Bulgaria's Top 2% Scientists 2023
Bulgaria has 58 scientists on the 2023 single-year Top 2% list, up 5.5% from 55 in 2022. That places Bulgaria 71st in the world by number of listed scientists, down 3 places. Sofia University St. Kliment Ohridski has the most listed scientists (10), followed by Medical University of Sofia (4).
Scientists in Bulgaria on the list, by year
The single-year count has grown 66% since 2020.
Show the numbers
| Year | Single Year | Change | Career Data | Change |
|---|---|---|---|---|
| 2020 | 35 | 50 | ||
| 2021 | 48 | +37.1% | 73 | +46.0% |
| 2022 | 55 | +14.6% | 76 | +4.1% |
| 2023 | 58 | +5.5% | 79 | +3.9% |
| 2024 | 70 | +20.7% | 87 | +10.1% |
| 2025 | 63 | -10.0% | 91 | +4.6% |
Top 10 institutes in Bulgaria
By number of listed scientists
Show the list
- 1Sofia University St. Kliment Ohridski10
- 2Medical University of Sofia4
- 3Institute of Mechanics Bulgarian Academy of Sciences3
- 4Institute of Organic Chemistry with Centre of Phytochemistry (IOCCP) Bulgarian Academy of Sciences3
- 5University of Chemical Technology and Metallurgy Sofia3
- 6Bulgarian Academy of Sciences, Institute of Mineralogy and Crystallography “Acad. Ivan Kostov”2
- 7Georgi Nadjakov Institute of Solid State Physics Bulgarian Academy of Sciences2
- 8Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences2
- 9Institute of Mathematics and Informatics Bulgarian Academy of Sciences2
- 10Institute of Plant Physiology and Genetics2
All 58 scientists
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Frequently asked questions
How many scientists from Bulgaria are in the 2023 Stanford Top 2% list?
58 scientists affiliated with Bulgaria are on the 2023 single-year list, and 79 are on the career-long list.
Which institute in Bulgaria has the most Top 2% scientists?
On the 2023 single-year list, Sofia University St. Kliment Ohridski has the most listed scientists from Bulgaria, with 10. It is followed by Medical University of Sofia with 4.
How has the number of Top 2% scientists in Bulgaria changed since 2020?
On the single-year list, Bulgaria went from 35 scientists in 2020 to 58 in 2023, a change of +65.7%.
What is the difference between the single-year and career-long lists?
The single-year list ranks scientists on the citations their work received in one year. The career-long list ranks them on citations across their whole career. Both lists are published every year, and a scientist can be on one, both or neither.
What is the official source of this data?
The rankings come from the science-wide author databases of standardized citation indicators published by Ioannidis et al. in the Elsevier Data Repository, updated every year. TOPSCINET, an independent platform, organises that data by country, year, institute and field, so you can compare and explore it.