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.

Ines Batinic Haberle
Bioinorganic chemistry
tumor biology
drug development
drug mechanism of action
Metrics
H-Index
i10 Index
Citation
72
216
23,176
S Yousuf Zafar
Medical Oncology
Health Care Delivery Research
Metrics
H-Index
i10 Index
Citation
49
107
9,764
Mark Oldham
radiation therapy
dosimetry
optical
imaging
tomography
Metrics
H-Index
i10 Index
Citation
48
106
8,603
Gregory Palmer
Biomedical Optics
Cancer
Radiation Therapy
Microscopy
Imaging
Metrics
H-Index
i10 Index
Citation
39
81
6,610
* Rankings
Ranking Based On Selection :10
Michael R Harrison
genitourinary (GU) medical oncology
kidney cancer
bladder cancer
kidney cancer
exercise-oncology
Metrics
H-Index
i10 Index
Citation
37
81
7,479
* Rankings
Ranking Based On Selection :11
James Bowsher
molecular imaging
functional imaging
radiation therapy
onboard imaging
image reconstruction
Metrics
H-Index
i10 Index
Citation
29
68
3,438
* Rankings
Ranking Based On Selection :12
Colin Champ
Cancer
Diet
Nutrition
Exercise
Ketogenic Diet
Metrics
H-Index
i10 Index
Citation
26
48
2,624
Scott R Floyd
DNA damage
radiation therapy
brain tumor
alzheimers
stroke
Metrics
H-Index
i10 Index
Citation
25
37
3,919
Yvonne Mowery
Head and neck radiation therapy
mouse models of cancer
skin cancer
immunotherapy
Metrics
H-Index
i10 Index
Citation
24
44
2,464
Neville Eclov
Medical Physics
Radiation Oncology
Positron Emission Tomography
Metrics
H-Index
i10 Index
Citation
12
12
2,851
Rankings
Ranking Based On Selection: 1
Gary Lyman
Metrics
H-Index
i10 Index
Citation Counts
138
551
97,730
Rankings
Ranking Based On Selection: 2
Fang Fang Yin
Metrics
H-Index
i10 Index
Citation Counts
75
301
23,139
Rankings
Ranking Based On Selection: 3
Ines Batinic Haberle
Metrics
H-Index
i10 Index
Citation Counts
72
216
23,176
Bioinorganic chemistry
tumor biology
drug development
drug mechanism of action
Rankings
Ranking Based On Selection: 4
W Robert Lee
Metrics
H-Index
i10 Index
Citation Counts
64
167
15,465
Rankings
Ranking Based On Selection: 5
John Kirkpatrick
Metrics
H-Index
i10 Index
Citation Counts
55
113
13,345
Rankings
Ranking Based On Selection: 6
S Yousuf Zafar
Metrics
H-Index
i10 Index
Citation Counts
49
107
9,764
Rankings
Ranking Based On Selection: 7
Mark Oldham
Metrics
H-Index
i10 Index
Citation Counts
48
106
8,603
radiation therapy
dosimetry
optical
imaging
tomography
Rankings
Ranking Based On Selection: 8
Andrew B Nixon
Metrics
H-Index
i10 Index
Citation Counts
40
99
7,691
Rankings
Ranking Based On Selection: 9
Gregory Palmer
Metrics
H-Index
i10 Index
Citation Counts
39
81
6,610
Biomedical Optics
Cancer
Radiation Therapy
Microscopy
Imaging
Rankings
Ranking Based On Selection: 10
Michael R Harrison
Metrics
H-Index
i10 Index
Citation Counts
37
81
7,479
genitourinary (GU) medical oncology
kidney cancer
bladder cancer
kidney cancer
exercise-oncology
Rankings
Ranking Based On Selection: 11
James Bowsher
Metrics
H-Index
i10 Index
Citation Counts
29
68
3,438
molecular imaging
functional imaging
radiation therapy
onboard imaging
image reconstruction
Rankings
Ranking Based On Selection: 12
Colin Champ
Metrics
H-Index
i10 Index
Citation Counts
26
48
2,624
Rankings
Ranking Based On Selection: 13
Scott R Floyd
Metrics
H-Index
i10 Index
Citation Counts
25
37
3,919
DNA damage
radiation therapy
brain tumor
alzheimers
stroke
Rankings
Ranking Based On Selection: 14
Yvonne Mowery
Metrics
H-Index
i10 Index
Citation Counts
24
44
2,464
Head and neck radiation therapy
mouse models of cancer
skin cancer
immunotherapy
Rankings
Ranking Based On Selection: 15
Andrew Barbour
Metrics
H-Index
i10 Index
Citation Counts
15
20
1,173
Rankings
Ranking Based On Selection: 16
David Carpenter
Metrics
H-Index
i10 Index
Citation Counts
13
16
679
Rankings
Ranking Based On Selection: 17
Neville Eclov
Metrics
H-Index
i10 Index
Citation Counts
12
12
2,851
Medical Physics
Radiation Oncology
Positron Emission Tomography
Rankings
Ranking Based On Selection: 18
Fahmin Basher
Metrics
H-Index
i10 Index
Citation Counts
9
9
439
Rankings
Ranking Based On Selection: 19
Alexandra Bennion
Metrics
H-Index
i10 Index
Citation Counts
2
1
26