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
Applied linguistics
language learning and teaching
language education policy and practice
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
207,663
42,817
0.206
* Total Citation Counts Rankings
Ranking Based On Selection :2
Particle and Astroparticle Physics. Σωματιδιακή και Αστροσωματιδιακή Φυσική
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
142,790
83,842
0.587
* Total Citation Counts Rankings
Ranking Based On Selection :3
social science
methodology
philosophy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
93,976
27,595
0.294
* Total Citation Counts Rankings
Ranking Based On Selection :4
Astronomy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
82,328
23,129
0.281
* Total Citation Counts Rankings
Ranking Based On Selection :5
Instructional Design
Educational Psychology
Educational Technology
Computer Supported Collaborative Learning
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
63,822
30,117
0.472
* Total Citation Counts Rankings
Ranking Based On Selection :6
environmental management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
55,905
18,544
0.332
* Total Citation Counts Rankings
Ranking Based On Selection :7
organisation studies and management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
53,909
25,847
0.479
* Total Citation Counts Rankings
Ranking Based On Selection :8
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
33,970
10,306
0.303
* Total Citation Counts Rankings
Ranking Based On Selection :9
Management
Business
Innovation
Human Resource Management
Health Service Leadership and Management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
33,952
11,567
0.341
* Total Citation Counts Rankings
Ranking Based On Selection :10
affect/emotion
curriculum and pedagogy
decolonization
higher education
education policy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
32,706
18,417
0.563
* Total Citation Counts Rankings
Ranking Based On Selection :11
Educational Technology
Learning Sciences
STEM learning
human computer interaction
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,942
9,458
0.316
* Total Citation Counts Rankings
Ranking Based On Selection :12
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,809
10,793
0.375
* Total Citation Counts Rankings
Ranking Based On Selection :13
Extragalactic astronomy
infrared astronomy
radio astronomy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,545
8,325
0.302
* Total Citation Counts Rankings
Ranking Based On Selection :14
Environmental Studies
International Studies
Development
Citizenship
Political Participation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,440
7,152
0.261
* Total Citation Counts Rankings
Ranking Based On Selection :15
qualitative methods
medical sociology
focus groups
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
22,843
8,405
0.368
* Total Citation Counts Rankings
Ranking Based On Selection :16
Atmospheric sciences
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,687
11,909
0.549
* Total Citation Counts Rankings
Ranking Based On Selection :17
Human Computer Interaction
Music Computing
Pervasive Computing
Embodied Interaction
Foundations of Computation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,970
5,366
0.256
* Total Citation Counts Rankings
Ranking Based On Selection :18
Semantic Web
Ontology Engineering
Knowledge Systems
Data Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,658
4,350
0.211
* Total Citation Counts Rankings
Ranking Based On Selection :19
Learning
expertise development
curriculum
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,129
6,464
0.321
* Total Citation Counts Rankings
Ranking Based On Selection :20
Software engineering
requirements engineering
security and privacy
digital forensics
adaptive
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,755
4,904
0.248
* Total Citation Counts Rankings
Ranking Based On Selection :21
Databases
Datamining
Data Structures
WWW
Scientometrics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,747
4,789
0.255
* Total Citation Counts Rankings
Ranking Based On Selection :22
mobile learning
mobile language learning
MALL
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,798
8,208
0.461
* Total Citation Counts Rankings
Ranking Based On Selection :23
mobile learning
mobile assisted language learning
educational technology
distance learning
technology enhanced learning
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,787
8,198
0.461
* Total Citation Counts Rankings
Ranking Based On Selection :24
Computer Vision
Machine Learning
Pattern Recognition
Computer Graphics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,618
11,812
0.670
* Total Citation Counts Rankings
Ranking Based On Selection :25
Statistical methodology
epidemiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,895
5,252
0.311
* Total Citation Counts Rankings
Rankings
735
56
1
Ranking Based On Selection: 1
Jim Coleman
Open University UK
Milton Keynes, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
207,663
42,817
0.206
Applied linguistics
language learning and teaching
language education policy and practice
* Total Citation Counts Rankings
Rankings
1,563
22
1
Ranking Based On Selection: 2
Antonis Leisos
Hellenic Open University
Patras, Greece
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
142,790
83,842
0.587
Particle and Astroparticle Physics. Σωματιδιακή και Αστροσωματιδιακή Φυσική
* Total Citation Counts Rankings
Rankings
3,532
291
2
Ranking Based On Selection: 3
Martyn Hammersley
Open University UK
Milton Keynes, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
93,976
27,595
0.294
social science
methodology
philosophy
* Total Citation Counts Rankings
Rankings
4,399
348
3
Ranking Based On Selection: 4
Glenn White
Open University UK
Milton Keynes, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
82,328
23,129
0.281
* Total Citation Counts Rankings
Rankings
6,762
154
1
Ranking Based On Selection: 5
Paul A Kirschner
Open University
Milton Keynes, Netherlands
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
63,822
30,117
0.472
Instructional Design
Educational Psychology
Educational Technology
Computer Supported Collaborative Learning
* Total Citation Counts Rankings
Rankings
8,373
5
1
Ranking Based On Selection: 6
Georgios Defteaios
Open University of Cyprus
Latsia, Cyprus
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
55,905
18,544
0.332
environmental management
* Total Citation Counts Rankings
Rankings
8,892
779
4
Ranking Based On Selection: 7
Emma Bell
Open University UK
Milton Keynes, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
53,909
25,847
0.479
* Total Citation Counts Rankings
Rankings
18,439
1,634
5
Ranking Based On Selection: 8
Helen Sharp
Open University UK
Milton Keynes, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
33,970
10,306
0.303
* Total Citation Counts Rankings
Rankings
18,455
1,636
6
Ranking Based On Selection: 9
John Storey
Open University UK
Milton Keynes, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
33,952
11,567
0.341
Management
Business
Innovation
Human Resource Management
Health Service Leadership and Management
* Total Citation Counts Rankings
Rankings
19,552
12
2
Ranking Based On Selection: 10
Michalinos Zembylas
Open University of Cyprus
Latsia, Cyprus
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
32,706
18,417
0.563
affect/emotion
curriculum and pedagogy
decolonization
higher education
education policy
* Total Citation Counts Rankings
Rankings
22,464
1,993
7
Ranking Based On Selection: 11
Mike Sharples
Open University UK
Milton Keynes, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,942
9,458
0.316
Educational Technology
Learning Sciences
STEM learning
human computer interaction
* Total Citation Counts Rankings
Rankings
23,883
2,099
8
Ranking Based On Selection: 12
Nigel Cross
Open University UK
Milton Keynes, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,809
10,793
0.375
* Total Citation Counts Rankings
Rankings
25,501
2,222
9
Ranking Based On Selection: 13
Stephen Serjeant
Open University UK
Milton Keynes, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,545
8,325
0.302
Extragalactic astronomy
infrared astronomy
radio astronomy
* Total Citation Counts Rankings
Rankings
25,642
2,238
10
Ranking Based On Selection: 14
Mark J Smith
Open University UK
Milton Keynes, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,440
7,152
0.261
Environmental Studies
International Studies
Development
Citizenship
Political Participation
* Total Citation Counts Rankings
Rankings
33,610
2,954
11
Ranking Based On Selection: 15
Rosaline Barbour
Open University UK
Milton Keynes, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
22,843
8,405
0.368
qualitative methods
medical sociology
focus groups
* Total Citation Counts Rankings
Rankings
36,175
301
1
Ranking Based On Selection: 16
Sandeep Gupta
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,687
11,909
0.549
* Total Citation Counts Rankings
Rankings
37,961
3,312
12
Ranking Based On Selection: 17
Simon Holland
Open University UK
Milton Keynes, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,970
5,366
0.256
Human Computer Interaction
Music Computing
Pervasive Computing
Embodied Interaction
Foundations of Computation
* Total Citation Counts Rankings
Rankings
38,764
3,388
13
Ranking Based On Selection: 18
Enrico Motta
Open University UK
Milton Keynes, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,658
4,350
0.211
Semantic Web
Ontology Engineering
Knowledge Systems
Data Science
* Total Citation Counts Rankings
Rankings
40,218
1,075
2
Ranking Based On Selection: 19
Hpa Boshuizen
Open University
Milton Keynes, Netherlands
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,129
6,464
0.321
Learning
expertise development
curriculum
* Total Citation Counts Rankings
Rankings
41,260
3,605
14
Ranking Based On Selection: 20
Bashar Nuseibeh
Open University UK
Milton Keynes, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,755
4,904
0.248
Software engineering
requirements engineering
security and privacy
digital forensics
adaptive
* Total Citation Counts Rankings
Rankings
44,227
21
3
Ranking Based On Selection: 21
Yannis Manolopoulos
Open University of Cyprus
Latsia, Cyprus
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,747
4,789
0.255
Databases
Datamining
Data Structures
WWW
Scientometrics
* Total Citation Counts Rankings
Rankings
47,579
4,135
15
Ranking Based On Selection: 22
Agnes Kukulska Hulme
Open University UK
Milton Keynes, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,798
8,208
0.461
mobile learning
mobile language learning
MALL
* Total Citation Counts Rankings
Rankings
47,614
4,137
16
Ranking Based On Selection: 23
Agnes Kukulska Hulme
Open University UK
Milton Keynes, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,787
8,198
0.461
mobile learning
mobile assisted language learning
educational technology
distance learning
technology enhanced learning
* Total Citation Counts Rankings
Rankings
48,233
330
1
Ranking Based On Selection: 24
Tal Hassner
Open University of Israel
Ra'anana, Israel
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,618
11,812
0.670
Computer Vision
Machine Learning
Pattern Recognition
Computer Graphics
* Total Citation Counts Rankings
Rankings
50,962
4,418
17
Ranking Based On Selection: 25
Paddy Farrington
Open University UK
Milton Keynes, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,895
5,252
0.311