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Citation Rankings
Highly Cited Researchers

Highly Cited Researchers 1.797 Scientists Citation Rankings - 2026

See how widely and consistently research is cited with real-time citation rankings.
Covering 2.6 million scientists, this list evaluates both total and last 5 years’ citation counts to measure scientific influence and highlight Highly Cited Researchers.
Built on transparency, it also addresses unethical practices and encourages reporting of violations. Compare results across 13 fields and 221 disciplines.

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Total 1.797 scientists , Updates every 3 days
* Total Citation Counts Rankings

Rankings

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1,527
World Rank
United States
649
Country Rank
IBM Corporation Logo
1
University
Ranking Based On Selection:
1
Soumitra Sarkar
IBM Corporation New York, United States
Engineering & Technology / Computer Science
Software Engineering | Cloud Computing | Text Analytics | File systems | Storag

Citation Metrics

  • Total
    161,217
  • Last 5 Years
    69,118
  • Last 5 Years / Total
    0.429
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* Total Citation Counts Rankings

Rankings

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2,711
World Rank
United States
1,238
Country Rank
IBM Corporation Logo
2
University
Ranking Based On Selection:
2
Charles H Bennett
IBM Corporation New York, United States
Natural Sciences / Physics
physics of informatio

Citation Metrics

  • Total
    121,420
  • Last 5 Years
    35,464
  • Last 5 Years / Total
    0.292
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* Total Citation Counts Rankings

Rankings

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4,089
World Rank
United States
1,879
Country Rank
IBM Corporation Logo
3
University
Ranking Based On Selection:
3
Charu Aggarwal
IBM Corporation New York, United States
Engineering & Technology / Computer Science
Linear Algebra and Optimization | Data Mining | Probability and Statistics | Outlier Analysis | A

Citation Metrics

  • Total
    97,306
  • Last 5 Years
    42,590
  • Last 5 Years / Total
    0.438
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* Total Citation Counts Rankings

Rankings

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6,974
World Rank
United States
3,206
Country Rank
IBM Corporation Logo
4
University
Ranking Based On Selection:
4
Jerry Tersoff
IBM Corporation New York, United States
Natural Sciences / Physics
materials physics | nanotechnolog

Citation Metrics

  • Total
    70,783
  • Last 5 Years
    11,390
  • Last 5 Years / Total
    0.161
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* Total Citation Counts Rankings

Rankings

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9,706
World Rank
United States
4,477
Country Rank
IBM Corporation Logo
5
University
Ranking Based On Selection:
5
Jay M Gambetta
IBM Corporation New York, United States
Natural Sciences / Physics
quantum information | quantum computing | superconducting quantum circuits | quantum control | quantum simulatio

Citation Metrics

  • Total
    57,457
  • Last 5 Years
    39,560
  • Last 5 Years / Total
    0.689
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* Total Citation Counts Rankings

Rankings

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9,940
World Rank
United States
4,587
Country Rank
IBM Corporation Logo
6
University
Ranking Based On Selection:
6
James L Hedrick
IBM Corporation New York, United States
Others
polyme

Citation Metrics

  • Total
    56,609
  • Last 5 Years
    16,840
  • Last 5 Years / Total
    0.297
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* Total Citation Counts Rankings

Rankings

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10,236
World Rank
United States
4,725
Country Rank
IBM Corporation Logo
7
University
Ranking Based On Selection:
7
Salim Roukos, Salim Roucos
IBM Corporation New York, United States
Engineering & Technology / Computer Science
natural language processing | machine learning | speech processing | digital signal processin

Citation Metrics

  • Total
    55,486
  • Last 5 Years
    28,919
  • Last 5 Years / Total
    0.521
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* Total Citation Counts Rankings

Rankings

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10,484
World Rank
United States
4,847
Country Rank
IBM Corporation Logo
8
University
Ranking Based On Selection:
8
Declan Millar
IBM Corporation New York, United States
Natural Sciences / Physics
Quantum Computing Applications and Algorithms | Artificial intelligence | Particle physics phenomenolog

Citation Metrics

  • Total
    54,627
  • Last 5 Years
    44,197
  • Last 5 Years / Total
    0.809
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* Total Citation Counts Rankings

Rankings

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15,626
World Rank
United States
7,146
Country Rank
IBM Corporation Logo
9
University
Ranking Based On Selection:
9
Ronald Fagin
IBM Corporation New York, United States
Engineering & Technology / Computer Science
applications of logic to computer science | database theory | finite model theory | rank and scor

Citation Metrics

  • Total
    42,707
  • Last 5 Years
    6,211
  • Last 5 Years / Total
    0.145
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* Total Citation Counts Rankings

Rankings

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18,232
World Rank
United States
8,277
Country Rank
IBM Corporation Logo
10
University
Ranking Based On Selection:
10
Sharath Pankanti
IBM Corporation New York, United States
Engineering & Technology / Computer Science
computer vision | driver assistance | public safety | surveillance | securit

Citation Metrics

  • Total
    38,740
  • Last 5 Years
    10,038
  • Last 5 Years / Total
    0.259
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* Total Citation Counts Rankings

Rankings

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21,827
World Rank
United States
9,808
Country Rank
IBM Corporation Logo
11
University
Ranking Based On Selection:
11
John R Smith
IBM Corporation New York, United States
Engineering & Technology / Computer Science
Artificial Intelligence | Multimedia | Computer Vision | Machine Learning | Information Retrieva

Citation Metrics

  • Total
    34,410
  • Last 5 Years
    6,013
  • Last 5 Years / Total
    0.175
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* Total Citation Counts Rankings

Rankings

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22,643
World Rank
United States
10,169
Country Rank
IBM Corporation Logo
12
University
Ranking Based On Selection:
12
Dharmendra Modha
IBM Corporation New York, United States
Others
Brain-inspired Computin

Citation Metrics

  • Total
    33,632
  • Last 5 Years
    14,941
  • Last 5 Years / Total
    0.444
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* Total Citation Counts Rankings

Rankings

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23,954
World Rank
United States
10,742
Country Rank
IBM Corporation Logo
13
University
Ranking Based On Selection:
13
Clifford A Pickover
IBM Corporation New York, United States
Natural Sciences / Mathematical Sciences
science | mathematics | creativity | innovation | A

Citation Metrics

  • Total
    32,450
  • Last 5 Years
    15,695
  • Last 5 Years / Total
    0.484
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* Total Citation Counts Rankings

Rankings

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24,262
World Rank
United States
10,872
Country Rank
IBM Corporation Logo
14
University
Ranking Based On Selection:
14
Wendy D Cornell
IBM Corporation New York, United States
Medical and Health Sciences / Pharmacy & Pharmaceutical Sciences
Drug discovery | text mining | modeling | simulation | competitive intelligenc

Citation Metrics

  • Total
    32,173
  • Last 5 Years
    7,981
  • Last 5 Years / Total
    0.248
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* Total Citation Counts Rankings

Rankings

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24,679
World Rank
United States
11,075
Country Rank
IBM Corporation Logo
15
University
Ranking Based On Selection:
15
Roger Traub
IBM Corporation New York, United States
Medical and Health Sciences / Neuroscience
Neuroscienc

Citation Metrics

  • Total
    31,812
  • Last 5 Years
    5,466
  • Last 5 Years / Total
    0.172
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* Total Citation Counts Rankings

Rankings

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24,775
World Rank
United States
11,118
Country Rank
IBM Corporation Logo
16
University
Ranking Based On Selection:
16
Brian Kingsbury
IBM Corporation New York, United States
Engineering & Technology / Computer Science
Automatic Speech Recognition | Spoken Term Detection | Deep Learnin

Citation Metrics

  • Total
    31,721
  • Last 5 Years
    14,991
  • Last 5 Years / Total
    0.473
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* Total Citation Counts Rankings

Rankings

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24,853
World Rank
United States
11,151
Country Rank
IBM Corporation Logo
17
University
Ranking Based On Selection:
17
Jeff Kephart
IBM Corporation New York, United States
Engineering & Technology / Computer Science
autonomic computing | embodied artificial intelligence | energy management | nonlinear dynamics | machine learnin

Citation Metrics

  • Total
    31,662
  • Last 5 Years
    5,416
  • Last 5 Years / Total
    0.171
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* Total Citation Counts Rankings

Rankings

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25,676
World Rank
United States
11,484
Country Rank
IBM Corporation Logo
18
University
Ranking Based On Selection:
18
Jerry M Chow
IBM Corporation New York, United States
Natural Sciences / Physics
Quantum computing | Superconducting quantum circuits | quantum algorithm

Citation Metrics

  • Total
    30,970
  • Last 5 Years
    21,135
  • Last 5 Years / Total
    0.682
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* Total Citation Counts Rankings

Rankings

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25,994
World Rank
United States
11,611
Country Rank
IBM Corporation Logo
19
University
Ranking Based On Selection:
19
Pin-Yu Chen
IBM Corporation New York, United States
Engineering & Technology / Computer Science
AI Safety | Generative AI | Trustworthy Machine Learning | Adversarial Machine Learnin

Citation Metrics

  • Total
    30,741
  • Last 5 Years
    28,465
  • Last 5 Years / Total
    0.926
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* Total Citation Counts Rankings

Rankings

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26,598
World Rank
United States
11,888
Country Rank
IBM Corporation Logo
20
University
Ranking Based On Selection:
20
Rudolf Tromp
IBM Corporation New York, United States
Natural Sciences / Physics
Physics | Materials Science | Surface Science | Analytical Scienc

Citation Metrics

  • Total
    30,274
  • Last 5 Years
    3,210
  • Last 5 Years / Total
    0.106
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* Total Citation Counts Rankings

Rankings

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27,092
World Rank
United States
12,101
Country Rank
IBM Corporation Logo
21
University
Ranking Based On Selection:
21
Alfred Grill
IBM Corporation New York, United States
Engineering & Technology / Metallurgical & Materials Engineering
Materials Scienc

Citation Metrics

  • Total
    29,929
  • Last 5 Years
    6,098
  • Last 5 Years / Total
    0.204
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* Total Citation Counts Rankings

Rankings

flag
27,476
World Rank
United States
12,263
Country Rank
IBM Corporation Logo
22
University
Ranking Based On Selection:
22
Donald S Bethune
IBM Corporation New York, United States
Natural Sciences / Physics
optics | fullerenes | nanotubes | lasers | cryptograph

Citation Metrics

  • Total
    29,635
  • Last 5 Years
    3,614
  • Last 5 Years / Total
    0.122
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* Total Citation Counts Rankings

Rankings

flag
27,664
World Rank
United States
12,340
Country Rank
IBM Corporation Logo
23
University
Ranking Based On Selection:
23
Yousaf Shah
IBM Corporation New York, United States
Engineering & Technology / Computer Science
Data Engineering for LLMs | Machine Learning | AI | Distributed&Parallel Computing | Time Series Analysi

Citation Metrics

  • Total
    29,507
  • Last 5 Years
    9,675
  • Last 5 Years / Total
    0.328
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* Total Citation Counts Rankings

Rankings

flag
28,064
World Rank
United States
12,512
Country Rank
IBM Corporation Logo
24
University
Ranking Based On Selection:
24
Myron Flickner
IBM Corporation New York, United States
Others

Citation Metrics

  • Total
    29,215
  • Last 5 Years
    7,388
  • Last 5 Years / Total
    0.253
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* Total Citation Counts Rankings

Rankings

flag
28,149
World Rank
United States
12,547
Country Rank
IBM Corporation Logo
25
University
Ranking Based On Selection:
25
Lisa Brown
IBM Corporation New York, United States
Engineering & Technology / Computer Science
Computer Visio

Citation Metrics

  • Total
    29,160
  • Last 5 Years
    7,539
  • Last 5 Years / Total
    0.259
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