2021 tables: Institutions

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

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# Institution Share 2019 Share 2020 Count 2020 Change in Adjusted Share* 2019–2020
1 Koç University (KU), Turkey 3.44 8.93 35 149.9%
2 Istanbul Technical University (ITU), Turkey 12.07 7.44 69 -40.6%
3 Bilkent University, Turkey 13.59 7.09 25 -49.7%
4 Middle East Technical University (METU), Turkey 2.75 4.41 79 54.9%
5 Boğaziçi University (BU), Turkey 5.03 3.21 108 -38.4%
6 Gebze Technical University (GYTE), Turkey 0.76 2.79 8 254.7%
7 Marmara University, Turkey 0.63 2.62 44 298.9%
8 Istanbul University, Turkey 1.09 2.39 70 110.1%
9 Kocaeli University, Turkey 1.42 2.19 5 48.9%
10 Özyeğin University, Turkey 0.56 2.09 36 258.1%
11 Dokuz Eylül University, Turkey 0.73 1.70 12 123.9%
12 Hacettepe University, Turkey 0.89 1.55 45 68.2%
13 Bolu Abant İzzet Baysal University (BAIBU), Turkey 0.52 1.51 4 182.1%
14 Uludag University, Turkey 0.41 1.39 8 223.5%
15 Karamanoğlu Mehmetbey University (KMU), Turkey 0.16 1.33 37 709.1%
16 Izmir Institute of Technology (IZTECH), Turkey 2.65 1.31 36 -52.5%
17 Sabanci University (SU), Turkey 2.00 1.16 6 -43.9%
18 Başkent University, Turkey 0.02 1.11 2 4828.2%
19 Yildiz Technical University (YTU), Turkey 0.38 1.07 2 175.5%
20 Pamukkale University (PAU), Turkey – 1.01 2 N/A
21 Erciyes University, Turkey 0.16 0.99 3 504.7%
22 Doğuş University (DOU), Turkey 0.40 0.86 3 106.1%
23 Akdeniz University, Turkey 0.50 0.83 2 60.7%
23 University of Yüzüncü, Turkey – 0.83 1 N/A
24 Eskişehir Technical University, Turkey 0.02 0.82 1 4633.4%
25 Aydın Adnan Menderes University (ADU), Turkey 0.41 0.70 3 65.5%
26 Ankara University, Turkey 1.42 0.61 55 -58.2%
27 University of Turkish Aeronautical Association (UTAA), Turkey 0.33 0.58 2 68.7%
28 Cumhuriyet University, Turkey 0.03 0.56 8 2073.7%
29 Çukurova University, Turkey 0.80 0.56 48 -33.1%
30 Ataturk University, Turkey 0.52 0.43 4 -20.1%
31 Canakkale Onsekiz Mart University (COMU), Turkey 0.43 0.42 2 -6.4%
32 Giresun University, Turkey 0.34 0.40 21 15.4%
33 Mimar Sinan Fine Arts University, Turkey 0.08 0.34 33 315.6%
34 Suleyman Demirel University, Turkey 0.33 0.33 1 -3.6%
35 Mersin University, Turkey 0.01 0.30 34 3746.4%
36 Izmir Kâtip Celebi University, Turkey 0.13 0.30 5 124.3%
37 Istanbul Aydin University (IAU), Turkey 0.05 0.30 75 437.1%
38 Eskisehir Osmangazi University, Turkey 0.13 0.29 5 123.4%
39 Uşak University, Turkey 0.50 0.25 1 -51.8%
40 Aksaray University, Turkey – 0.24 2 N/A
41 Balıkesir University (BAUN), Turkey – 0.23 2 N/A
42 Soyak Göztepe Sitesi, Turkey – 0.20 1 N/A
43 Medipol University, Turkey 0.53 0.19 1 -64.5%
44 Atilim University, Turkey – 0.19 2 N/A
45 Gazi University, Turkey 0.91 0.18 2 -80.8%
46 Istanbul Bilgi University, Turkey 0.22 0.17 88 -25.5%
47 Hasan Kalyoncu University (HKU), Turkey 0.10 0.17 1 59.6%
48 Trakya University, Turkey 0.08 0.16 1 93.1%
49 Erzurum Technical University (ETU), Turkey – 0.15 2 N/A
50 Istanbul Medeniyet University (IMU), Turkey 0.08 0.14 1 65.3%
50 Bursa Technical University (BTU), Turkey 0.13 0.14 1 10.2%
51 Kafkas University, Turkey 0.01 0.13 33 1601.0%
52 Bahçeci Fertility, Turkey – 0.13 1 N/A
53 Acibadem Mehmet Ali Aydinlar University (ACU), Turkey – 0.13 4 N/A
54 Muğla Sıtkı Koçman University (MSKU), Turkey 0.20 0.13 1 -39.7%
54 Kadir Has University (KHU), Turkey – 0.13 2 N/A
55 Bahcesehir University (BAU), Turkey 0.22 0.12 44 -47.8%
56 Ege University, Turkey 1.39 0.10 4 -93.0%
57 Diyarbakır Memorial Hospital (DMH), Turkey – 0.09 1 N/A
58 Turkish-German University (TAU), Turkey – 0.08 1 N/A
59 Recep Tayyip Erdogan University, Turkey – 0.07 1 N/A
59 Turgut Illaclari A.S, Turkey – 0.07 1 N/A
60 Bakırköy Dr. Sadi Konuk Research And Training Hospital, Turkey – 0.06 2 N/A
61 Faculty of Science, Trakya University, Turkey – 0.06 1 N/A
62 Near East University (NEU), Turkey 0.06 0.06 25 -6.9%
63 University of Gaziantep (GAUN), Turkey 0.05 0.06 43 25.1%
64 Dicle University, Turkey 0.04 0.05 1 28.6%
65 Maltepe University, Turkey – 0.05 1 N/A
66 Adıyaman University, Turkey 0.18 0.05 33 -74.3%
67 Gaziantep Children's Hospital, Turkey – 0.04 1 N/A
67 Yıldırım Beyazıt University (YBU), Turkey – 0.04 1 N/A
67 A.Y. Ankara Oncology Training and Research Hospital, Turkey – 0.04 1 N/A
68 KTO Karatay University, Turkey 0.03 0.04 22 26.0%
69 Abdullah Gül University, Turkey 0.57 0.04 1 -92.9%
69 İskenderun Technical University (ISTE), Turkey – 0.04 1 N/A
70 Beykent University, Turkey 0.01 0.04 34 300.3%
71 Yeditepe University, Turkey 0.12 0.04 2 -70.7%
72 University of Health Sciences (SBU), Turkey 0.09 0.04 2 -60.3%
73 Eskisehir City Hospital, Turkey – 0.04 1 N/A
74 Mustafa Kemal University, Turkey 0.07 0.03 1 -50.1%
74 Ibn Haldun University (IHU), Turkey – 0.03 1 N/A
75 Ankara Numune Training and Research Hospital (ANH), Turkey – 0.03 1 N/A
76 Suna and İnan Kıraç Foundation, Turkey – 0.03 1 N/A
77 Yeditepe University Hospital, Turkey – 0.03 1 N/A
77 Gazi Yaşargil Education and Research Hospital, Turkey – 0.03 1 N/A
78 Necmettin Erbakan University, Turkey 0.04 0.03 6 -38.8%
79 TOBB University of Economics and Technology, Turkey 0.03 0.02 43 -11.4%
80 Bezmialem Vakıf University, Turkey 0.03 0.02 1 -20.0%
81 Konya Food and Agriculture University (KFAU), Turkey – 0.02 1 N/A
82 Karadeniz Technical University (KTU), Turkey 0.17 0.02 2 -88.7%
83 Kartal Dr. Lutfi Kirdar Research and Training Hospital, Turkey – 0.02 1 N/A
84 Guven Hospital, Turkey – 0.02 1 N/A
85 Niğde Ömer Halisdemir University, Turkey 0.20 0.01 1 -93.1%
85 Istanbul Sabahattin Zaim University (IZU), Turkey – 0.01 1 N/A
86 Medical Park Hospitals Group, Turkey – 0.01 1 N/A
86 Kahramanmaraş Sütçüimam University (KSU), Turkey – 0.01 1 N/A
87 Karabük University, Turkey – 0.01 1 N/A
88 Southwest Anatolia Forest Research Institute (SAFRI), Turkey – 0.01 1 N/A
89 Haseki Training and Research Hospital, Turkey – 0.01 1 N/A
89 Sisli Hamidiye Etfal Training and Research Hospital, Turkey – 0.01 1 N/A
90 Konya Eğitim ve Araştırma Hastanesi, Turkey – 0.01 1 N/A
91 Celal Bayar University (CBÜ), Turkey 0.03 0.01 1 -79.6%
91 University of Hittite, Turkey – 0.01 1 N/A
92 Piri Reis University, Turkey 0.01 0.01 32 -10.2%
93 Bingöl University, Turkey 0.01 0.01 32 -12.9%
93 Sinop University, Turkey 0.19 0.01 32 -96.6%
94 Sirnak University, Turkey 0.00 0.01 31 210.4%
94 Erzincan Binali Yıldırım University, Turkey 0.04 0.01 31 -82.1%
95 Gaziosmanpaşa University, Turkey 0.01 0.01 24 -32.9%
96 Burdur Mehmet Akif Ersoy University, Turkey 0.80 0.00 19 -99.5%
97 Yozgat Bozok University, Turkey 0.04 0.00 8 -95.7%
98 National Defense University (NDU), Turkey – 0.00 7 N/A
99 Istanbul Arel University, Turkey 0.00 0.00 1 -8.1%

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 through 2022, in 2023 64 health-science journals were added to the Index. The 146 journals in the Nature Index were 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 nature.com/nature-index/.
  5. Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

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 2022 levels to calculate the percentage change. For more information on the adjustment, please see the Adjusted metric explainer.


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