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" (870,053 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
Ahmed F. Al-Hossainy
Polymer and Inorganic Semiconductor Nanostructure thin film
Metrics
H-Index
i10 Index
Citation
43
107
3,958
* Rankings
Ranking Based On Selection: 2
Sedky HA Hassan
Environmental Microbiology
Bioenergy and Microbial fuel cells
Bioremediation
Applied Mycology
Metrics
H-Index
i10 Index
Citation
33
57
4,009
* Rankings
Ranking Based On Selection: 4
Romany F. Mansour
Computer Science
IOT
Healthcare
Biomedical
Metrics
H-Index
i10 Index
Citation
27
65
2,812
* Rankings
Ranking Based On Selection: 7
Dalal Husein
Nanomaterials
Synthesis & Characterization
DFT calculations
Adsorption
Photocatalytic Degradation N
Metrics
H-Index
i10 Index
Citation
20
33
1,367
* Rankings
Ranking Based On Selection: 8
Mostafa Afifi Hassan
MOCVD growth and Nanofabrication
PEC water splitting
Solar energy conversion
Metrics
H-Index
i10 Index
Citation
19
31
1,456
* Rankings
Ranking Based On Selection: 9
Samia Makram
Kinetics
Oxidation
Mechanisms
Nano-Composite
Nanomaterials
Metrics
H-Index
i10 Index
Citation
19
37
1,017
* Rankings
Ranking Based On Selection: 10
Ahmed Abdelhafez
Soil Chemistry (heavy metals)
Risk Assessment (heavy metals)
Biochar
Metrics
H-Index
i10 Index
Citation
19
32
1,688

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* Rankings
Ranking Based On Selection: 11
Ahmed Th. A. Ibrahim
Toxicology
Fish biology
Heavy metals
Water pollution
Metrics
H-Index
i10 Index
Citation
18
19
978
* Rankings
Ranking Based On Selection: 13
Emad E. El-Katori
Surface Chemistry
Nanotechnology
Energy
Corrosion Chemistry
Electrochemistry
Metrics
H-Index
i10 Index
Citation
15
20
1,382
* Rankings
Ranking Based On Selection: 16
Mahdy H. Hamed
Soil fertility
plant nutrition
organic fertilizers
organic farming
organic compost production
Metrics
H-Index
i10 Index
Citation
10
10
252
* Rankings
Ranking Based On Selection: 17
Kam Ibrahim|KAM Ibrahim
Crops breeding - Crop Production
Metrics
H-Index
i10 Index
Citation
8
6
238
* Rankings
Ranking Based On Selection: 19
Khaled Hussein Arafat|Arafat, K.H., Arafat, K.
Date Palm Diseases
Biological Control
Soil-borne fungi
Forecasting Models
Metrics
H-Index
i10 Index
Citation
6
5
141
* Rankings
Ranking Based On Selection: 24
D Nermeen Nasralla
علوم وتكنولوجيا الالبان
Metrics
H-Index
i10 Index
Citation
2
2
33
* Rankings
Ranking Based On Selection: 28
Esraa Ahmed Hussein
امراض النبات- امراض نخيل البلح
Metrics
H-Index
i10 Index
Citation
2
0
10
Rankings
Ranking Based On Selection: 1
Ahmed F. Al-Hossainy
Metrics
H-Index
i10 Index
Citation Counts
43
107
3,958
Polymer and Inorganic Semiconductor Nanostructure thin film
Rankings
Ranking Based On Selection: 2
Sedky HA Hassan
Metrics
H-Index
i10 Index
Citation Counts
33
57
4,009
Environmental Microbiology
Bioenergy and Microbial fuel cells
Bioremediation
Applied Mycology
Rankings
Ranking Based On Selection: 3
Samer S. Ezz-Eldien
Metrics
H-Index
i10 Index
Citation Counts
30
39
3,285
Rankings
Ranking Based On Selection: 4
Romany F. Mansour
Metrics
H-Index
i10 Index
Citation Counts
27
65
2,812
Rankings
Ranking Based On Selection: 5
Serry Alsharife
Metrics
H-Index
i10 Index
Citation Counts
25
60
1,899
Rankings
Ranking Based On Selection: 7
Dalal Husein
Metrics
H-Index
i10 Index
Citation Counts
20
33
1,367
Nanomaterials
Synthesis & Characterization
DFT calculations
Adsorption
Photocatalytic Degradation N
Rankings
Ranking Based On Selection: 8
Mostafa Afifi Hassan
Metrics
H-Index
i10 Index
Citation Counts
19
31
1,456
MOCVD growth and Nanofabrication
PEC water splitting
Solar energy conversion
Rankings
Ranking Based On Selection: 9
Samia Makram
Metrics
H-Index
i10 Index
Citation Counts
19
37
1,017
Kinetics
Oxidation
Mechanisms
Nano-Composite
Nanomaterials
Rankings
Ranking Based On Selection: 10
Ahmed Abdelhafez
Metrics
H-Index
i10 Index
Citation Counts
19
32
1,688
Soil Chemistry (heavy metals)
Risk Assessment (heavy metals)
Biochar

Enroll all your faculty members with discounted institutional membership to showcase your institution's academic strength to the world in the best way possible – join now and achieve results fast! 

Rankings
Ranking Based On Selection: 11
Ahmed Th. A. Ibrahim
Metrics
H-Index
i10 Index
Citation Counts
18
19
978
Toxicology
Fish biology
Heavy metals
Water pollution
Rankings
Ranking Based On Selection: 12
Mahmoud Mohamed Ahmed
Metrics
H-Index
i10 Index
Citation Counts
17
22
718
Rankings
Ranking Based On Selection: 13
Emad E. El-Katori
Metrics
H-Index
i10 Index
Citation Counts
15
20
1,382
Surface Chemistry
Nanotechnology
Energy
Corrosion Chemistry
Electrochemistry
Rankings
Ranking Based On Selection: 14
Waleed Senosy
Metrics
H-Index
i10 Index
Citation Counts
15
20
548
Rankings
Ranking Based On Selection: 15
Hatem A. Hamdon
Metrics
H-Index
i10 Index
Citation Counts
14
17
539
Rankings
Ranking Based On Selection: 16
Mahdy H. Hamed
Metrics
H-Index
i10 Index
Citation Counts
10
10
252
Soil fertility
plant nutrition
organic fertilizers
organic farming
organic compost production
Rankings
Ranking Based On Selection: 17
Kam Ibrahim|KAM Ibrahim
Metrics
H-Index
i10 Index
Citation Counts
8
6
238
Crops breeding - Crop Production
Rankings
Ranking Based On Selection: 18
محمد أحمد محمد علي
Metrics
H-Index
i10 Index
Citation Counts
7
5
167
Rankings
Ranking Based On Selection: 19
Khaled Hussein Arafat|Arafat, K.H., Arafat, K.
Metrics
H-Index
i10 Index
Citation Counts
6
5
141
Date Palm Diseases
Biological Control
Soil-borne fungi
Forecasting Models
Rankings
Ranking Based On Selection: 20
Eman Fm Tolba
Metrics
H-Index
i10 Index
Citation Counts
6
0
58
Rankings
Ranking Based On Selection: 21
Hesham A Ismail
Metrics
H-Index
i10 Index
Citation Counts
5
3
131
Rankings
Ranking Based On Selection: 23
ِAhmed Soliman|Soliman A. S. H, Ahmed Soliman, Soliman A
Metrics
H-Index
i10 Index
Citation Counts
3
1
30
Rankings
Ranking Based On Selection: 24
D Nermeen Nasralla
Metrics
H-Index
i10 Index
Citation Counts
2
2
33
علوم وتكنولوجيا الالبان
Rankings
Ranking Based On Selection: 25
Khaled Mohammed Khames Ahmed
Metrics
H-Index
i10 Index
Citation Counts
2
1
14
Rankings
Ranking Based On Selection: 26
Mohammed Kamal
Metrics
H-Index
i10 Index
Citation Counts
2
0
12
Rankings
Ranking Based On Selection: 27
Ali Khalifa
Metrics
H-Index
i10 Index
Citation Counts
2
0
11
Rankings
Ranking Based On Selection: 28
Esraa Ahmed Hussein
Metrics
H-Index
i10 Index
Citation Counts
2
0
10
امراض النبات- امراض نخيل البلح
Rankings
Ranking Based On Selection: 29
Ahmed Mahmoud Ali
Metrics
H-Index
i10 Index
Citation Counts
2
0
5
Rankings
Ranking Based On Selection: 30
Gamal Hassan Kamel
Metrics
H-Index
i10 Index
Citation Counts
1
1
25
Rankings
Ranking Based On Selection: 31
Shereen Reda
Metrics
H-Index
i10 Index
Citation Counts
1
1
14
Rankings
Ranking Based On Selection: 32
Mahmoud Shaaban Kamal Eldeen
Metrics
H-Index
i10 Index
Citation Counts
1
0
6
Rankings
Ranking Based On Selection: 33
Mohamed Solma
Metrics
H-Index
i10 Index
Citation Counts
1
0
5
Rankings
Ranking Based On Selection: 34
Amira Farag
Metrics
H-Index
i10 Index
Citation Counts
1
0
4
Rankings
Ranking Based On Selection: 35
Samar Ha Hammam
Metrics
H-Index
i10 Index
Citation Counts
1
0
1
Rankings
Ranking Based On Selection: 36
Taha Amr Abd El Aziz
Metrics
H-Index
i10 Index
Citation Counts
1
0
1