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
Joseph Renzulli
Gifted
creativity
talent development
school improvement
Metrics
H-Index
i10 Index
Citation
96
261
41,665
Del Siegle
gifted and talented
underachievement
technology
Metrics
H-Index
i10 Index
Citation
51
125
14,557
Brandi Simonsen
Special Education
Positive Behavioral Interventions and Supports
Metrics
H-Index
i10 Index
Citation
45
70
9,825
Michael Coyne
reading
vocabulary
intervention
literacy
Metrics
H-Index
i10 Index
Citation
45
71
8,768
Allison Lombardi
Disability
Career Development
Higher Education
Special Education
Transition
Metrics
H-Index
i10 Index
Citation
38
62
5,112
Catherine Little
gifted education
professional development
classroom questioning and discourse
Metrics
H-Index
i10 Index
Citation
25
36
3,828
Rankings
Ranking Based On Selection: 1
Joseph Renzulli
Metrics
H-Index
i10 Index
Citation Counts
96
261
41,665
Gifted
creativity
talent development
school improvement
Rankings
Ranking Based On Selection: 2
Del Siegle
Metrics
H-Index
i10 Index
Citation Counts
51
125
14,557
gifted and talented
underachievement
technology
Rankings
Ranking Based On Selection: 3
Brandi Simonsen
Metrics
H-Index
i10 Index
Citation Counts
45
70
9,825
Special Education
Positive Behavioral Interventions and Supports
Rankings
Ranking Based On Selection: 4
Michael Coyne
Metrics
H-Index
i10 Index
Citation Counts
45
71
8,768
reading
vocabulary
intervention
literacy
Rankings
Ranking Based On Selection: 5
Allison Lombardi
Metrics
H-Index
i10 Index
Citation Counts
38
62
5,112
Disability
Career Development
Higher Education
Special Education
Transition
Rankings
Ranking Based On Selection: 6
Catherine Little
Metrics
H-Index
i10 Index
Citation Counts
25
36
3,828
gifted education
professional development
classroom questioning and discourse