2021 tables: Institutions - Nature & Science - academic

The 2021 tables are based on Nature Index data from 1 January 2020 to 31 December 2020.

Table criteria

# Institution Share 2019 Share 2020 Count 2020 Change in Adjusted Share 2019-2020*
1 The University of Tokyo (UTokyo), Japan 13.21 10.46 61 -28.2%
2 Kyoto University, Japan 4.95 4.71 20 -13.8%
3 Nagoya University, Japan 1.56 3.12 12 80.8%
4 Okinawa Institute of Science and Technology Graduate University (OIST), Japan 0.30 2.53 8 665.3%
5 Tohoku University, Japan 1.60 2.25 15 27.8%
6 Osaka University, Japan 1.80 1.72 15 -13.2%
7 Tokyo Institute of Technology (Tokyo Tech), Japan 0.52 1.58 8 176.9%
8 Keio University, Japan 2.40 1.55 10 -41.4%
9 Kyushu University, Japan 1.06 1.37 8 17.1%
10 Hokkaido University, Japan 2.71 1.12 6 -62.6%
11 University of Tsukuba, Japan 0.22 0.81 5 228.1%
12 Gakushuin University, Japan 0.75 1 N/A
13 Chiba University, Japan 0.64 4 N/A
14 Okayama University, Japan 1.53 0.47 6 -71.9%
15 Tokushima University, Japan 1.01 0.42 1 -62.7%
16 Kanazawa University (KU), Japan 0.29 0.40 6 23.2%
17 Tokyo University of Agriculture and Technology (TUAT), Japan 0.05 0.39 2 575.9%
18 Kobe University, Japan 0.34 0.37 10 -1.5%
19 Hiroshima University (HU), Japan 0.23 0.36 5 43.1%
20 Shinshu University (SU), Japan 0.35 2 N/A
21 The Graduate University for Advanced Studies (Sokendai), Japan 0.58 0.32 5 -49.5%
22 Aichi Medical University, Japan 0.28 2 N/A
23 Tokyo University of Science (TUS), Japan 0.25 0.24 3 -12.0%
24 Rikkyo University, Japan 0.11 0.23 5 94.8%
25 Yokohama City University (YCU), Japan 0.14 0.23 8 43.4%
26 Utsunomiya University, Japan 0.06 0.23 2 226.4%
27 Niigata University, Japan 0.00 0.22 3 11,565.1%
28 Yamaguchi University, Japan 0.22 1 N/A
29 Chubu University, Japan 0.21 2 N/A
30 Tokyo Metropolitan University (TMU), Japan 0.09 0.20 3 100.6%
31 Chiba Institute of Technology, Japan 0.28 0.19 4 -37.5%
32 Waseda University, Japan 0.20 0.19 4 -14.9%
33 The University of Aizu, Japan 0.12 0.15 3 7.2%
34 Sophia University, Japan 0.13 2 N/A
35 Ritsumeikan University, Japan 0.12 3 N/A
36 Hokkaido Information University, Japan 0.12 1 N/A
37 Tokyo University of Agriculture, Japan 0.00 0.12 1 4,545.4%
38 Gunma University, Japan 0.10 1 N/A
39 Okayama University of Science, Japan 0.09 1 N/A
39 Ibaraki University, Japan 0.09 1 N/A
40 Nihon University, Japan 0.01 0.09 2 825.3%
41 Kochi University, Japan 0.08 0.08 4 -4.2%
42 Teikyo University, Japan 0.07 1 N/A
42 Ochanomizu University, Japan 0.07 1 N/A
43 Nagaoka University of Technology (NUT), Japan 0.06 1 N/A
44 The University of Shiga Prefecture, Japan 0.07 0.06 1 -25.3%
44 University of Yamanashi, Japan 0.06 1 N/A
45 Juntendo University, Japan 0.05 1 N/A
46 Fukushima Medical University (FMU), Japan 0.05 1 N/A
47 Tokyo Medical and Dental University (TMDU), Japan 0.99 0.05 4 -95.7%
48 Kyoto Prefectural University, Japan 0.04 2 N/A
49 Nagoya City University, Japan 0.04 1 N/A
50 Asahi University, Japan 0.04 1 N/A
51 Kanazawa Medical University, Japan 0.06 0.04 1 -41.0%
51 Hirosaki University, Japan 0.04 1 N/A
52 University of Shizuoka, Japan 0.00 0.03 1 413.8%
53 Kindai University, Japan 0.16 0.02 3 -86.5%
54 Iwate University, Japan 0.02 1 N/A
55 Shiga University of Medical Science (SUMS), Japan 0.02 1 N/A
56 Ehime University, Japan 0.56 0.02 1 -97.1%
56 Kurume University, Japan 0.02 1 N/A
57 Osaka City University (OCU), Japan 0.13 0.02 1 -88.7%
58 Sapporo Medical University, Japan 0.01 0.02 1 48.4%
59 Aichi Toho University, Japan 0.02 0.01 1 -13.4%
59 University of Occupational and Environmental Health (UOEH), Japan 0.01 1 N/A
60 Hokkaido University of Education, Japan 0.01 0.01 1 36.6%
60 Ashikaga University, Japan 0.02 0.01 1 -29.2%
60 Hokkaido Kitami Hokuto High School, Japan 0.01 1 N/A
61 Meiji University, Japan 0.04 0.01 1 -72.8%
62 Jichi Medical University, Japan 0.03 0.01 1 -67.6%
62 University of the Ryukyus, Japan 0.01 1 N/A
63 Yokohama National University (YNU), Japan 0.01 1 N/A
64 Fujita Health University, Japan 0.22 0.01 2 -96.8%
65 Tokyo City University, Japan 0.01 0.01 1 -38.3%
66 Nagasaki Institute of Applied Science, Japan 0.00 1 N/A
67 Miyagi University of Education, Japan 0.03 0.00 1 -92.6%
68 Wakayama Medical University, Japan 0.04 0.00 1 -95.3%
69 Tokyo Women's Medical University (TWMU), Japan 0.00 1 N/A
70 The Jikei University School of Medicine, Japan 0.00 0.00 1 17.9%
70 Kansai Medical University (KMU), Japan 0.00 0.00 1 17.9%
71 Nara Women's University (NWU), Japan 0.02 0.00 1 -95.6%
72 Tokyo University of Marine Science and Technology (TUMSAT), Japan 0.07 0.00 1 -99.1%
73 University of Fukui, Japan 0.00 1 N/A
73 Hamamatsu University School of Medicine, Japan 0.00 1 N/A

Footnote

Each year, the Nature Index publishes tables based on counts of high-quality research outputs in the previous calendar year. Users please note:

  1. The data behind the tables are based on a relatively small proportion of total research papers, they cover the natural sciences only and outputs are non-normalized (that is, they don’t reflect the size of the country or institution, or its overall research output).
  2. The Nature Index is one indicator of institutional research performance. The metrics of Count and Share used to order Nature Index listings are based on an institution’s or country’s publication output in 82 natural-science journals, selected on reputation by an independent panel of leading scientists in their fields.
  3. Nature Index recognizes that many other factors must be taken into account when considering research quality and institutional performance; Nature Index metrics alone should not be used to assess institutions or individuals.
  4. Nature Index data and methods are transparent and available under a creative commons licence at natureindex.com.

The Nature Index database undergoes regular updating, corrections, adjustment of institutional hierarchies, and removal of retracted papers and thus the live website can differ from the frozen annual tables.

*The change in adjusted Share accounts for the small annual variation in the total number of articles in Nature Index journals. Share values have been adjusted to 2020 levels to calculate the percentage change. For more information on the adjustment, please see the Adjusted metric explainer.