Citation Rankings
Highly Cited Researchers
Japan Highly Cited Researchers Citation in Japan Rankings 2025
Citation Rankings (Highly Cited Researchers) and the list of the most cited and influential researchers cover a wide range of scientific fields, spanning 197 main and sub-disciplines, as well as the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings, offering a unique service. Additionally, the list without CERN, Statistical Data, etc., provided exclusively by “AD Scientific Index”, is part of our effort to balance the situation created by CERN and researchers with statistical data, who have an advantage over others, especially those in the social and humanities fields. There should be new regulations for multi-author and CERN papers. Citation lists also reveal many rule violations and unethical practices. See also for more specific citation analyses: 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 :101
oceanography
biogeochemistry
geochemistry
carbon cycle
climate change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,725
7,240
0.333
* Total Citation Counts Rankings
Ranking Based On Selection :102
Solid state chemistry and physics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,579
6,526
0.302
* Total Citation Counts Rankings
Ranking Based On Selection :103
Nanomaterials and electronics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,560
12,222
0.567
* Total Citation Counts Rankings
Ranking Based On Selection :104
Radar
GPR
Antenna
Remote Sensing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,537
9,707
0.451
* Total Citation Counts Rankings
Ranking Based On Selection :105
Speech Synthesis
Speech Recognition
Spoken Language Processing
Machine Learning
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,357
4,561
0.214
* Total Citation Counts Rankings
Ranking Based On Selection :106
computational social science
network science
complex systems
temporal networks
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,287
9,281
0.436
* Total Citation Counts Rankings
Ranking Based On Selection :107
energy conversion
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,214
4,538
0.214
* Total Citation Counts Rankings
Ranking Based On Selection :108
Earth and planetary science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,102
7,268
0.344
* Total Citation Counts Rankings
Ranking Based On Selection :109
Robotics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,981
3,138
0.150
* Total Citation Counts Rankings
Ranking Based On Selection :110
materials science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,734
12,486
0.602
* Total Citation Counts Rankings
Ranking Based On Selection :111
speech and natural language processing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,675
7,459
0.361
* Total Citation Counts Rankings
Ranking Based On Selection :112
Steel
Materials Science & Engineering
Physical Metallurgy
Phase Transformations
Hydrogen Embrittlement
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,428
10,303
0.504
* Total Citation Counts Rankings
Ranking Based On Selection :113
Crystal growth
Nitride Semiconductors
Optoelectronics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,364
3,504
0.172
* Total Citation Counts Rankings
Ranking Based On Selection :114
Hydrology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,325
14,719
0.724
* Total Citation Counts Rankings
Ranking Based On Selection :115
earthquake
tsunami
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,281
7,320
0.361
* Total Citation Counts Rankings
Ranking Based On Selection :116
Electron Microscopy
defects in semiconductors
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,162
4,131
0.205
* Total Citation Counts Rankings
Ranking Based On Selection :117
Bioinformatics
Biodatabase
Metabolome
Systems Biology
Omics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,148
6,867
0.341
* Total Citation Counts Rankings
Ranking Based On Selection :118
Augmented Reality
Virtual Reality
Human Computer Interaction
3D User Interface
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,718
5,818
0.295
* Total Citation Counts Rankings
Ranking Based On Selection :119
earth science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,658
5,316
0.270
* Total Citation Counts Rankings
Ranking Based On Selection :120
Planet formation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,627
6,358
0.324
* Total Citation Counts Rankings
Ranking Based On Selection :121
Liquid Crystal
Polymer
Optical Material
Material Engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,571
2,958
0.151
* Total Citation Counts Rankings
Ranking Based On Selection :122
Computational materials science
first principles calculations
semiconductors
defects
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,388
10,039
0.518
* Total Citation Counts Rankings
Ranking Based On Selection :123
Solvothermal
Sensor
Photocatalyst
Smart Windows
2D Materials
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,334
7,756
0.401
* Total Citation Counts Rankings
Ranking Based On Selection :124
solar cell
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,228
11,050
0.575
* Total Citation Counts Rankings
Ranking Based On Selection :125
Astronomy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,199
9,414
0.490
* Total Citation Counts Rankings
Rankings
35,790
508
2
Ranking Based On Selection: 101
Yukihiro Nojiri
Hirosaki University
Hirosaki, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,725
7,240
0.333
oceanography
biogeochemistry
geochemistry
carbon cycle
climate change
* Total Citation Counts Rankings
Rankings
36,134
513
12
Ranking Based On Selection: 102
Mitsuru Itoh
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,579
6,526
0.302
Solid state chemistry and physics
* Total Citation Counts Rankings
Rankings
36,180
515
3
Ranking Based On Selection: 103
Kuniharu Takei
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,560
12,222
0.567
Nanomaterials and electronics
* Total Citation Counts Rankings
Rankings
36,232
518
28
Ranking Based On Selection: 104
Motoytuki Sato
Tohoku University
Sendai, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,537
9,707
0.451
Radar
GPR
Antenna
Remote Sensing
* Total Citation Counts Rankings
Rankings
36,673
524
2
Ranking Based On Selection: 105
Keiichi Tokuda
Nagoya Institute of Technology
Nagoya, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,357
4,561
0.214
Speech Synthesis
Speech Recognition
Spoken Language Processing
Machine Learning
* Total Citation Counts Rankings
Rankings
36,846
526
13
Ranking Based On Selection: 106
Petter Holme
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,287
9,281
0.436
computational social science
network science
complex systems
temporal networks
* Total Citation Counts Rankings
Rankings
37,014
527
31
Ranking Based On Selection: 107
Harumi Yokokawa
University of Tokyo
Tokyo, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,214
4,538
0.214
* Total Citation Counts Rankings
Rankings
37,311
532
31
Ranking Based On Selection: 108
Eiji Ohtani
Tohoku University
Sendai, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,102
7,268
0.344
* Total Citation Counts Rankings
Rankings
37,614
537
2
Ranking Based On Selection: 109
Tsuneo Yoshikawa
Ritsumeikan University
Kyoto, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,981
3,138
0.150
* Total Citation Counts Rankings
Rankings
38,219
548
6
Ranking Based On Selection: 110
Akihiko Hirata
Waseda University
Tokyo, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,734
12,486
0.602
* Total Citation Counts Rankings
Rankings
38,383
553
2
Ranking Based On Selection: 111
Satoshi Nakamura
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,675
7,459
0.361
speech and natural language processing
* Total Citation Counts Rankings
Rankings
39,043
565
20
Ranking Based On Selection: 112
Kaneaki Tsuzaki
Kyushu University
Fukuoka, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,428
10,303
0.504
Steel
Materials Science & Engineering
Physical Metallurgy
Phase Transformations
Hydrogen Embrittlement
* Total Citation Counts Rankings
Rankings
39,242
570
2
Ranking Based On Selection: 113
Kazumasa Hiramatsu
Mie University
Tsu, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,364
3,504
0.172
Crystal growth
Nitride Semiconductors
Optoelectronics
* Total Citation Counts Rankings
Rankings
39,357
572
1
Ranking Based On Selection: 114
Naota Hanasaki
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,325
14,719
0.724
* Total Citation Counts Rankings
Rankings
39,473
575
34
Ranking Based On Selection: 115
Kenji Satake
University of Tokyo
Tokyo, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,281
7,320
0.361
* Total Citation Counts Rankings
Rankings
39,783
582
5
Ranking Based On Selection: 116
Takashi Sekiguchi
University of Tsukuba
Tsukuba, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,162
4,131
0.205
Electron Microscopy
defects in semiconductors
* Total Citation Counts Rankings
Rankings
39,828
584
4
Ranking Based On Selection: 117
Shigehiko Kanaya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,148
6,867
0.341
Bioinformatics
Biodatabase
Metabolome
Systems Biology
Omics
* Total Citation Counts Rankings
Rankings
41,011
603
5
Ranking Based On Selection: 118
Hirokazu Kato
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,718
5,818
0.295
Augmented Reality
Virtual Reality
Human Computer Interaction
3D User Interface
* Total Citation Counts Rankings
Rankings
41,203
606
6
Ranking Based On Selection: 119
Yoshiyuki Tatsumi
Kobe University
Kobe, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,658
5,316
0.270
* Total Citation Counts Rankings
Rankings
41,296
609
1
Ranking Based On Selection: 120
Shigeru Ida
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,627
6,358
0.324
* Total Citation Counts Rankings
Rankings
41,469
610
14
Ranking Based On Selection: 121
Junji Watanabe (渡邊順次)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,571
2,958
0.151
Liquid Crystal
Polymer
Optical Material
Material Engineering
* Total Citation Counts Rankings
Rankings
41,990
617
15
Ranking Based On Selection: 122
Fumiyasu Oba
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,388
10,039
0.518
Computational materials science
first principles calculations
semiconductors
defects
* Total Citation Counts Rankings
Rankings
42,129
620
36
Ranking Based On Selection: 123
Shu Yin
Tohoku University
Sendai, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,334
7,756
0.401
Solvothermal
Sensor
Photocatalyst
Smart Windows
2D Materials
* Total Citation Counts Rankings
Rankings
42,432
625
4
Ranking Based On Selection: 124
Qing Shen
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,228
11,050
0.575
* Total Citation Counts Rankings
Rankings
42,515
629
10
Ranking Based On Selection: 125
Koji S Kawabata
Hiroshima University
Higashihiroshima, Japan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,199
9,414
0.490