Top 100 Scientists

World Top 100 Scientists 2025

Top 100 scientists can be ranked globally or specific to the following regions including Africa, Asia, Europe, North America, Latin America, Oceania, Arab League, ASEAN, EECA, and BRICS based on total H-index scores without any breakdown by subject areas. Top 100 rankings in the world, in a continent, or a region include standardized subjects areas of Agriculture & Forestry, Arts, Design and Architecture, Business & Management, Economics & Econometrics, Education, Engineering & Technology, History, Philosophy, Theology, Law/Law and Legal Studies, Medical and Health Sciences, Natural Sciences, Social Sciences, Art and Humanities Rankings and Social Sciences and Humanities Rankings BETA VERSION. Subject field ranking in world, region, country and university is beta version since subject field "others" (873,690 scientists profile whose branch cannot be determined, not yet edited or determined) is excluded, so the ranking will change as the others fields are edited. Please note that. Subjects indicated as “ * others ” will not be included in the ranking by regions and subjects.

* Rankings
Ranking Based On Selection: 1
Petar Temnikov
High Energy Physics
Astroparticle Physics
Artificial Inteligence
Metrics
H-Index
i10 Index
Citation
93
275
31,254
* Rankings
Ranking Based On Selection: 2
Galina Maneva
Nuclear Physics
Astrophysics
Artificial Intelligence
Electrodynamics
Metrics
H-Index
i10 Index
Citation
83
189
26,358
* Rankings
Ranking Based On Selection: 4
Martin Makariev
физика и астрофизка на елементарните частици
Metrics
H-Index
i10 Index
Citation
73
203
24,954
* Rankings
Ranking Based On Selection: 6
Krassimir Atanassov
Mathematical Modelling
Artificial Intelligence
Intuitionistic Fuzzy Sets
Generalized Nets
Number Theory Network Physiology
Metrics
H-Index
i10 Index
Citation
57
257
45,474
* Rankings
Ranking Based On Selection: 7
Andrey Milchev
statistical physics
soft condensed matter
computer modeling
Metrics
H-Index
i10 Index
Citation
54
193
9,720
* Rankings
Ranking Based On Selection: 8
Milen I. Georgiev
Molecular Biotechnology
Metabolomics
Natural Products
Molecular Pharmacology
Metrics
H-Index
i10 Index
Citation
51
134
12,573
* Rankings
Ranking Based On Selection: 10
Radostina Stoyanova
solid state chemistry
EPR spectroscopy
materials for energy storage
sodium/lithium ion batteries
intercalation chemistry
Metrics
H-Index
i10 Index
Citation
48
153
7,727

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* Rankings
Ranking Based On Selection: 11
Nikolay K Vitanov
nonlinear PDEs
nonlinear time series analysis
nonlinear fluid dynamics
social dynamics
mathematical economics
Metrics
H-Index
i10 Index
Citation
47
103
5,806
* Rankings
Ranking Based On Selection: 14
Violeta Velikova
Biogenic volatile organic compounds
photosynthesis
Metrics
H-Index
i10 Index
Citation
43
74
13,366
* Rankings
Ranking Based On Selection: 18
Tsonko Tsonev
Plant ecophysiology
Photosynthesis
Plant biology
Plant stress physiology
Metrics
H-Index
i10 Index
Citation
41
67
5,939
* Rankings
Ranking Based On Selection: 20
Maxim Boyanov
biogeochemistry
adsorption
redox
contaminant fate and transport
EXAFS
Metrics
H-Index
i10 Index
Citation
39
70
5,934
* Rankings
Ranking Based On Selection: 27
ivan dimov
Monte Carlo methods
Parallel algorithms
Mathematical modeling
Metrics
H-Index
i10 Index
Citation
36
115
4,636
* Rankings
Ranking Based On Selection: 32
Dora Karagiozova
Solid mechanics
Behaviour of inelastic structures subjected to blast and impact
Stress wave propagation
Mechanical properties
Metrics
H-Index
i10 Index
Citation
35
67
4,144
* Rankings
Ranking Based On Selection: 36
Alexander G. Petrov
Soft Matter Physics
Living Matter Physics
Liquid Crystals
Metrics
H-Index
i10 Index
Citation
34
82
3,586
* Rankings
Ranking Based On Selection: 37
Svetoslav Markov
biomathematics
interval analysis
enzyme kinetics
mathematical modelling
Metrics
H-Index
i10 Index
Citation
33
82
3,839
* Rankings
Ranking Based On Selection: 38
I Avramov
viscosity
glass transition
kinetics of phase transformation
Metrics
H-Index
i10 Index
Citation
33
82
3,728
* Rankings
Ranking Based On Selection: 40
Petko Denev
phytochemistry
natural products
antioxidants
functional foods
Metrics
H-Index
i10 Index
Citation
32
66
4,480
* Rankings
Ranking Based On Selection: 41
Katya Georgieva
photosynthesis
abiotic stress
chlorophyll fluorescence
resurrection plants
Metrics
H-Index
i10 Index
Citation
32
61
2,768
* Rankings
Ranking Based On Selection: 44
Vessela Tsakova
electrochemical phase formation
conducting polymers
electroanalysis
Metrics
H-Index
i10 Index
Citation
32
63
2,932
* Rankings
Ranking Based On Selection: 47
SK Stefanov
Monte Carlo methods
rarefied gas dynamics
microfluidics
physics of fluids
Metrics
H-Index
i10 Index
Citation
30
61
2,698
* Rankings
Ranking Based On Selection: 48
Nadya Markova
microbiology
infection
immunity
vaccination
Metrics
H-Index
i10 Index
Citation
30
58
2,473
* Rankings
Ranking Based On Selection: 51
Vladimir Dobrev
general theoretical and mathematical physics
group-theoretical methods
conformal field theory
supersymmetry
quantum groups
Metrics
H-Index
i10 Index
Citation
30
80
4,232
* Rankings
Ranking Based On Selection: 52
Vasko Idakiev
хетерогенен катализ
Metrics
H-Index
i10 Index
Citation
29
41
4,264
* Rankings
Ranking Based On Selection: 53
Emil Nissimov
general theoretical and mathematical physics
strings/branes
wormholes
dark energy & dark matter
supersymmetry
Metrics
H-Index
i10 Index
Citation
29
76
3,322
* Rankings
Ranking Based On Selection: 54
Roumiana P. Stateva
Chemical engineering
chemical engineering thermodynamics
Metrics
H-Index
i10 Index
Citation
29
59
2,581
* Rankings
Ranking Based On Selection: 58
Svetlana Pacheva
general theoretical and mathematical physics
strings/branes with applications to black hole and wormhole physics and cosmology
non-perturbative aspects of quantum gauge theories
supersymmetry
Metrics
H-Index
i10 Index
Citation
28
72
2,439
* Rankings
Ranking Based On Selection: 61
Zlatinka I Dimitrova
nonlinear partial differential equations
mathematical modeling
complex systems
Metrics
H-Index
i10 Index
Citation
27
42
2,416
* Rankings
Ranking Based On Selection: 62
Emilia Apostolova
photosynthesis
thylakoid membranes
abiotic stress
oxygen evolution
biosensors
Metrics
H-Index
i10 Index
Citation
27
46
1,883
* Rankings
Ranking Based On Selection: 63
Jana Tchekalarova
Epilepsy Neuropharmacology EEG Angiotensin system Neurodegenerative disease
Metrics
H-Index
i10 Index
Citation
27
72
2,259
* Rankings
Ranking Based On Selection: 66
Vessela Krasteva
biomedical engineering
signal processing
cardiac arrhythmia
defibrillation
biometrics
Metrics
H-Index
i10 Index
Citation
27
45
2,091
* Rankings
Ranking Based On Selection: 71
Boryana Nikolova-Damyanova
lipid chemistry
lipid analysis
analysis of bioactive natural compounds
Metrics
H-Index
i10 Index
Citation
27
54
2,897
* Rankings
Ranking Based On Selection: 76
Olympia Roeva
Meta-heuristic Algorithms
Artificial Intelligence
Modelling
Parameter Identification
Bioprocess Optimization and Control
Metrics
H-Index
i10 Index
Citation
26
81
2,530
* Rankings
Ranking Based On Selection: 77
Ekaterina Batchvarova
Boundary-layer meteorology
air pollution
exchange processes
urban-coastal-marine meteorology
energy meteorology
Metrics
H-Index
i10 Index
Citation
26
47
3,690
* Rankings
Ranking Based On Selection: 80
Peter IY Velinov
Space physics
Solar-terrestrial physics
Cosmic rays
Solar energetic particles
Ionization in atmosphere
Metrics
H-Index
i10 Index
Citation
26
76
2,356
* Rankings
Ranking Based On Selection: 82
Evgeni Ivanov
His fields of research is related with polymer nanocomposites: rheological
structural
thermal
physical
mechanical properties
Metrics
H-Index
i10 Index
Citation
25
42
1,915
* Rankings
Ranking Based On Selection: 83
Valya Vassileva
Regulation of gene expression
DNA methylation
cell biology
Metrics
H-Index
i10 Index
Citation
25
39
3,281
* Rankings
Ranking Based On Selection: 85
Svilen Sabchevski
Gyrotrons
Terahertz waves
Electron beams
Electron devices
Computational Electromagnetics
Metrics
H-Index
i10 Index
Citation
25
52
2,089
* Rankings
Ranking Based On Selection: 87
Christo Nanev
Crystal growth
Crystal nucleation
Instability of polyhedral crystal shapes
Cloud Condensation Nuclei
Metrics
H-Index
i10 Index
Citation
25
56
1,915
* Rankings
Ranking Based On Selection: 90
Ivalina Avramova
corrosion
surface science
thin oxide films
catalysts and photocatalysts
Metrics
H-Index
i10 Index
Citation
24
45
1,814
* Rankings
Ranking Based On Selection: 91
Diana Nihtianova
структурна кристалография
материалознание
Metrics
H-Index
i10 Index
Citation
24
54
2,397
* Rankings
Ranking Based On Selection: 92
Maria Angelova
Mycology
Oxidative stress: biomarkers
cell responce
antioxidant defence
Metrics
H-Index
i10 Index
Citation
24
43
1,992
* Rankings
Ranking Based On Selection: 96
Vesselin Iliev
Environmental catalysis
Photocatalysis
Waste water cleaning
Destruction of volatile organic compounds
Solar energy utilizati
Metrics
H-Index
i10 Index
Citation
24
29
2,419
* Rankings
Ranking Based On Selection: 97
Diana Nesheva
semiconductors
bulk materials and thin films
nanosized and nanostructured materials
Metrics
H-Index
i10 Index
Citation
24
58
2,056
* Rankings
Ranking Based On Selection: 98
Vesselin Kussovski
infectious microbiology
photodynamic therapy
antimicrobials
Metrics
H-Index
i10 Index
Citation
23
53
2,240
Rankings
Ranking Based On Selection: 1
High Energy Physics
Astroparticle Physics
Artificial Inteligence
Rankings
Ranking Based On Selection: 2
Nuclear Physics
Astrophysics
Artificial Intelligence
Electrodynamics
Rankings
Ranking Based On Selection: 3
V Bankova
Metrics
H-Index
i10 Index
Citation Counts
79
193
25,948
Rankings
Ranking Based On Selection: 4
физика и астрофизка на елементарните частици
Rankings
Ranking Based On Selection: 5
adsorption
catalysis
surface science
zeolites
titania
Rankings
Ranking Based On Selection: 6
Mathematical Modelling
Artificial Intelligence
Intuitionistic Fuzzy Sets
Generalized Nets
Number Theory Network Physiology
Rankings
Ranking Based On Selection: 7
Andrey Milchev
Metrics
H-Index
i10 Index
Citation Counts
54
193
9,720
statistical physics
soft condensed matter
computer modeling
Rankings
Ranking Based On Selection: 8
Milen I. Georgiev
Metrics
H-Index
i10 Index
Citation Counts
51
134
12,573
Molecular Biotechnology
Metabolomics
Natural Products
Molecular Pharmacology
Rankings
Ranking Based On Selection: 9
Dimo Kashchiev
Metrics
H-Index
i10 Index
Citation Counts
49
99
11,851
Nucleation and Growth of New Phases
Rankings
Ranking Based On Selection: 10
solid state chemistry
EPR spectroscopy
materials for energy storage
sodium/lithium ion batteries
intercalation chemistry

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Rankings
Ranking Based On Selection: 11
Nikolay K Vitanov
Metrics
H-Index
i10 Index
Citation Counts
47
103
5,806
nonlinear PDEs
nonlinear time series analysis
nonlinear fluid dynamics
social dynamics
mathematical economics
Rankings
Ranking Based On Selection: 12
Rankings
Ranking Based On Selection: 14
Biogenic volatile organic compounds
photosynthesis
Rankings
Ranking Based On Selection: 16
Ivan Krastev
Metrics
H-Index
i10 Index
Citation Counts
41
131
7,325
Rankings
Ranking Based On Selection: 17
Sonia Damyanova
Metrics
H-Index
i10 Index
Citation Counts
41
57
6,246
quimica
engenharia quimica
materias
energia
Rankings
Ranking Based On Selection: 18
Plant ecophysiology
Photosynthesis
Plant biology
Plant stress physiology
Rankings
Ranking Based On Selection: 19
Marin Gospodinov
Metrics
H-Index
i10 Index
Citation Counts
40
117
5,642
Rankings
Ranking Based On Selection: 20
Maxim Boyanov
Metrics
H-Index
i10 Index
Citation Counts
39
70
5,934
biogeochemistry
adsorption
redox
contaminant fate and transport
EXAFS
Rankings
Ranking Based On Selection: 21
Rankings
Ranking Based On Selection: 23
Snejana Moncheva
Metrics
H-Index
i10 Index
Citation Counts
39
82
4,321
Marine Phytoplankton
Blooms
Ecological Indicators
Ecosystem Health
Rankings
Ranking Based On Selection: 24
soliton theory
integrable systems
soliton interactions
Rankings
Ranking Based On Selection: 25
mathematical physics
soliton theory
soliton interactions
Rankings
Ranking Based On Selection: 27
ivan dimov
Metrics
H-Index
i10 Index
Citation Counts
36
115
4,636
Monte Carlo methods
Parallel algorithms
Mathematical modeling
Rankings
Ranking Based On Selection: 28
Alexander Karamanov
Metrics
H-Index
i10 Index
Citation Counts
36
55
3,421
glass-ceramics
ceramics
waste vitrification
Rankings
Ranking Based On Selection: 29
Tatyana Tabakova
Metrics
H-Index
i10 Index
Citation Counts
36
72
6,269
Rankings
Ranking Based On Selection: 30
Najdenski Hristo
Metrics
H-Index
i10 Index
Citation Counts
35
77
4,283
infectious microbiology
Rankings
Ranking Based On Selection: 31
Rankings
Ranking Based On Selection: 32
Dora Karagiozova
Metrics
H-Index
i10 Index
Citation Counts
35
67
4,144
Solid mechanics
Behaviour of inelastic structures subjected to blast and impact
Stress wave propagation
Mechanical properties
Rankings
Ranking Based On Selection: 35
Stephan Armyanov
Metrics
H-Index
i10 Index
Citation Counts
34
68
3,448
Rankings
Ranking Based On Selection: 36
Alexander G. Petrov
Metrics
H-Index
i10 Index
Citation Counts
34
82
3,586
Soft Matter Physics
Living Matter Physics
Liquid Crystals
Rankings
Ranking Based On Selection: 37
biomathematics
interval analysis
enzyme kinetics
mathematical modelling
Rankings
Ranking Based On Selection: 38
I Avramov
Metrics
H-Index
i10 Index
Citation Counts
33
82
3,728
viscosity
glass transition
kinetics of phase transformation
Rankings
Ranking Based On Selection: 40
Petko Denev
Metrics
H-Index
i10 Index
Citation Counts
32
66
4,480
phytochemistry
natural products
antioxidants
functional foods
Rankings
Ranking Based On Selection: 41
photosynthesis
abiotic stress
chlorophyll fluorescence
resurrection plants
Rankings
Ranking Based On Selection: 43
Theoretical and mathematical physics
Rankings
Ranking Based On Selection: 44
Vessela Tsakova
Metrics
H-Index
i10 Index
Citation Counts
32
63
2,932
electrochemical phase formation
conducting polymers
electroanalysis
Rankings
Ranking Based On Selection: 45
Rumiana Kotsilkova
Metrics
H-Index
i10 Index
Citation Counts
31
64
3,170
Rankings
Ranking Based On Selection: 46
Catalysis
photocatalysis
adsorption
surface science
IR spectroscopy
Rankings
Ranking Based On Selection: 47
SK Stefanov
Metrics
H-Index
i10 Index
Citation Counts
30
61
2,698
Monte Carlo methods
rarefied gas dynamics
microfluidics
physics of fluids
Rankings
Ranking Based On Selection: 48
Nadya Markova
Metrics
H-Index
i10 Index
Citation Counts
30
58
2,473
Rankings
Ranking Based On Selection: 49
Rankings
Ranking Based On Selection: 50
in silico drug design
molecular modelling
computational toxicology
Rankings
Ranking Based On Selection: 51
general theoretical and mathematical physics
group-theoretical methods
conformal field theory
supersymmetry
quantum groups
Rankings
Ranking Based On Selection: 52
Vasko Idakiev
Metrics
H-Index
i10 Index
Citation Counts
29
41
4,264
хетерогенен катализ
Rankings
Ranking Based On Selection: 53
general theoretical and mathematical physics
strings/branes
wormholes
dark energy & dark matter
supersymmetry
Rankings
Ranking Based On Selection: 54
Roumiana P. Stateva
Metrics
H-Index
i10 Index
Citation Counts
29
59
2,581
Chemical engineering
chemical engineering thermodynamics
Rankings
Ranking Based On Selection: 55
Georgi Tyuliev
Metrics
H-Index
i10 Index
Citation Counts
28
52
2,527
Rankings
Ranking Based On Selection: 58
general theoretical and mathematical physics
strings/branes with applications to black hole and wormhole physics and cosmology
non-perturbative aspects of quantum gauge theories
supersymmetry
Rankings
Ranking Based On Selection: 61
Zlatinka I Dimitrova
Metrics
H-Index
i10 Index
Citation Counts
27
42
2,416
nonlinear partial differential equations
mathematical modeling
complex systems
Rankings
Ranking Based On Selection: 62
Emilia Apostolova
Metrics
H-Index
i10 Index
Citation Counts
27
46
1,883
photosynthesis
thylakoid membranes
abiotic stress
oxygen evolution
biosensors
Rankings
Ranking Based On Selection: 63
Jana Tchekalarova
Metrics
H-Index
i10 Index
Citation Counts
27
72
2,259
Epilepsy Neuropharmacology EEG Angiotensin system Neurodegenerative disease
Rankings
Ranking Based On Selection: 64
Rankings
Ranking Based On Selection: 66
Vessela Krasteva
Metrics
H-Index
i10 Index
Citation Counts
27
45
2,091
biomedical engineering
signal processing
cardiac arrhythmia
defibrillation
biometrics
Rankings
Ranking Based On Selection: 68
Pavlina Dolashka
Metrics
H-Index
i10 Index
Citation Counts
27
74
2,382
Rankings
Ranking Based On Selection: 69
Margarita Apostolova
Metrics
H-Index
i10 Index
Citation Counts
27
45
2,087
Rankings
Ranking Based On Selection: 71
lipid chemistry
lipid analysis
analysis of bioactive natural compounds
Rankings
Ranking Based On Selection: 72
Ivan Markov
Metrics
H-Index
i10 Index
Citation Counts
27
48
3,906
nucleation
epitaxy
crystal growth
Rankings
Ranking Based On Selection: 74
environmental catalysis
Rankings
Ranking Based On Selection: 76
Meta-heuristic Algorithms
Artificial Intelligence
Modelling
Parameter Identification
Bioprocess Optimization and Control
Rankings
Ranking Based On Selection: 77
Ekaterina Batchvarova
Metrics
H-Index
i10 Index
Citation Counts
26
47
3,690
Boundary-layer meteorology
air pollution
exchange processes
urban-coastal-marine meteorology
energy meteorology
Rankings
Ranking Based On Selection: 79
Rankings
Ranking Based On Selection: 80
Peter IY Velinov
Metrics
H-Index
i10 Index
Citation Counts
26
76
2,356
Space physics
Solar-terrestrial physics
Cosmic rays
Solar energetic particles
Ionization in atmosphere
Rankings
Ranking Based On Selection: 81
Topology
Convex analysis
Optimization
Banach spaces
Rankings
Ranking Based On Selection: 82
Evgeni Ivanov
Metrics
H-Index
i10 Index
Citation Counts
25
42
1,915
His fields of research is related with polymer nanocomposites: rheological
structural
thermal
physical
mechanical properties
Rankings
Ranking Based On Selection: 83
Valya Vassileva
Metrics
H-Index
i10 Index
Citation Counts
25
39
3,281
Regulation of gene expression
DNA methylation
cell biology
Rankings
Ranking Based On Selection: 84
Rankings
Ranking Based On Selection: 85
Svilen Sabchevski
Metrics
H-Index
i10 Index
Citation Counts
25
52
2,089
Gyrotrons
Terahertz waves
Electron beams
Electron devices
Computational Electromagnetics
Rankings
Ranking Based On Selection: 86
computational chemistry
coordination chemistry
vibrational spectroscopy
Rankings
Ranking Based On Selection: 87
Christo Nanev
Metrics
H-Index
i10 Index
Citation Counts
25
56
1,915
Crystal growth
Crystal nucleation
Instability of polyhedral crystal shapes
Cloud Condensation Nuclei
Rankings
Ranking Based On Selection: 88
Tsonko Kolev
Metrics
H-Index
i10 Index
Citation Counts
25
82
2,786
Rankings
Ranking Based On Selection: 89
AG Dobrikova
Metrics
H-Index
i10 Index
Citation Counts
24
38
1,505
Rankings
Ranking Based On Selection: 90
corrosion
surface science
thin oxide films
catalysts and photocatalysts
Rankings
Ranking Based On Selection: 91
структурна кристалография
материалознание
Rankings
Ranking Based On Selection: 92
Maria Angelova
Metrics
H-Index
i10 Index
Citation Counts
24
43
1,992
Mycology
Oxidative stress: biomarkers
cell responce
antioxidant defence
Rankings
Ranking Based On Selection: 93
Anna Maria Szekeres
Metrics
H-Index
i10 Index
Citation Counts
24
63
2,215
Physics of thin films and semiconductor heterostructures
Rankings
Ranking Based On Selection: 94
Rankings
Ranking Based On Selection: 95
mechanism of organic reactions
evolution chemistry
tautomerism
Rankings
Ranking Based On Selection: 96
Vesselin Iliev
Metrics
H-Index
i10 Index
Citation Counts
24
29
2,419
Environmental catalysis
Photocatalysis
Waste water cleaning
Destruction of volatile organic compounds
Solar energy utilizati
Rankings
Ranking Based On Selection: 97
Diana Nesheva
Metrics
H-Index
i10 Index
Citation Counts
24
58
2,056
semiconductors
bulk materials and thin films
nanosized and nanostructured materials
Rankings
Ranking Based On Selection: 98
Vesselin Kussovski
Metrics
H-Index
i10 Index
Citation Counts
23
53
2,240
infectious microbiology
photodynamic therapy
antimicrobials