metrics
H-Index
i10 Index
Citation Counts
11
11
560
Parasitology
Zoonoses
One Health
NTDs
Public Health
Rankings
Ranking Based On Selection: 5
Ani, Ogonna Christiana
Metrics
H-Index
i10 Index
Citation Counts
6
6
307
Zoology
Parasitology
Immunology and Virology
Rankings
Ranking Based On Selection: 6
Chidinma Blessing Anyanwu|Egwuom Godswill Blessing C
Metrics
H-Index
i10 Index
Citation Counts
3
1
23