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
Mahmoud Nasr
Environmental Engineering
Wastewater Treatment
Environmental Modeling
Pollution
Waste Management
Metrics
H-Index
i10 Index
Citation
38
99
4,521
* Rankings
Ranking Based On Selection: 2
Hassan Shokry
Sensors Applications
Environmental Science
air Pollution Control
Materials Science
Semiconductor
Metrics
H-Index
i10 Index
Citation
38
77
3,536
* Rankings
Ranking Based On Selection: 3
Sherif Ismail
Environmental Engineering
Microbiology
Wastewater treatment
Anammox process
Biogas production
Metrics
H-Index
i10 Index
Citation
19
25
923
* Rankings
Ranking Based On Selection: 5
Amal Abdelhaleem
Wastewater treatment
Sustainability
Advanced Oxidation Processes
Waste Management
Waste to
Metrics
H-Index
i10 Index
Citation
14
18
907
Derrick Dadebo
Environmental Engineering
LCA
Sustainability
Waste Valorization
Water Supply Engineering
Metrics
H-Index
i10 Index
Citation
6
5
143
Naira Meky
Wastewater Treatment
Environmental Engineering
Constructed Wetland
Dark and photo fermentation
Metrics
H-Index
i10 Index
Citation
6
3
144
Norbert Onen Rubangakene
Environmental Engineering
Chemical Engineering
Nanotechnology
Biosystems and Agricultural Engineering
Metrics
H-Index
i10 Index
Citation
4
3
114

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! 

Tahani Ahmed Elbondira
Sustainable Urban Design - Sustainable Development - Environmental Engineering - Urban Green Spaces
Metrics
H-Index
i10 Index
Citation
2
1
17
Rankings
Ranking Based On Selection: 1
Mahmoud Nasr
Metrics
H-Index
i10 Index
Citation Counts
38
99
4,521
Environmental Engineering
Wastewater Treatment
Environmental Modeling
Pollution
Waste Management
Rankings
Ranking Based On Selection: 2
Hassan Shokry
Metrics
H-Index
i10 Index
Citation Counts
38
77
3,536
Sensors Applications
Environmental Science
air Pollution Control
Materials Science
Semiconductor
Rankings
Ranking Based On Selection: 3
Sherif Ismail
Metrics
H-Index
i10 Index
Citation Counts
19
25
923
Environmental Engineering
Microbiology
Wastewater treatment
Anammox process
Biogas production
Rankings
Ranking Based On Selection: 4
Naglaa F Soliman
Metrics
H-Index
i10 Index
Citation Counts
18
24
1,158
Rankings
Ranking Based On Selection: 5
Amal Abdelhaleem
Metrics
H-Index
i10 Index
Citation Counts
14
18
907
Wastewater treatment
Sustainability
Advanced Oxidation Processes
Waste Management
Waste to
Rankings
Ranking Based On Selection: 6
Mahmoud Sharaan
Metrics
H-Index
i10 Index
Citation Counts
10
10
218
Rankings
Ranking Based On Selection: 7
Derrick Dadebo
Metrics
H-Index
i10 Index
Citation Counts
6
5
143
Environmental Engineering
LCA
Sustainability
Waste Valorization
Water Supply Engineering
Rankings
Ranking Based On Selection: 8
Naira Meky
Metrics
H-Index
i10 Index
Citation Counts
6
3
144
Wastewater Treatment
Environmental Engineering
Constructed Wetland
Dark and photo fermentation
Rankings
Ranking Based On Selection: 9
Norbert Onen Rubangakene
Metrics
H-Index
i10 Index
Citation Counts
4
3
114
Environmental Engineering
Chemical Engineering
Nanotechnology
Biosystems and Agricultural Engineering
Rankings
Ranking Based On Selection: 10
Sara Atwa
Metrics
H-Index
i10 Index
Citation Counts
3
3
144

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
Rania Osama
Metrics
H-Index
i10 Index
Citation Counts
3
3
73
Rankings
Ranking Based On Selection: 12
Yasmen Heiba
Metrics
H-Index
i10 Index
Citation Counts
2
2
26
Rankings
Ranking Based On Selection: 14
Tahani Ahmed Elbondira
Metrics
H-Index
i10 Index
Citation Counts
2
1
17
Sustainable Urban Design - Sustainable Development - Environmental Engineering - Urban Green Spaces