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 rankings in world, region, country, and university are in Beta version and are subject to real-time updates, since the subject field “Others” (1,121,291 scientists profile whose branch cannot be determined, not yet edited or determined) is excluded. These rankings will dynamically evolve in real time as the “Others” profiles are revised and classified. Please note that. Subjects indicated as “ * others ” will not be included in the ranking by regions and subjects.

* Rankings
Ranking Based On Selection: 1
Anastasios A Economides
Mobile Learning
Blended Learning
Collaborative Learning
Digital Competence
Internet of Thing
Metrics
 
H-Index
i10 Index
Citation
54
170
11,668
* Rankings
Ranking Based On Selection: 2
Zacharias Frontistis
Environmental Engineering
Wastewater Engineering
Advanced Oxidation Processes
photocatalysis
environmental catalysi
Metrics
 
H-Index
i10 Index
Citation
51
131
7,300
* Rankings
Ranking Based On Selection: 4
Konstantinos Tarabanis
Digital Government
Information Systems for Manufacturin
Metrics
 
H-Index
i10 Index
Citation
46
168
8,971
* Rankings
Ranking Based On Selection: 5
Maria A Goula
Design and development of heterogeneous catalysts
Environmental catalysis (NOx
SO2
H2S
Metrics
 
H-Index
i10 Index
Citation
45
89
7,222
* Rankings
Ranking Based On Selection: 6
Alexander Chatzigeorgiou
Software Engineering
Object-Oriented Design
Software Maintenance
Software Evolution
Technical Deb
Metrics
 
H-Index
i10 Index
Citation
45
131
7,839
* Rankings
Ranking Based On Selection: 7
Fotis Kitsios
Strategy
New Service Development
Innovation
Digital Transformation
Entrepreneurshi
Metrics
 
H-Index
i10 Index
Citation
40
109
6,010
* Rankings
Ranking Based On Selection: 8
Nikolaos Charisiou
Heterogeneous catalysis
Catalyst synthesis and characterization
Hydrogen production
Reformin
Metrics
 
H-Index
i10 Index
Citation
38
71
5,331
* Rankings
Ranking Based On Selection: 9
Konstantinos E Psannis
Networking & Telecommunications
Artificial Intelligence & Image Processing
Com/Info Theor
Metrics
 
H-Index
i10 Index
Citation
38
102
8,433
* Rankings
Ranking Based On Selection: 10
Markos G Tsipouras
Biomedical Signal Processing
Medical Informatics
Neuroscience
Artificial Intelligence
Health A
Metrics
 
H-Index
i10 Index
Citation
37
81
7,009
* Rankings
Ranking Based On Selection: 12
Theodore Panagiotidis
Econometrics
Time Series Econometrics
Macroeconometrics
Financial Econometric
Metrics
 
H-Index
i10 Index
Citation
35
73
4,565
* Rankings
Ranking Based On Selection: 13
George Marnellos
Heterogeneous catalysis
Electrochemical engineering
Biomass thermochemical conversio
Metrics
 
H-Index
i10 Index
Citation
35
69
3,775
* Rankings
Ranking Based On Selection: 14
Efthimios Tambouris
eGovernment
eParticipation
eLearning
eHealth
Information System
Metrics
 
H-Index
i10 Index
Citation
35
98
5,111
* Rankings
Ranking Based On Selection: 15
Stilianos Fountas|Steve Fountas
Econometrics
Applied Macroeconomics
International Financ
Metrics
 
H-Index
i10 Index
Citation
33
51
3,919
* Rankings
Ranking Based On Selection: 16
Maro Vlachopoulou
Information systems and E-business
E-mobile marketing
social media marketing
social networks
ICT innovatio
Metrics
 
H-Index
i10 Index
Citation
32
68
5,183
* Rankings
Ranking Based On Selection: 17
Manolis Souliotis
Renewable Energy
Solar Energy
Sustainability
Environmental Engineerin
Metrics
 
H-Index
i10 Index
Citation
32
49
3,893
* Rankings
Ranking Based On Selection: 18
Labrianidis Lois
1. highly skilled migration (Brain drain) 2. economic consequences of immigration
Metrics
 
H-Index
i10 Index
Citation
31
59
2,738
* Rankings
Ranking Based On Selection: 19
Lazaros C Triarhou
Neurobiology
Neuroanatomy
Neurohistology
Neuropatholog
Metrics
 
H-Index
i10 Index
Citation
31
100
4,540
* Rankings
Ranking Based On Selection: 20
Dimitris Hristu Varsakelis
Machine learning
Optimization
Decision-making
Automatic Contro
Metrics
 
H-Index
i10 Index
Citation
29
48
3,549
* Rankings
Ranking Based On Selection: 22
Stelios Xinogalos
Programming Environments
Programming Techniques
Serious Games
Computer Science Educatio
Metrics
 
H-Index
i10 Index
Citation
28
71
2,984
* Rankings
Ranking Based On Selection: 23
Nikolaos Pellas, Νικόλαος Πέλλας
Educational technology
Computational thinking
AI in education
VR/AR in educatio
Metrics
 
H-Index
i10 Index
Citation
28
41
3,993
* Rankings
Ranking Based On Selection: 24
Konstantinos G Margaritis
Parallel and Distributed Computing
Intelligent Systems
Computer Mathematic
Metrics
 
H-Index
i10 Index
Citation
28
80
4,346
* Rankings
Ranking Based On Selection: 25
Georgios Christoforidis
Electrical Power engineering
Renewable Energy Sources
Electromagnetic Compatibilit
Metrics
 
H-Index
i10 Index
Citation
27
65
2,459
Rankings
Ranking Based On Selection: 1
Anastasios A Economides
Metrics
 
H-Index
i10 Index
Citation Counts
54
170
11,668
Mobile Learning
Blended Learning
Collaborative Learning
Digital Competence
Internet of Thing
Rankings
Ranking Based On Selection: 2
Zacharias Frontistis
Metrics
 
H-Index
i10 Index
Citation Counts
51
131
7,300
Environmental Engineering
Wastewater Engineering
Advanced Oxidation Processes
photocatalysis
environmental catalysi
Rankings
Ranking Based On Selection: 3
Panagiotis Sarigiannidis
Metrics
 
H-Index
i10 Index
Citation Counts
48
172
11,157
Rankings
Ranking Based On Selection: 4
Konstantinos Tarabanis
Metrics
 
H-Index
i10 Index
Citation Counts
46
168
8,971
Digital Government
Information Systems for Manufacturin
Rankings
Ranking Based On Selection: 5
Maria A Goula
Metrics
 
H-Index
i10 Index
Citation Counts
45
89
7,222
Design and development of heterogeneous catalysts
Environmental catalysis (NOx
SO2
H2S
Rankings
Ranking Based On Selection: 6
Alexander Chatzigeorgiou
Metrics
 
H-Index
i10 Index
Citation Counts
45
131
7,839
Software Engineering
Object-Oriented Design
Software Maintenance
Software Evolution
Technical Deb
Rankings
Ranking Based On Selection: 7
Fotis Kitsios
Metrics
 
H-Index
i10 Index
Citation Counts
40
109
6,010
Strategy
New Service Development
Innovation
Digital Transformation
Entrepreneurshi
Rankings
Ranking Based On Selection: 8
Nikolaos Charisiou
Metrics
 
H-Index
i10 Index
Citation Counts
38
71
5,331
Heterogeneous catalysis
Catalyst synthesis and characterization
Hydrogen production
Reformin
Rankings
Ranking Based On Selection: 9
Konstantinos E Psannis
Metrics
 
H-Index
i10 Index
Citation Counts
38
102
8,433
Networking & Telecommunications
Artificial Intelligence & Image Processing
Com/Info Theor
Rankings
Ranking Based On Selection: 10
Markos G Tsipouras
Metrics
 
H-Index
i10 Index
Citation Counts
37
81
7,009
Biomedical Signal Processing
Medical Informatics
Neuroscience
Artificial Intelligence
Health A
Rankings
Ranking Based On Selection: 11
Theodoros Theodoulidis
Metrics
 
H-Index
i10 Index
Citation Counts
36
68
3,482
Rankings
Ranking Based On Selection: 12
Theodore Panagiotidis
Metrics
 
H-Index
i10 Index
Citation Counts
35
73
4,565
Econometrics
Time Series Econometrics
Macroeconometrics
Financial Econometric
Rankings
Ranking Based On Selection: 13
George Marnellos
Metrics
 
H-Index
i10 Index
Citation Counts
35
69
3,775
Heterogeneous catalysis
Electrochemical engineering
Biomass thermochemical conversio
Rankings
Ranking Based On Selection: 14
Efthimios Tambouris
Metrics
 
H-Index
i10 Index
Citation Counts
35
98
5,111
eGovernment
eParticipation
eLearning
eHealth
Information System
Rankings
Ranking Based On Selection: 15
Stilianos Fountas|Steve Fountas
Metrics
 
H-Index
i10 Index
Citation Counts
33
51
3,919
Econometrics
Applied Macroeconomics
International Financ
Rankings
Ranking Based On Selection: 16
Maro Vlachopoulou
Metrics
 
H-Index
i10 Index
Citation Counts
32
68
5,183
Information systems and E-business
E-mobile marketing
social media marketing
social networks
ICT innovatio
Rankings
Ranking Based On Selection: 17
Manolis Souliotis
Metrics
 
H-Index
i10 Index
Citation Counts
32
49
3,893
Renewable Energy
Solar Energy
Sustainability
Environmental Engineerin
Rankings
Ranking Based On Selection: 18
Labrianidis Lois
Metrics
 
H-Index
i10 Index
Citation Counts
31
59
2,738
1. highly skilled migration (Brain drain) 2. economic consequences of immigration
Rankings
Ranking Based On Selection: 19
Lazaros C Triarhou
Metrics
 
H-Index
i10 Index
Citation Counts
31
100
4,540
Neurobiology
Neuroanatomy
Neurohistology
Neuropatholog
Rankings
Ranking Based On Selection: 20
Dimitris Hristu Varsakelis
Metrics
 
H-Index
i10 Index
Citation Counts
29
48
3,549
Machine learning
Optimization
Decision-making
Automatic Contro
Rankings
Ranking Based On Selection: 21
Fotios Chatzitheodoridis
Metrics
 
H-Index
i10 Index
Citation Counts
28
70
2,323
Rankings
Ranking Based On Selection: 22
Stelios Xinogalos
Metrics
 
H-Index
i10 Index
Citation Counts
28
71
2,984
Programming Environments
Programming Techniques
Serious Games
Computer Science Educatio
Rankings
Ranking Based On Selection: 23
Nikolaos Pellas, Νικόλαος Πέλλας
Metrics
 
H-Index
i10 Index
Citation Counts
28
41
3,993
Educational technology
Computational thinking
AI in education
VR/AR in educatio
Rankings
Ranking Based On Selection: 24
Konstantinos G Margaritis
Metrics
 
H-Index
i10 Index
Citation Counts
28
80
4,346
Parallel and Distributed Computing
Intelligent Systems
Computer Mathematic
Rankings
Ranking Based On Selection: 25
Georgios Christoforidis
Metrics
 
H-Index
i10 Index
Citation Counts
27
65
2,459
Electrical Power engineering
Renewable Energy Sources
Electromagnetic Compatibilit