Citation Rankings
Highly Cited Researchers
Highly Cited Researchers Citation Rankings 2025
The Citation Rankings (Highly Cited Researchers) 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
Genetics of common
chronic disease. Disease risk assessment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
202,528
114,236
0.564
* Total Citation Counts Rankings
Ranking Based On Selection :2
Human genetics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
160,190
71,572
0.447
* Total Citation Counts Rankings
Ranking Based On Selection :3
Statistics
biostatistics
survival analysis
clinical prediction models
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
141,915
68,925
0.486
* Total Citation Counts Rankings
Ranking Based On Selection :4
computational science
rate theory
electronic structure
catalysis
nanoclusters
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
80,272
43,918
0.547
* Total Citation Counts Rankings
Ranking Based On Selection :5
The Cosmic Microwave Background. Early universe models
large scale structure
and general cosmology.
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
74,018
49,537
0.669
* Total Citation Counts Rankings
Ranking Based On Selection :6
Astro particle physics
high-energy gamma rays
Cosmic rays
gamma-ray bursts
interstellar medium
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
66,627
26,765
0.402
* Total Citation Counts Rankings
Ranking Based On Selection :7
Remote Sensing
Image Analysis
Pattern Recognition
Signal Processing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
51,295
26,338
0.513
* Total Citation Counts Rankings
Ranking Based On Selection :8
Cancer genetics
DNA repair
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
37,114
16,358
0.441
* Total Citation Counts Rankings
Ranking Based On Selection :9
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
35,199
15,260
0.434
* Total Citation Counts Rankings
Ranking Based On Selection :10
Cyclodextrins
solubilization
stabilization
prodrugs
soft drugs
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
34,015
13,028
0.383
* Total Citation Counts Rankings
Ranking Based On Selection :11
fisheries
otolith
shark
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
32,139
9,334
0.290
* Total Citation Counts Rankings
Ranking Based On Selection :12
Gamma-Ray Bursts
Cosmology
Galaxy Evolution
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
24,753
9,928
0.401
* Total Citation Counts Rankings
Ranking Based On Selection :13
Methods of data analysis for experimental particle physics
human genetics
mathematical physics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,157
2,687
0.127
* Total Citation Counts Rankings
Ranking Based On Selection :14
Bioinformatics
Algorithms and Data Structures
Probabilistic Combinatorics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,990
18,589
0.886
* Total Citation Counts Rankings
Ranking Based On Selection :15
Hematology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,255
11,468
0.596
* Total Citation Counts Rankings
Ranking Based On Selection :16
Nutrition
Infancy
Childhood
Vulnerable groups
Diabetes mellitus
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,841
6,086
0.341
* Total Citation Counts Rankings
Ranking Based On Selection :17
CO2 storage
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,623
8,700
0.494
* Total Citation Counts Rankings
Ranking Based On Selection :18
volcanology
petrology
geochemistry
climate change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,755
6,609
0.394
* Total Citation Counts Rankings
Ranking Based On Selection :19
stable isotopes
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,996
4,375
0.274
* Total Citation Counts Rankings
Ranking Based On Selection :20
innate immunity
infection
inflammation
gene regulation
epithelia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,613
3,789
0.243
* Total Citation Counts Rankings
Ranking Based On Selection :21
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,551
7,711
0.496
* Total Citation Counts Rankings
Ranking Based On Selection :22
Plant population ecology
moss-vascular plant interaction
plant-animal interaction
biodiversity in the Arctic
effects of climate change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,321
6,242
0.469
* Total Citation Counts Rankings
Ranking Based On Selection :23
glaciology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,747
4,021
0.315
* Total Citation Counts Rankings
Ranking Based On Selection :24
Quantum physics: theory
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,740
5,944
0.467
* Total Citation Counts Rankings
Ranking Based On Selection :25
epidemiology
stress
cancer
CVD
birth outcomes
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,684
7,638
0.602
* Total Citation Counts Rankings
Rankings
782
1
1
Ranking Based On Selection: 1
Vilmundur Gudnason
University of Iceland
Reykjavík, Iceland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
202,528
114,236
0.564
Genetics of common
chronic disease. Disease risk assessment
* Total Citation Counts Rankings
Rankings
1,254
2
2
Ranking Based On Selection: 2
Unnur Thorsteinsdottir
University of Iceland
Reykjavík, Iceland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
160,190
71,572
0.447
* Total Citation Counts Rankings
Rankings
1,585
3
3
Ranking Based On Selection: 3
Thor Aspelund
University of Iceland
Reykjavík, Iceland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
141,915
68,925
0.486
Statistics
biostatistics
survival analysis
clinical prediction models
* Total Citation Counts Rankings
Rankings
4,619
6
4
Ranking Based On Selection: 4
Hannes Jónsson
University of Iceland
Reykjavík, Iceland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
80,272
43,918
0.547
computational science
rate theory
electronic structure
catalysis
nanoclusters
* Total Citation Counts Rankings
Rankings
5,338
7
5
Ranking Based On Selection: 5
Jon E Gudmundsson
University of Iceland
Reykjavík, Iceland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
74,018
49,537
0.669
The Cosmic Microwave Background. Early universe models
large scale structure
and general cosmology.
* Total Citation Counts Rankings
Rankings
6,289
8
6
Ranking Based On Selection: 6
Guðlaugur Jóhannesson
University of Iceland
Reykjavík, Iceland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
66,627
26,765
0.402
Astro particle physics
high-energy gamma rays
Cosmic rays
gamma-ray bursts
interstellar medium
* Total Citation Counts Rankings
Rankings
9,602
11
7
Ranking Based On Selection: 7
Jón Atli Benediktsson
University of Iceland
Reykjavík, Iceland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
51,295
26,338
0.513
Remote Sensing
Image Analysis
Pattern Recognition
Signal Processing
* Total Citation Counts Rankings
Rankings
16,094
15
8
Ranking Based On Selection: 8
Jorunn E Eyfjord
University of Iceland
Reykjavík, Iceland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
37,114
16,358
0.441
Cancer genetics
DNA repair
* Total Citation Counts Rankings
Rankings
17,466
17
9
Ranking Based On Selection: 9
Agnar Helgason
University of Iceland
Reykjavík, Iceland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
35,199
15,260
0.434
* Total Citation Counts Rankings
Rankings
18,403
19
10
Ranking Based On Selection: 10
Thorsteinn Loftsson
University of Iceland
Reykjavík, Iceland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
34,015
13,028
0.383
* Total Citation Counts Rankings
Rankings
20,121
20
11
Ranking Based On Selection: 11
Steven Campana
University of Iceland
Reykjavík, Iceland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
32,139
9,334
0.290
* Total Citation Counts Rankings
Rankings
29,956
22
12
Ranking Based On Selection: 12
Pall Jakobsson
University of Iceland
Reykjavík, Iceland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
24,753
9,928
0.401
Gamma-Ray Bursts
Cosmology
Galaxy Evolution
* Total Citation Counts Rankings
Rankings
37,475
27
13
Ranking Based On Selection: 13
Nikolay Gagunashvili
University of Iceland
Reykjavík, Iceland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,157
2,687
0.127
Methods of data analysis for experimental particle physics
human genetics
mathematical physics
* Total Citation Counts Rankings
Rankings
37,915
28
14
Ranking Based On Selection: 14
Páll Melsted
University of Iceland
Reykjavík, Iceland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,990
18,589
0.886
Bioinformatics
Algorithms and Data Structures
Probabilistic Combinatorics
* Total Citation Counts Rankings
Rankings
42,680
32
15
Ranking Based On Selection: 15
Sigurður Yngvi Kristinsson
University of Iceland
Reykjavík, Iceland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,255
11,468
0.596
* Total Citation Counts Rankings
Rankings
47,422
34
16
Ranking Based On Selection: 16
İnga Thorsdottir
University of Iceland
Reykjavík, Iceland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,841
6,086
0.341
Nutrition
Infancy
Childhood
Vulnerable groups
Diabetes mellitus
* Total Citation Counts Rankings
Rankings
48,215
35
17
Ranking Based On Selection: 17
Sigurdur R Gislason
University of Iceland
Reykjavík, Iceland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,623
8,700
0.494
* Total Citation Counts Rankings
Rankings
51,518
36
18
Ranking Based On Selection: 18
Thor Thordarson
University of Iceland
Reykjavík, Iceland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,755
6,609
0.394
volcanology
petrology
geochemistry
climate change
* Total Citation Counts Rankings
Rankings
54,910
37
19
Ranking Based On Selection: 19
Arny Sveinbjornsdottir
University of Iceland
Reykjavík, Iceland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,996
4,375
0.274
* Total Citation Counts Rankings
Rankings
56,668
38
20
Ranking Based On Selection: 20
Gudmundur Hrafn Gudmundsson
University of Iceland
Reykjavík, Iceland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,613
3,789
0.243
innate immunity
infection
inflammation
gene regulation
epithelia
* Total Citation Counts Rankings
Rankings
56,955
39
21
Ranking Based On Selection: 21
Ogmundsdottir Mh
University of Iceland
Reykjavík, Iceland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,551
7,711
0.496
* Total Citation Counts Rankings
Rankings
69,760
41
22
Ranking Based On Selection: 22
Ingibjörg Svala Jónsdóttir
University of Iceland
Reykjavík, Iceland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,321
6,242
0.469
Plant population ecology
moss-vascular plant interaction
plant-animal interaction
biodiversity in the Arctic
effects of climate change
* Total Citation Counts Rankings
Rankings
73,769
42
23
Ranking Based On Selection: 23
Helgi Björnsson
University of Iceland
Reykjavík, Iceland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,747
4,021
0.315
* Total Citation Counts Rankings
Rankings
73,810
43
24
Ranking Based On Selection: 24
Ivan Shelykh
University of Iceland
Reykjavík, Iceland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,740
5,944
0.467
* Total Citation Counts Rankings
Rankings
74,217
44
25
Ranking Based On Selection: 25
Unnur Valdimarsdóttir
University of Iceland
Reykjavík, Iceland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,684
7,638
0.602
epidemiology
stress
cancer
CVD
birth outcomes