Citation Rankings
Highly Cited Researchers

Highly Cited Researchers 342 Scientists Citation Rankings - 2025

Discover the world’s highly cited researchers through the AD Scientific Index 2025 Citation Rankings.
These rankings evaluate scientists based on their total and recent citation counts, capturing the breadth and real-time currency of academic recognition. Citation data reveals how widely a scholar’s work is referenced, applied, and extended across diverse disciplines. The rankings are routinely updated to reflect ongoing citation growth, while eliminating distortions from excessive co-authorship and institutional inflation. Premium tools provide access to detailed citation dynamics, unethical citation behavior detection, and field-normalized benchmarking.

* Total Citation Counts Rankings
Ranking Based On Selection: 26
United States
Biswa Nath Datta
Numerical Linear Algebr
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,688
1,259
0.221
* Total Citation Counts Rankings
Ranking Based On Selection: 27
United States
Reed Scherer
Diatoms
Antarctica
West Antarctic Ice Sheet
taphonomy
PET
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,594
1,962
0.351
* Total Citation Counts Rankings
Ranking Based On Selection: 28
United States
David J Gunkel
philosophy of technology
information and communication technology
ethics
robot ethics
digital medi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,506
3,443
0.625
* Total Citation Counts Rankings
Ranking Based On Selection: 29
United States
James P Burton
Abusive Supervision
Aggression
Retentio
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,497
2,235
0.407
* Total Citation Counts Rankings
Ranking Based On Selection: 30
United States
Carol Thompson
In-situ characterization of materials processing and film properties using x-ray scattering methods
materials physic
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,439
1,138
0.209
* Total Citation Counts Rankings
Ranking Based On Selection: 31
United States
Lee Shumow
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,356
1,570
0.293
* Total Citation Counts Rankings
Ranking Based On Selection: 32
United States
Walker S Ashley
Meteorology
Climatology
Geography
Hazards
Disaster
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,231
2,878
0.550
* Total Citation Counts Rankings
Ranking Based On Selection: 33
United States
Qingkai Kong
Ordinary differential equation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,932
1,138
0.231
* Total Citation Counts Rankings
Ranking Based On Selection: 34
United States
Nick Karonis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,932
392
0.079

Smart Institutional Plan

Powerful Insights + Smart Membership = Institutional Success
Unlock 360° Real-Time Institutional Analysis to identify your institution’s strengths and areas for improvement.

* Total Citation Counts Rankings
Ranking Based On Selection: 35
United States
R Meganathan
Microbiology
Microbial physiology
Biochemistr
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,720
876
0.186
* Total Citation Counts Rankings
Ranking Based On Selection: 36
United States
Richard Greene
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,256
1,800
0.423
* Total Citation Counts Rankings
Ranking Based On Selection: 37
United States
Yanghee Kim
Child robot interaction
Pedagogical agents
Culturally responsive design
Multimodal analytics
Social robotic
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,993
1,655
0.414
* Total Citation Counts Rankings
Ranking Based On Selection: 38
United States
Laura D Pittman
developmental psychopathology
family processes
coparenting
parenting
risk and protective factor
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,983
1,794
0.450
* Total Citation Counts Rankings
Ranking Based On Selection: 39
United States
Mitchell Irwin
primatology
ecology
nutritional ecology
conservatio
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,931
1,723
0.438
* Total Citation Counts Rankings
Ranking Based On Selection: 40
United States
Mahesh Subramony
Service Management Research
Strategic Human Resource Managemen
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,902
2,370
0.607
* Total Citation Counts Rankings
Ranking Based On Selection: 41
United States
David Koop
visualization
provenance
scientitic data managemen
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,861
1,077
0.279
* Total Citation Counts Rankings
Ranking Based On Selection: 42
United States
Nicholas A Pohlman
Granular flo
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,743
3,098
0.828
* Total Citation Counts Rankings
Ranking Based On Selection: 43
United States
Thomas J Smith
Educational research methodology
statistics
large-scale data analysi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,736
2,325
0.622
* Total Citation Counts Rankings
Ranking Based On Selection: 44
United States
Douglas Klumpp
Organic synthesis
organic reaction mechanism
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,713
1,145
0.308
* Total Citation Counts Rankings
Ranking Based On Selection: 45
United States
Kathleen Mcfadden
operations safety
quality management
service operation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,709
1,531
0.413
* Total Citation Counts Rankings
Ranking Based On Selection: 46
United States
Richard King
conservation
herpetolog
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,707
1,017
0.274
* Total Citation Counts Rankings
Ranking Based On Selection: 47
United States
Michelle Lilly
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,568
1,977
0.554
* Total Citation Counts Rankings
Ranking Based On Selection: 48
United States
Barrie Bode
cancer biolog
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,424
577
0.169
* Total Citation Counts Rankings
Ranking Based On Selection: 49
United States
Balaji Rajagopalan
Innovations in Information Technology
its diffusion and impac
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,376
1,020
0.302
* Total Citation Counts Rankings
Ranking Based On Selection: 50
United States
Tariq Shamim
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,296
2,060
0.625
* Total Citation Counts Rankings
Rankings
192,334
United States
69,383
26
Ranking Based On Selection: 26
Biswa Nath Datta
       Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,688
1,259
0.221
* Total Citation Counts Rankings
Rankings
195,467
United States
70,360
27
Ranking Based On Selection: 27
Reed Scherer
       Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,594
1,962
0.351
Diatoms
Antarctica
West Antarctic Ice Sheet
taphonomy
PET
* Total Citation Counts Rankings
Rankings
198,558
United States
71,250
28
Ranking Based On Selection: 28
David J Gunkel
       Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,506
3,443
0.625
philosophy of technology
information and communication technology
ethics
robot ethics
digital medi
* Total Citation Counts Rankings
Rankings
198,878
United States
71,336
29
Ranking Based On Selection: 29
James P Burton
       Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,497
2,235
0.407
* Total Citation Counts Rankings
Rankings
200,980
United States
71,952
30
Ranking Based On Selection: 30
Carol Thompson
       Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,439
1,138
0.209
In-situ characterization of materials processing and film properties using x-ray scattering methods
materials physic
* Total Citation Counts Rankings
Rankings
203,977
United States
72,825
31
Ranking Based On Selection: 31
Lee Shumow
       Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,356
1,570
0.293
* Total Citation Counts Rankings
Rankings
208,651
United States
74,216
32
Ranking Based On Selection: 32
Walker S Ashley
       Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,231
2,878
0.550
Meteorology
Climatology
Geography
Hazards
Disaster
* Total Citation Counts Rankings
Rankings
220,900
United States
77,836
33
Ranking Based On Selection: 33
Qingkai Kong
       Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,932
1,138
0.231
* Total Citation Counts Rankings
Rankings
220,907
United States
77,839
34
Ranking Based On Selection: 34
Nick Karonis
       Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,932
392
0.079
* Total Citation Counts Rankings
Rankings
230,153
United States
80,589
35
Ranking Based On Selection: 35
R Meganathan
       Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,720
876
0.186

Smart Institutional Plan

Powerful Insights + Smart Membership = Institutional Success
Unlock 360° Real-Time Institutional Analysis to identify your institution’s strengths and areas for improvement.

* Total Citation Counts Rankings
Rankings
253,333
United States
87,347
36
Ranking Based On Selection: 36
Richard Greene
       Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,256
1,800
0.423
* Total Citation Counts Rankings
Rankings
268,245
United States
91,645
37
Ranking Based On Selection: 37
Yanghee Kim
       Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,993
1,655
0.414
Child robot interaction
Pedagogical agents
Culturally responsive design
Multimodal analytics
Social robotic
* Total Citation Counts Rankings
Rankings
268,886
United States
91,824
38
Ranking Based On Selection: 38
Laura D Pittman
       Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,983
1,794
0.450
developmental psychopathology
family processes
coparenting
parenting
risk and protective factor
* Total Citation Counts Rankings
Rankings
272,020
United States
92,750
39
Ranking Based On Selection: 39
Mitchell Irwin
       Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,931
1,723
0.438
primatology
ecology
nutritional ecology
conservatio
* Total Citation Counts Rankings
Rankings
273,742
United States
93,247
40
Ranking Based On Selection: 40
Mahesh Subramony
       Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,902
2,370
0.607
Service Management Research
Strategic Human Resource Managemen
* Total Citation Counts Rankings
Rankings
276,239
United States
93,942
41
Ranking Based On Selection: 41
David Koop
       Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,861
1,077
0.279
* Total Citation Counts Rankings
Rankings
283,755
United States
96,090
42
Ranking Based On Selection: 42
Nicholas A Pohlman
       Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,743
3,098
0.828
* Total Citation Counts Rankings
Rankings
284,243
United States
96,227
43
Ranking Based On Selection: 43
Thomas J Smith
       Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,736
2,325
0.622
Educational research methodology
statistics
large-scale data analysi
* Total Citation Counts Rankings
Rankings
285,814
United States
96,665
44
Ranking Based On Selection: 44
Douglas Klumpp
       Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,713
1,145
0.308
* Total Citation Counts Rankings
Rankings
286,075
United States
96,731
45
Ranking Based On Selection: 45
Kathleen Mcfadden
       Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,709
1,531
0.413
* Total Citation Counts Rankings
Rankings
286,242
United States
96,768
46
Ranking Based On Selection: 46
Richard King
       Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,707
1,017
0.274
* Total Citation Counts Rankings
Rankings
295,640
United States
99,466
47
Ranking Based On Selection: 47
Michelle Lilly
       Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,568
1,977
0.554
* Total Citation Counts Rankings
Rankings
306,185
United States
102,495
48
Ranking Based On Selection: 48
Barrie Bode
       Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,424
577
0.169
* Total Citation Counts Rankings
Rankings
309,883
United States
103,534
49
Ranking Based On Selection: 49
Balaji Rajagopalan
       Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,376
1,020
0.302
Innovations in Information Technology
its diffusion and impac
* Total Citation Counts Rankings
Rankings
316,239
United States
105,304
50
Ranking Based On Selection: 50
Tariq Shamim
       Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,296
2,060
0.625