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Bulgaria's Top 2% Scientists 2021
Bulgaria has 48 scientists on the 2021 single-year Top 2% list, up 37.1% from 35 in 2020. That places Bulgaria 70th in the world by number of listed scientists, down 1 place. Bulgarian Academy of Sciences has the most listed scientists (10), followed by Sofia University St. Kliment Ohridski (9).
Data Type
Year
Single Year
48
+13 (+37.1%) vs 2020
Career Data
73
+23 (+46.0%) vs 2020
World rank by count
#70
down 1 place vs 2020
Institutes
23
+7 (+43.8%) vs 2020
Scientists in Bulgaria on the list, by year
The single-year count has grown 37% since 2020.
Single-year list, change on the previous year
2021+37.1%
2022+14.6%
2023+5.5%
2024+20.7%
2025-10.0%
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
Single-year list2021
Show the list
- 1Bulgarian Academy of Sciences10
- 2Sofia University St. Kliment Ohridski9
- 3Medical University of Sofia3
- 4Bulgarian Academy of Sciences, Institute of Mineralogy and Crystallography “Acad. Ivan Kostov”2
- 5Institute of Electronics Bulgarian Academy of Sciences2
- 6Institute of Mathematics and Informatics Bulgarian Academy of Sciences2
- 7Institute of Plant Physiology and Genetics2
- 8Trakia University2
- 9University of Chemical Technology and Metallurgy Sofia2
- 10Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences1
All 48 scientists
Single-year list2021
| Rank in Bulgaria | World rank | Scientist | Institute | Sub-field | Rank in sub-field |
|---|---|---|---|---|---|
| 1 | 1,218 | Bulgarian Academy of Sciences | Artificial Intelligence & Image Processing | Rank 61 | |
| 2 | 9,972 | Institute of General and Inorganic Chemistry Bulgarian Academy of Sciences | Physical Chemistry | Rank 53 | |
| 3 | 10,276 | Trakia University | Dairy & Animal Science | Rank 13 | |
| 4 | 14,289 | Bulgarian Academy of Sciences | Medicinal & Biomolecular Chemistry | Rank 35 | |
| 5 | 20,881 | Bulgarian Academy of Sciences, Institute of Mineralogy and Crystallography “Acad. Ivan Kostov” | Energy | Rank 422 | |
| 6 | 21,495 | Sofia University St. Kliment Ohridski | Chemical Physics | Rank 394 | |
| 7 | 24,014 | Medical University of Sofia | Medicinal & Biomolecular Chemistry | Rank 64 | |
| 8 | 42,063 | University of Chemical Technology and Metallurgy Sofia | Chemical Engineering | Rank 263 | |
| 9 | 43,958 | Sofia University St. Kliment Ohridski | General Physics | Rank 240 | |
| 10 | 44,331 | Medical University of Plovdiv | Toxicology | Rank 169 | |
| 11 | 46,030 | Bulgarian Academy of Sciences | Chemical Physics | Rank 746 | |
| 12 | 49,200 | Varna University of Management | Sport, Leisure & Tourism | Rank 181 | |
| 13 | 50,516 | Institute of Mathematics and Informatics Bulgarian Academy of Sciences | Nuclear & Particle Physics | Rank 636 | |
| 14 | 56,510 | Institute of Plant Physiology and Genetics | Plant Biology & Botany | Rank 837 | |
| 15 | 56,892 | Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences | Nuclear & Particle Physics | Rank 709 | |
| 16 | 62,938 | Sofia University St. Kliment Ohridski | Applied Physics | Rank 1,282 | |
| 17 | 82,512 | Bulgarian Academy of Sciences | Biotechnology | Rank 317 | |
| 18 | 87,377 | Sofia University St. Kliment Ohridski | Chemical Physics | Rank 1,293 | |
| 19 | 94,737 | University of Chemical ?echnology and Metallurgy | Materials | Rank 1,796 | |
| 20 | 99,911 | Institute of Mathematics and Informatics Bulgarian Academy of Sciences | General Mathematics | Rank 568 | |
| 21 | 100,160 | Medical University of Sofia | Medicinal & Biomolecular Chemistry | Rank 326 | |
| 22 | 100,862 | University of Chemical Technology and Metallurgy Sofia | Applied Physics | Rank 2,128 | |
| 23 | 103,879 | Bulgarian Academy of Sciences | Energy | Rank 2,278 | |
| 24 | 115,280 | Sofia University St. Kliment Ohridski | Chemical Physics | Rank 1,680 | |
| 25 | 119,555 | Sofia University St. Kliment Ohridski | Chemical Physics | Rank 1,718 | |
| 26 | 121,701 | Medical University of Sofia | Microbiology | Rank 2,726 | |
| 27 | 126,133 | Sofia University St. Kliment Ohridski | Chemical Physics | Rank 1,817 | |
| 28 | 127,582 | Institute of Electronics Bulgarian Academy of Sciences | Organic Chemistry | Rank 1,904 | |
| 29 | 128,144 |
BM
|
Sofia University St. Kliment Ohridski | General Physics | Rank 711 |
| 30 | 130,979 | Bulgarian Academy of Sciences, Institute of Mineralogy and Crystallography “Acad. Ivan Kostov” | Energy | Rank 3,005 | |
| 31 | 142,319 | Bulgarian Academy of Sciences | Mechanical Engineering & Transports | Rank 1,317 | |
| 32 | 145,298 | Institute of Plant Physiology and Genetics | Plant Biology & Botany | Rank 2,297 | |
| 33 | 146,102 |
AI
|
Bulgarian Academy of Sciences | Applied Physics | Rank 3,163 |
| 34 | 146,884 | University Hospital Alexandrovska | Allergy | Rank 331 | |
| 35 | 157,577 | Bulgarian Academy of Sciences | Chemical Physics | Rank 2,219 | |
| 36 | 160,476 | LogiqWorks Ltd | Networking & Telecommunications | Rank 1,460 | |
| 37 | 201,382 | Bulgarian Academy of Sciences | Medicinal & Biomolecular Chemistry | Rank 822 | |
| 38 | 206,169 | Institute of Biodiversity and Ecosystem Research at the Bulgarian Academy of Sciences | Plant Biology & Botany | Rank 3,329 | |
| 39 | 228,959 | Technical University of Gabrovo | Mechanical Engineering & Transports | Rank 2,096 | |
| 40 | 231,605 | Onkoderma | Dentistry | Rank 1,147 | |
| 41 | 307,717 | Bulgarian Academy of Sciences | Fluids & Plasmas | Rank 2,138 | |
| 42 | 325,095 | Trakia University | Veterinary Sciences | Rank 873 | |
| 43 | 330,068 | Institute of Microbiology Bulgarian Academy of Sciences | Medicinal & Biomolecular Chemistry | Rank 1,648 | |
| 44 | 352,463 | Sofia University St. Kliment Ohridski | Organic Chemistry | Rank 5,683 | |
| 45 | 383,682 |
GM
|
Trakia University Faculty of Medicine | General & Internal Medicine | Rank 3,603 |
| 46 | 386,615 | Institute of Electronics Bulgarian Academy of Sciences | Optoelectronics & Photonics | Rank 1,173 | |
| 47 | 711,198 | University of Architecture Sofia | Materials | Rank 17,225 | |
| 48 | 2,356,304 | South-West University Neofit Rilski | General Chemistry | Rank 10,309 | |
| No scientists match this filter. | |||||
Showing 1 to 48 of 48
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Single-year list2021
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Single-year list2021
Frequently asked questions
How many scientists from Bulgaria are in the 2021 Stanford Top 2% list?
48 scientists affiliated with Bulgaria are on the 2021 single-year list, and 73 are on the career-long list.
Which institute in Bulgaria has the most Top 2% scientists?
On the 2021 single-year list, Bulgarian Academy of Sciences has the most listed scientists from Bulgaria, with 10. It is followed by Sofia University St. Kliment Ohridski with 9.
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 48 in 2021, a change of +37.1%.
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.