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" (943,645 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
Abdullah G Al Sehemi
Computational Chemistry
Organic Chemistry
Organic Synthesis
Heterocyclic Compounds
NLO
Metrics
H-Index
i10 Index
Citation
59
457
17,245
* Rankings
Ranking Based On Selection: 2
Mohamed S Hamdy
Physical Chemistry
Heterogeneous Catalysis
Materials Science
Metrics
H-Index
i10 Index
Citation
51
133
7,729
* Rankings
Ranking Based On Selection: 3
Shabbir Muhammad
Physical and Computational Chemistry
Nonlinear Optical Properties
Functional Material Designing
Metrics
H-Index
i10 Index
Citation
48
263
9,796
* Rankings
Ranking Based On Selection: 4
Sami Ullah
Intumescent Fire Retardant Coating
Metal Organic Frameworks (MOFs)
Adsorption
CO2 Capture
Metrics
H-Index
i10 Index
Citation
43
145
6,121
* Rankings
Ranking Based On Selection: 5
Abubakr M Idris
Professor of Analytical Chemistry - Expert in Academic Development & Accreditation in Higher Education
Metrics
H-Index
i10 Index
Citation
38
155
7,072
* Rankings
Ranking Based On Selection: 6
أ د يحيى مبخوتYahia Mabkhot
التشييد للمركبات العضوية وتطبيقاتها البيولوجية والطبية
Metrics
H-Index
i10 Index
Citation
38
129
5,827
* Rankings
Ranking Based On Selection: 7
Ismat Hassan
Kinetics
Corrosion
Environmental Chemistry
Electrochemistry
Metrics
H-Index
i10 Index
Citation
34
84
3,703
* Rankings
Ranking Based On Selection: 8
Riadh Marzouki
Crystallography
Materials Chemistry
Arsenates
Phosphates
Molybdates
Metrics
H-Index
i10 Index
Citation
30
79
3,339

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* Rankings
Ranking Based On Selection: 11
Tarek Othman Said
Environmental Analytical Chemistry
Environmental Science and Technology
Analytical Chemistry
Metrics
H-Index
i10 Index
Citation
26
51
1,865
* Rankings
Ranking Based On Selection: 14
Ahmed M Fouda
Synthesis of heterocyclic organic compounds and evaluation of their antitumor activity
Metrics
H-Index
i10 Index
Citation
25
48
1,706
* Rankings
Ranking Based On Selection: 15
M Mujahid Alam|M. Mujahid Alam
Organic Synthesis
Nanomaterials
Natural products
Dye-sensitized solar cells
Catalysis
Metrics
H-Index
i10 Index
Citation
23
49
2,083
* Rankings
Ranking Based On Selection: 16
Mudassir Hasan
Polymeric membrane separation
energy storage devices
nanocomposites
nanotechnology
Metrics
H-Index
i10 Index
Citation
22
37
1,307
* Rankings
Ranking Based On Selection: 17
Saifeldin M. Siddeeg
Inorganic Chemistry
Environmental Radiochemistry
Materials Characterisation and Applications
Metrics
H-Index
i10 Index
Citation
18
27
1,246
* Rankings
Ranking Based On Selection: 22
Abdullah Alhanash
Kinetics
Heterogeneous Catalysis
Solid Acid Catalysts
Materials
Metrics
H-Index
i10 Index
Citation
9
8
849
Naglaa Zidan
Analytical Chemistry - Environmental Chemistry
Metrics
H-Index
i10 Index
Citation
3
3
618
Rankings
Ranking Based On Selection: 1
Abdullah G Al Sehemi
Metrics
H-Index
i10 Index
Citation Counts
59
457
17,245
Computational Chemistry
Organic Chemistry
Organic Synthesis
Heterocyclic Compounds
NLO
Rankings
Ranking Based On Selection: 2
Mohamed S Hamdy
Metrics
H-Index
i10 Index
Citation Counts
51
133
7,729
Physical Chemistry
Heterogeneous Catalysis
Materials Science
Rankings
Ranking Based On Selection: 3
Shabbir Muhammad
Metrics
H-Index
i10 Index
Citation Counts
48
263
9,796
Physical and Computational Chemistry
Nonlinear Optical Properties
Functional Material Designing
Rankings
Ranking Based On Selection: 4
Sami Ullah
Metrics
H-Index
i10 Index
Citation Counts
43
145
6,121
Intumescent Fire Retardant Coating
Metal Organic Frameworks (MOFs)
Adsorption
CO2 Capture
Rankings
Ranking Based On Selection: 5
Abubakr M Idris
Metrics
H-Index
i10 Index
Citation Counts
38
155
7,072
Professor of Analytical Chemistry - Expert in Academic Development & Accreditation in Higher Education
Rankings
Ranking Based On Selection: 6
أ د يحيى مبخوتYahia Mabkhot
Metrics
H-Index
i10 Index
Citation Counts
38
129
5,827
التشييد للمركبات العضوية وتطبيقاتها البيولوجية والطبية
Rankings
Ranking Based On Selection: 7
Ismat Hassan
Metrics
H-Index
i10 Index
Citation Counts
34
84
3,703
Kinetics
Corrosion
Environmental Chemistry
Electrochemistry
Rankings
Ranking Based On Selection: 8
Riadh Marzouki
Metrics
H-Index
i10 Index
Citation Counts
30
79
3,339
Crystallography
Materials Chemistry
Arsenates
Phosphates
Molybdates
Rankings
Ranking Based On Selection: 9
Gamil Al Hazmi
Metrics
H-Index
i10 Index
Citation Counts
29
52
2,293
Rankings
Ranking Based On Selection: 10
Mongi Amami
Metrics
H-Index
i10 Index
Citation Counts
27
74
2,238

360° Institutional Performance & Benchmarking Click Here for Live Demo 

Through advanced, institution-specific analytics and benchmarking, gain data-driven strategic insights into your academic performance, global standing, and competitive strengths. Compare your institution with 20 similarly ranked institutions at city, country, regional, and global levels, as well as with those in similar standings across 13 subjects, to uncover your institution’s strengths. More Info

Rankings
Ranking Based On Selection: 11
Tarek Othman Said
Metrics
H-Index
i10 Index
Citation Counts
26
51
1,865
Environmental Analytical Chemistry
Environmental Science and Technology
Analytical Chemistry
Rankings
Ranking Based On Selection: 12
Adel A El Zahhar
Metrics
H-Index
i10 Index
Citation Counts
25
54
1,963
Rankings
Ranking Based On Selection: 13
Hisham ABD Rabboh
Metrics
H-Index
i10 Index
Citation Counts
25
55
1,981
Rankings
Ranking Based On Selection: 14
Ahmed M Fouda
Metrics
H-Index
i10 Index
Citation Counts
25
48
1,706
Synthesis of heterocyclic organic compounds and evaluation of their antitumor activity
Rankings
Ranking Based On Selection: 15
M Mujahid Alam|M. Mujahid Alam
Metrics
H-Index
i10 Index
Citation Counts
23
49
2,083
Organic Synthesis
Nanomaterials
Natural products
Dye-sensitized solar cells
Catalysis
Rankings
Ranking Based On Selection: 16
Mudassir Hasan
Metrics
H-Index
i10 Index
Citation Counts
22
37
1,307
Polymeric membrane separation
energy storage devices
nanocomposites
nanotechnology
Rankings
Ranking Based On Selection: 17
Saifeldin M. Siddeeg
Metrics
H-Index
i10 Index
Citation Counts
18
27
1,246
Inorganic Chemistry
Environmental Radiochemistry
Materials Characterisation and Applications
Rankings
Ranking Based On Selection: 18
Ayed Alshihri
Metrics
H-Index
i10 Index
Citation Counts
17
26
966
Rankings
Ranking Based On Selection: 20
Radhouane Bel Hadj Tahar
Metrics
H-Index
i10 Index
Citation Counts
16
19
2,355
Rankings
Ranking Based On Selection: 21
Ameni Brahmia
Metrics
H-Index
i10 Index
Citation Counts
11
12
325
Rankings
Ranking Based On Selection: 22
Abdullah Alhanash
Metrics
H-Index
i10 Index
Citation Counts
9
8
849
Kinetics
Heterogeneous Catalysis
Solid Acid Catalysts
Materials
Rankings
Ranking Based On Selection: 23
Ahmed El-Marsy
Metrics
H-Index
i10 Index
Citation Counts
8
6
298
Rankings
Ranking Based On Selection: 24
Naglaa Zidan
Metrics
H-Index
i10 Index
Citation Counts
3
3
618
Analytical Chemistry - Environmental Chemistry
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