Citation Rankings
Highly Cited Researchers

Highly Cited Researchers 803 Scientists Citation Rankings - 2025

The Citation Rankings (Highly Cited Researchers) list highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the Scientists Last 6 Years Citation Index, Universities Total Citations Rankings 2025, and Universities Last 6 Years Citations Rankings 2025.

* Total Citation Counts Rankings
Ranking Based On Selection: 1
Greece
Panos Vardas
cardiovascular medicine/ Management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
155,699
62,238
0.400
* Total Citation Counts Rankings
Ranking Based On Selection: 2
Greece
Miltiadis K Tsilimbaris
Ophthalmology
Retina
Vitreous
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
84,341
46,169
0.547
* Total Citation Counts Rankings
Ranking Based On Selection: 3
Greece
Aristidis Tsatsakis
Medical Toxicology
Food Toxicology
Forensic Toxicology
Toxicology
Clinical Biomarkers
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
65,540
49,539
0.756
* Total Citation Counts Rankings
Ranking Based On Selection: 4
Greece
Costas Stoumpos
Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
52,020
34,736
0.668
* Total Citation Counts Rankings
Ranking Based On Selection: 5
Greece
Christos Lionis
General Practice
Family Medicine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45,538
20,716
0.455
* Total Citation Counts Rankings
Ranking Based On Selection: 6
Greece
Nikos Komodakis
deep learning
computer vision
machine learning
medical image analysis
artificial intelligence
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
34,870
24,626
0.706
* Total Citation Counts Rankings
Ranking Based On Selection: 7
Greece
Nikos Mihalopoulos
Atmospheric chemistry and physics
air quality
aerosols
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
31,115
12,241
0.393
* Total Citation Counts Rankings
Ranking Based On Selection: 8
Greece
Markos Papageorgiou
Automatic Control
Optimisation
Transportation
Water Systems
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
30,799
10,233
0.332
* Total Citation Counts Rankings
Ranking Based On Selection: 9
Greece
Eleftherios N Economou
Theoretical Physics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,676
6,079
0.212
* Total Citation Counts Rankings
Ranking Based On Selection: 10
Greece
Vassilis Charmandaris
Astrophysics
Galaxy evolution
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,369
6,650
0.262
* Total Citation Counts Rankings
Ranking Based On Selection: 11
Greece
Constantin Zopounidis
Operations research
decision analysis
finance
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,569
7,589
0.322
* Total Citation Counts Rankings
Ranking Based On Selection: 12
Greece
Euripides G Stephanou
Environmental Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,924
6,464
0.309
* Total Citation Counts Rankings
Ranking Based On Selection: 13
Greece
Maria Kanakidou
Earth Science
Environmental Chemistry
Climate Change
Air Pollution
Biogeochemical cycles
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,320
6,864
0.338
* Total Citation Counts Rankings
Ranking Based On Selection: 14
Greece
Nicolas Kalogerakis
bioremediation
phytoremediation
environmental engineering
environmental biotechnology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,141
6,900
0.343
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Greece
Elias Kiritsis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,177
3,912
0.215
* Total Citation Counts Rankings
Ranking Based On Selection: 16
Greece
Vasiliki Pavlidou
High-energy Astrophysics
Cosmology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,935
4,215
0.235
* Total Citation Counts Rankings
Ranking Based On Selection: 17
Greece
Konstantinos Makris
Nonlinear Optics
Nanophotonics
Lasers
Nonhermitian Physics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,515
8,081
0.461
* Total Citation Counts Rankings
Ranking Based On Selection: 18
Greece
Ioannis Koutroubakis
Inflammatory bowel disease
colon ischemia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,377
8,065
0.464
* Total Citation Counts Rankings
Ranking Based On Selection: 19
Greece
Minos Garofalakis
Big data analytics
Data streams
Data mining and machine learning
Data Management
Database Systems
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,978
2,501
0.147
* Total Citation Counts Rankings
Ranking Based On Selection: 20
Greece
Elias Castanas
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,320
5,817
0.356
* Total Citation Counts Rankings
Ranking Based On Selection: 21
Greece
Ioannis G Pallikaris
ophthalmology
refractive surgery
presbyopia
visual optics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,639
2,793
0.191
* Total Citation Counts Rankings
Ranking Based On Selection: 22
Greece
Maria Kafesaki
metamaterials
photonic and phononic crystals
plasmonics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,571
4,556
0.313
* Total Citation Counts Rankings
Ranking Based On Selection: 23
Greece
A Zezas
Astrophysics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,471
4,597
0.318
* Total Citation Counts Rankings
Ranking Based On Selection: 24
Greece
Ioannis Tsamardinos
Machine Learning
Data Science
Bioinformatics
Causal Discovery
Artificial Intelligence
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,093
6,205
0.440
* Total Citation Counts Rankings
Ranking Based On Selection: 25
Greece
Panagiotis Simos
magnetoencephalography
dyslexia
age-related cognitive decline
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,814
4,206
0.304
* Total Citation Counts Rankings
Rankings
1,363
Greece
20
1
Ranking Based On Selection: 1
Panos Vardas
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
155,699
62,238
0.400
cardiovascular medicine/ Management
* Total Citation Counts Rankings
Rankings
4,354
Greece
26
2
Ranking Based On Selection: 2
Miltiadis K Tsilimbaris
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
84,341
46,169
0.547
* Total Citation Counts Rankings
Rankings
6,641
Greece
36
3
Ranking Based On Selection: 3
Aristidis Tsatsakis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
65,540
49,539
0.756
Medical Toxicology
Food Toxicology
Forensic Toxicology
Toxicology
Clinical Biomarkers
* Total Citation Counts Rankings
Rankings
9,663
Greece
49
4
Ranking Based On Selection: 4
Costas Stoumpos
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
52,020
34,736
0.668
* Total Citation Counts Rankings
Rankings
11,873
Greece
57
5
Ranking Based On Selection: 5
Christos Lionis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45,538
20,716
0.455
* Total Citation Counts Rankings
Rankings
18,200
Greece
81
6
Ranking Based On Selection: 6
Nikos Komodakis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
34,870
24,626
0.706
deep learning
computer vision
machine learning
medical image analysis
artificial intelligence
* Total Citation Counts Rankings
Rankings
21,700
Greece
92
7
Ranking Based On Selection: 7
Nikos Mihalopoulos
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
31,115
12,241
0.393
Atmospheric chemistry and physics
air quality
aerosols
* Total Citation Counts Rankings
Rankings
22,043
Greece
94
1
Ranking Based On Selection: 8
Markos Papageorgiou
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
30,799
10,233
0.332
* Total Citation Counts Rankings
Rankings
24,637
Greece
103
8
Ranking Based On Selection: 9
Eleftherios N Economou
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,676
6,079
0.212
* Total Citation Counts Rankings
Rankings
29,582
Greece
120
9
Ranking Based On Selection: 10
Vassilis Charmandaris
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,369
6,650
0.262
* Total Citation Counts Rankings
Rankings
32,954
Greece
141
2
Ranking Based On Selection: 11
Constantin Zopounidis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,569
7,589
0.322
* Total Citation Counts Rankings
Rankings
38,996
Greece
171
10
Ranking Based On Selection: 12
Euripides G Stephanou
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,924
6,464
0.309
* Total Citation Counts Rankings
Rankings
40,587
Greece
180
11
Ranking Based On Selection: 13
Maria Kanakidou
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,320
6,864
0.338
Earth Science
Environmental Chemistry
Climate Change
Air Pollution
Biogeochemical cycles
* Total Citation Counts Rankings
Rankings
41,093
Greece
181
3
Ranking Based On Selection: 14
Nicolas Kalogerakis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,141
6,900
0.343
bioremediation
phytoremediation
environmental engineering
environmental biotechnology
* Total Citation Counts Rankings
Rankings
47,291
Greece
212
12
Ranking Based On Selection: 15
Elias Kiritsis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,177
3,912
0.215
* Total Citation Counts Rankings
Rankings
48,171
Greece
216
13
Ranking Based On Selection: 16
Vasiliki Pavlidou
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,935
4,215
0.235
* Total Citation Counts Rankings
Rankings
49,752
Greece
227
14
Ranking Based On Selection: 17
Konstantinos Makris
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,515
8,081
0.461
Nonlinear Optics
Nanophotonics
Lasers
Nonhermitian Physics
* Total Citation Counts Rankings
Rankings
50,258
Greece
231
15
Ranking Based On Selection: 18
Ioannis Koutroubakis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,377
8,065
0.464
Inflammatory bowel disease
colon ischemia
* Total Citation Counts Rankings
Rankings
51,783
Greece
241
4
Ranking Based On Selection: 19
Minos Garofalakis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,978
2,501
0.147
Big data analytics
Data streams
Data mining and machine learning
Data Management
Database Systems
* Total Citation Counts Rankings
Rankings
54,698
Greece
262
16
Ranking Based On Selection: 20
Elias Castanas
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,320
5,817
0.356
* Total Citation Counts Rankings
Rankings
63,082
Greece
300
17
Ranking Based On Selection: 21
Ioannis G Pallikaris
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,639
2,793
0.191
ophthalmology
refractive surgery
presbyopia
visual optics
* Total Citation Counts Rankings
Rankings
63,437
Greece
303
18
Ranking Based On Selection: 22
Maria Kafesaki
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,571
4,556
0.313
* Total Citation Counts Rankings
Rankings
64,024
Greece
308
19
Ranking Based On Selection: 23
A Zezas
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,471
4,597
0.318
* Total Citation Counts Rankings
Rankings
66,364
Greece
321
20
Ranking Based On Selection: 24
Ioannis Tsamardinos
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,093
6,205
0.440
Machine Learning
Data Science
Bioinformatics
Causal Discovery
Artificial Intelligence
* Total Citation Counts Rankings
Rankings
68,052
Greece
331
21
Ranking Based On Selection: 25
Panagiotis Simos
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,814
4,206
0.304
magnetoencephalography
dyslexia
age-related cognitive decline