Twice a year, the National H-index Ranking analyses and evaluates the work of higher education institutions, research institutions, and scientists. Today we will look at how the positions of Bulgarian institutions in the international ranking have changed.
National H-index Ranking
The National H-index Ranking is an independent international indicator that measures the scientific performance of scientists and institutions in a particular country, based on the Hirsch index as the main evaluation parameter.
The Bulgarian National H-index Ranking assesses the scientific activity of Bulgarian researchers and institutions based on information from reputable international scientometric databases, including Web of Science (WoS), Scopus and Google Scholar.
What are the functions of the National H-index Ranking?
- Assessment of the scientific productivity of researchers and scientific institutions in Bulgaria.
- Comparison of scientific achievements at the national and international levels.
- Supporting the growth of scientific competitiveness and stimulating innovative projects.
- Establishing the main directions for the effective allocation of research funding.
Being among the leaders in such rankings brings recognition, reputation, funding, highly qualified specialists, talented students, etc. to institutions.
Bulgaria's Hirsch Index as of Q2 2025
| Scopus | Web of Science | Google Scholar |
| 408 | 364 | 514 |
Leaders in terms of scientific potential
| Organisation | National H-index | H-index (Scopus) | H-index (WoS) | H-index (Google Scholar) | ||
| 1 |  |
Bulgarian Academy of Sciences | 202 | 243 | 262 | 201 |
| 2 |  |
Sofia University “St. Kliment Ohridski” | 179 | 196 | 194 | 291 |
| 3 |  |
Medical University of Sofia | 140 | 157 | 191 | 142 |
| 4 |  |
Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences | 81 | 176 | 3 | 127 |
| 5 |  |
Medical University of Varna | 79 | 80 | 83 | 148 |
| 6 |  |
University of Chemical Technology and Metallurgy | 78 | 85 | 101 | 96 |
| 7 |  |
Medical University of Plovdiv | 77 | 87 | 91 | 106 |
| 8 |  |
Paisii Hilendarski University of Plovdiv | 63 | 74 | 68 | 92 |
| 9 |  |
Stephan Angeloff Institute of Microbiology | 60 | 84 | 47 | 97 |
| 10 | Trakia University | 59 | 69 | 62 | 94 |
The activities and indicators of 152 organisations were evaluated to form the ranking.
The Bulgarian National H-index Ranking serves as an important tool for analysing the effectiveness of the scientific work of researchers, academic institutions and higher education institutions. It helps to identify key areas of research development in Bulgaria and to recognise the achievements of researchers both nationally and internationally. The ranking encourages universities, research institutes and individual researchers to improve their performance and innovate.
Do you want to improve your performance in the ranking or be included in the next update? Contact Scientific Publications! For more than 9 years, we have been helping scientists from over 45 countries achieve their goals and new heights. Get a free consultation with our manager by filling out the form below, and we will contact you shortly. Together to new achievements
