Bulgaria's Top 2% Scientists 2022: Career-Long List

Bulgaria has 76 scientists on the 2022 career-long Top 2% list, up 4.1% from 73 in 2021. That places Bulgaria 51st in the world by number of listed scientists, down 1 place. Sofia University St. Kliment Ohridski has the most listed scientists (13), followed by Bulgarian Academy of Sciences (7).

Single Year

+7 (+14.6%) vs 2021

Career Data

+3 (+4.1%) vs 2021

World rank by count

#51

down 1 place vs 2021

Institutes

+2 (+6.2%) vs 2021

Scientists in Bulgaria on the list, by year

The career-long count has grown 52% since 2020.

Career-long list, change on the previous year

2021+46.0%

2022+4.1%

2023+3.9%

2024+10.1%

2025+4.6%

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

Career-long list2022

Show the list

All 76 scientists

Career-long list2022

Everyone on the list, free to browse.

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Rank in Bulgaria	World rank	Scientist	Institute	Sub-field	Rank in sub-field
1	641	MM Maes, Michael	Medical University of Plovdiv	Psychiatry	Rank 22
2	6,199	AK Atanassov, Krassimir	Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences	Artificial Intelligence & Image Processing	Rank 121
3	13,946	HK Hadjiivanov, Konstantin	Institute of General and Inorganic Chemistry Bulgarian Academy of Sciences	Physical Chemistry	Rank 54
4	17,260	SP Surai, Peter F.	Trakia University Faculty of Veterinary Medicine	Dairy & Animal Science	Rank 16
5	22,960	BV Bankova, Vassya	Institute of Organic Chemistry with Centre of Phytochemistry (IOCCP) Bulgarian Academy of Sciences	Medicinal & Biomolecular Chemistry	Rank 65
6	30,695	DN Denkov, N.	Sofia University St. Kliment Ohridski	Chemical Physics	Rank 704
7	31,719	KD Kashchiev, Dimo	Institute of Physical Chemistry Bulgarian Academy of Sciences	Chemical Physics	Rank 727
8	35,786	PV Popov, V. N.	Sofia University St. Kliment Ohridski	Applied Physics	Rank 942
9	39,080	KI Kostova, Irena	Medical University of Sofia	Medicinal & Biomolecular Chemistry	Rank 106
10	41,491	VN Vitanov, N. V.	Sofia University St. Kliment Ohridski	General Physics	Rank 259
11	45,313	PD Pavlov, D.	Bulgarian Academy of Sciences	Energy	Rank 491
12	50,593	KP Kralchevsky, Peter A.	Sofia University St. Kliment Ohridski	Chemical Physics	Rank 1,104
13	56,116	VS Vassilev, Stanislav V.	Bulgarian Academy of Sciences, Institute of Mineralogy and Crystallography “Acad. Ivan Kostov”	Energy	Rank 623
14	59,643	MA Milchev, Andrey	Institute of Physical Chemistry Bulgarian Academy of Sciences	Chemical Physics	Rank 1,295
15	77,780	CI Christov, Ivan P.	Institute of Electronics Bulgarian Academy of Sciences	Optoelectronics & Photonics	Rank 246
16	81,655	II Ivanov, Ivan T.	Sofia University St. Kliment Ohridski	Chemical Physics	Rank 1,670
17	87,058	YS Yazadjiev, Stoytcho	Institute of Mathematics and Informatics Bulgarian Academy of Sciences	Nuclear & Particle Physics	Rank 1,430
18	90,364	HJ Hristov, Jordan	University of Chemical Technology and Metallurgy Sofia	Chemical Engineering	Rank 385
19	91,397	DK Danov, Krassimir D.	Sofia University St. Kliment Ohridski	Chemical Physics	Rank 1,846
20	93,737	DV Dimitrov, Vesselin	University of Chemical Technology and Metallurgy Sofia	Applied Physics	Rank 2,591
21	98,872	VG Vayssilov, Georgi N.	Sofia University St. Kliment Ohridski	Chemical Physics	Rank 1,984
22	108,688	AD Andreeva, D.	Institute of Catalysis Bulgarian Academy of Sciences	Physical Chemistry	Rank 391
23	108,847	AI Avramov, I.	Bulgarian Academy of Sciences	Applied Physics	Rank 3,050
24	109,585	MO Mekenyan, Ovanes	Bourgas Prof. Assen Zlatarov University	Medicinal & Biomolecular Chemistry	Rank 363
25	110,096	GI Grabchev, Ivo	Sofia University St. Kliment Ohridski	Organic Chemistry	Rank 2,021
26	122,237	BM Bojinov, Martin	University of Chemical Technology and Metallurgy Sofia	Energy	Rank 1,469
27	123,074	PD Pancheva, D.	National Institute of Geophysics, Geodesy and Geography, Bulgarian Academy of Sciences	Meteorology & Atmospheric Sciences	Rank 1,871
28	130,809	VV Velikova, Violeta	Institute of Plant Physiology and Genetics	Plant Biology & Botany	Rank 1,854
29	134,596	BV Bojinov, Vladimir B.	University of Chemical Technology and Metallurgy Sofia	Organic Chemistry	Rank 2,442
30	135,527	MA Milchev, Alexander	Bulgarian Academy of Sciences	Energy	Rank 1,678
31	141,808	TD Tsalev, Dimiter L.	Sofia University St. Kliment Ohridski	Analytical Chemistry	Rank 1,103
32	153,112	KD Karagiozova, Dora	Institute of Mechanics Bulgarian Academy of Sciences	Mechanical Engineering & Transports	Rank 1,058
33	154,629	DI Doytchinova, Irini	Medical University of Sofia	Medicinal & Biomolecular Chemistry	Rank 567
34	160,997	TB Tenchov, Boris	Medical University of Sofia	Biophysics	Rank 265
35	167,913	AL Antonov, Liudmil	Institute of Electronics Bulgarian Academy of Sciences	Organic Chemistry	Rank 2,998
36	172,073	SS Stoyanov, Stoyan	Bulgarian Academy of Sciences	Applied Physics	Rank 4,986
37	174,618	GM Georgiev, Milen I.	Center of Plant Systems Biology and Biotechnology	Biotechnology	Rank 540
38	184,953	DV Dobrev, V. K.	Institute for Nuclear Research and Nuclear Energy Bulgarian Academy of Sciences	Nuclear & Particle Physics	Rank 3,031
39	185,144	IV Iliev, Vesselin	Institute of Catalysis Bulgarian Academy of Sciences	Physical Chemistry	Rank 682
40	186,513	CI Christov, Ivaylo	Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences	Biomedical Engineering	Rank 800
41	187,654	PA Popova, Angelina K.	University of Chemical Technology and Metallurgy Sofia	Materials	Rank 2,528
42	188,144	YN Yordanov, N. D.	Institute of Catalysis Bulgarian Academy of Sciences	Inorganic & Nuclear Chemistry	Rank 1,243
43	188,252	CC Christov, Christomir	Konstantin Preslavsky University of Shumen	Chemical Engineering	Rank 919
44	193,246	KV Kiryakova, Virginia	Institute of Mathematics and Informatics Bulgarian Academy of Sciences	General Mathematics	Rank 1,292
45	195,537	RA Rachev, Alexander	Institute of Mechanics Bulgarian Academy of Sciences	Biomedical Engineering	Rank 834
46	205,169	GI Gutzow, Ivan S.	Institute of Physical Chemistry Bulgarian Academy of Sciences	Applied Physics	Rank 6,000
47	208,095	PA Petrov, A. G.	Bulgarian Academy of Sciences	Applied Physics	Rank 6,076
48	210,276	Stoev, Stoycho D.	Trakia University Faculty of Veterinary Medicine	Veterinary Sciences	Rank 871
49	210,559	VN Vitanov, Nikolay K.	Institute of Mechanics Bulgarian Academy of Sciences	Fluids & Plasmas	Rank 1,789
50	226,766	ZV Zimparov, Ventsislav D.	Technical University of Gabrovo	Mechanical Engineering & Transports	Rank 1,650
51	227,626	TV Tsakova, V.	Institute of Physical Chemistry Bulgarian Academy of Sciences	Energy	Rank 3,083
52	237,985	KI Karadjova, Irina	Sofia University St. Kliment Ohridski	Analytical Chemistry	Rank 2,050
53	239,012	TK Troev, Kolio	Institute of Polymers Bulgarian Academy of Sciences	Polymers	Rank 2,189
54	244,199	KT Kolev, Tsonko	Bulgarian Academy of Sciences	Inorganic & Nuclear Chemistry	Rank 1,672
55	255,690	SJ Serkedjieva, Julia	Institute of Microbiology Bulgarian Academy of Sciences	Medicinal & Biomolecular Chemistry	Rank 1,155
56	256,887	KA Karamanov, Alexandar	Institute of Physical Chemistry Bulgarian Academy of Sciences	Materials	Rank 3,640
57	262,732	AS Armyanov, S.	Institute of Physical Chemistry Bulgarian Academy of Sciences	Energy	Rank 3,672
58	263,864	SV Simeonov, Vasil	Sofia University St. Kliment Ohridski	Environmental Sciences	Rank 1,851
59	270,769	GM Gulubova, Maya Vladova	Trakia University Faculty of Medicine	General & Internal Medicine	Rank 3,619
60	287,099	PP Peshev, P.	Institute of General and Inorganic Chemistry Bulgarian Academy of Sciences	Materials	Rank 4,128
61	290,973	MN Mastorakis, Nikos E.	Technical University of Sofia	Artificial Intelligence & Image Processing	Rank 5,612
62	294,522	AE Atanassova, Elena	Georgi Nadjakov Institute of Solid State Physics Bulgarian Academy of Sciences	Applied Physics	Rank 8,859
63	322,991	VD Vakarelov, Dimiter	Sofia University St. Kliment Ohridski	Artificial Intelligence & Image Processing	Rank 6,300
64	328,281	SR Stoyanova, Radostina	Institute of General and Inorganic Chemistry Bulgarian Academy of Sciences	Energy	Rank 4,838
65	331,084	SD Stoychev, D.	Institute of Physical Chemistry Bulgarian Academy of Sciences	Energy	Rank 4,884
66	336,972	SZ Stoynov, Zdravko	Bulgarian Academy of Sciences	Energy	Rank 5,006
67	407,278	VG Vassilev, Gueorgui	Plovdiv University Paisii Hiledarski	Materials	Rank 6,212
68	423,796	AW Addington, Whitney	London School of Hygiene & Tropical Medicine	General & Internal Medicine	Rank 5,940
69	424,177	NL Nikolova, Ludmila	Central Laboratory of Optical Storage and Processing of Information Bulgarian Academy of Sciences	Optoelectronics & Photonics	Rank 2,081
70	432,264	GS Groudev, Stoyan	University of Mining and Geology St. Ivan Rilski	Mining & Metallurgy	Rank 244
71	458,727	TT Todorov, Todor	Central Laboratory of Optical Storage and Processing of Information Bulgarian Academy of Sciences	Optoelectronics & Photonics	Rank 2,308
72	507,040	PM Panayotova, Marinela	University of Mining and Geology St. Ivan Rilski	Mining & Metallurgy	Rank 298
73	509,936	RV Rizov, Victor	University of Architecture, Civil Engineering and Geodesy	Materials	Rank 8,106
74	544,740	DI Dimov, Ivan	Institute of Information and Communication Technologies, Bulgarian Academy of Sciences	Artificial Intelligence & Image Processing	Rank 11,212
75	617,239	DT Dachev, Ts P.	Space Research and Technology Institute	Aerospace & Aeronautics	Rank 1,480
76	620,362	KM Karavasteva, M.	Sofia University St. Kliment Ohridski	Mining & Metallurgy	Rank 394
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Showing 1 to 76 of 76 Show

Countries with a similar count

Career-long list2022

Qatar110 scientistsin 2022

Ukraine96 scientistsin 2022

Nigeria87 scientistsin 2022

Serbia73 scientistsin 2022

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Career-long list2022

Poland1,006 scientistsin 2022

Russia887 scientistsin 2022

Czech Republic461 scientistsin 2022

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United Kingdom17,986 scientistsin 2022

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Frequently asked questions

How many scientists from Bulgaria are in the 2022 Stanford Top 2% list?

55 scientists affiliated with Bulgaria are on the 2022 single-year list, and 76 are on the career-long list.

Which institute in Bulgaria has the most Top 2% scientists?

On the 2022 career-long list, Sofia University St. Kliment Ohridski has the most listed scientists from Bulgaria, with 13. It is followed by Bulgarian Academy of Sciences with 7.

How has the number of Top 2% scientists in Bulgaria changed since 2020?

On the career-long list, Bulgaria went from 50 scientists in 2020 to 76 in 2022, a change of +52.0%.

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.