Citation Rankings
Highly Cited Researchers
Highly Cited Researchers 751 Scientists Citation Rankings - 2025
Discover the world’s highly cited researchers through the AD Scientific Index 2025 Citation Rankings.
These rankings evaluate scientists based on their total and recent citation counts, capturing the breadth and real-time currency of academic recognition. Citation data reveals how widely a scholar’s work is referenced, applied, and extended across diverse disciplines. The rankings are routinely updated to reflect ongoing citation growth, while eliminating distortions from excessive co-authorship and institutional inflation. Premium tools provide access to detailed citation dynamics, unethical citation behavior detection, and field-normalized benchmarking.
* Total Citation Counts Rankings
Ranking Based On Selection: 1
Natural science/Physic
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,095
11,323
0.626
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* Total Citation Counts Rankings
Ranking Based On Selection: 2
Pharmacognosy
isolation and identification of biologically active leads from natural sources
microbial metabolism and semisy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,152
11,000
0.681
* Total Citation Counts Rankings
Ranking Based On Selection: 3
Histology
cell biology
histochemistry
immunohistochemistry
embryolog
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,769
5,572
0.473
* Total Citation Counts Rankings
Ranking Based On Selection: 4
hyperspectral imaging
Imaging spectroscop
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,551
3,943
0.413
* Total Citation Counts Rankings
Ranking Based On Selection: 5
Environmental toxicology
risk assessment
life cycle analysis
persistent organic pollutants
integrated ecosystem assessmen
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,687
3,820
0.497
* Total Citation Counts Rankings
Ranking Based On Selection: 6
Medical Microbiology
Bacteriology
Immunology
Mycolog
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,814
6,622
0.972
* Total Citation Counts Rankings
Ranking Based On Selection: 7
clinical biochemistry
non-communicable diseases
natural products
drug discover
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,594
6,097
0.925
* Total Citation Counts Rankings
Ranking Based On Selection: 8
Abiotic Stress Physiolog
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,570
6,338
0.965
* Total Citation Counts Rankings
Ranking Based On Selection: 9
Urolog
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,616
1,176
0.255
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* Total Citation Counts Rankings
Ranking Based On Selection: 10
Agricultural stres
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,612
3,224
0.699
* Total Citation Counts Rankings
Ranking Based On Selection: 11
Microbiology
Immunology
Proteomics
Bioinformatics
Genomic
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,528
3,694
0.816
* Total Citation Counts Rankings
Ranking Based On Selection: 12
Biomaterials
Nanomaterials
electrocatalysi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,340
2,259
0.521
* Total Citation Counts Rankings
Ranking Based On Selection: 13
neurosurgery
Medical educatio
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,040
1,357
0.336
* Total Citation Counts Rankings
Ranking Based On Selection: 14
Numerical Analysis
Computational Fluid Dynamic
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,977
1,165
0.293
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Pharmaceutic
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,923
2,792
0.712
* Total Citation Counts Rankings
Ranking Based On Selection: 16
Water Quality
Soil Amendments
Magnetized Water
Soil Propertie
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,821
2,424
0.634
* Total Citation Counts Rankings
Ranking Based On Selection: 17
Fuel Cells and Batteries
Advanced Energy materials
Renewable Energy
Energy Storage
Wate
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,692
3,251
0.881
* Total Citation Counts Rankings
Ranking Based On Selection: 18
Medical education
Hypertension
Endothelium-derived Factor
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,541
976
0.276
* Total Citation Counts Rankings
Ranking Based On Selection: 19
Biochar
Composting
Carbon Sequestration
Climate Change Mitigation
Plant and Soil Ecosyste
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,475
2,522
0.726
* Total Citation Counts Rankings
Ranking Based On Selection: 20
Molecular Biology
Non-coding RNA
bioinformatic
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,363
2,906
0.864
* Total Citation Counts Rankings
Ranking Based On Selection: 21
Mechanical Engineerin
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,223
2,798
0.868
* Total Citation Counts Rankings
Ranking Based On Selection: 22
Pharmaclogy and Toxicolog
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,146
1,812
0.576
* Total Citation Counts Rankings
Ranking Based On Selection: 23
Mycosystematis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,075
2,652
0.862
* Total Citation Counts Rankings
Ranking Based On Selection: 24
pharmaceutical science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,891
1,374
0.475
* Total Citation Counts Rankings
Ranking Based On Selection: 25
Animal Health
Environmental stressors
Environmental pollution
Performance and Immunit
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,736
1,785
0.652
* Total Citation Counts Rankings
Rankings
49,878
57
1
Ranking Based On Selection: 1
Waleed E. Mahmoud
Suez Canal University
Ismailia, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,095
11,323
0.626
* Total Citation Counts Rankings
Rankings
58,030
69
2
Ranking Based On Selection: 2
Safwat A Ahmed
Suez Canal University
Ismailia, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,152
11,000
0.681
Pharmacognosy
isolation and identification of biologically active leads from natural sources
microbial metabolism and semisy
* Total Citation Counts Rankings
Rankings
86,761
119
3
Ranking Based On Selection: 3
Abd El-Hamid Osman
Suez Canal University
Ismailia, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,769
5,572
0.473
Histology
cell biology
histochemistry
immunohistochemistry
embryolog
* Total Citation Counts Rankings
Rankings
110,683
163
4
Ranking Based On Selection: 4
Gamal Elmasry
Suez Canal University
Ismailia, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,551
3,943
0.413
hyperspectral imaging
Imaging spectroscop
* Total Citation Counts Rankings
Rankings
140,848
236
5
Ranking Based On Selection: 5
Mohamed Tawfic Ahmed
Suez Canal University
Ismailia, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,687
3,820
0.497
Environmental toxicology
risk assessment
life cycle analysis
persistent organic pollutants
integrated ecosystem assessmen
* Total Citation Counts Rankings
Rankings
159,860
276
6
Ranking Based On Selection: 6
Abdelazeem Mohamed Algammal
Suez Canal University
Ismailia, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,814
6,622
0.972
Medical Microbiology
Bacteriology
Immunology
Mycolog
* Total Citation Counts Rankings
Rankings
165,440
291
7
Ranking Based On Selection: 7
Amin Ibrahim
Suez Canal University
Ismailia, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,594
6,097
0.925
clinical biochemistry
non-communicable diseases
natural products
drug discover
* Total Citation Counts Rankings
Rankings
166,048
295
8
Ranking Based On Selection: 8
Amr el Kelish
Suez Canal University
Ismailia, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,570
6,338
0.965
* Total Citation Counts Rankings
Rankings
234,616
503
9
Ranking Based On Selection: 9
Ahmed El Sakka
Suez Canal University
Ismailia, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,616
1,176
0.255
* Total Citation Counts Rankings
Rankings
234,782
504
10
Ranking Based On Selection: 10
Salah El-Hendawy
Suez Canal University
Ismailia, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,612
3,224
0.699
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* Total Citation Counts Rankings
Rankings
238,808
518
11
Ranking Based On Selection: 11
Shymaa Enany
Suez Canal University
Ismailia, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,528
3,694
0.816
Microbiology
Immunology
Proteomics
Bioinformatics
Genomic
* Total Citation Counts Rankings
Rankings
248,315
546
12
Ranking Based On Selection: 12
Nasser Y. Mostafa
Suez Canal University
Ismailia, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,340
2,259
0.521
Biomaterials
Nanomaterials
electrocatalysi
* Total Citation Counts Rankings
Rankings
265,227
621
13
Ranking Based On Selection: 13
Khalil Nabil H
Suez Canal University
Ismailia, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,040
1,357
0.336
neurosurgery
Medical educatio
* Total Citation Counts Rankings
Rankings
268,873
636
14
Ranking Based On Selection: 14
AA Soliman
Suez Canal University
Ismailia, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,977
1,165
0.293
Numerical Analysis
Computational Fluid Dynamic
* Total Citation Counts Rankings
Rankings
272,052
645
15
Ranking Based On Selection: 15
El Sayed Khafagy
Suez Canal University
Ismailia, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,923
2,792
0.712
* Total Citation Counts Rankings
Rankings
278,310
669
16
Ranking Based On Selection: 16
Ahmed Ibrahim Mohamed Ahmed
Suez Canal University
Ismailia, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,821
2,424
0.634
Water Quality
Soil Amendments
Magnetized Water
Soil Propertie
* Total Citation Counts Rankings
Rankings
286,719
697
17
Ranking Based On Selection: 17
Abdalla M Abdalla
Suez Canal University
Ismailia, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,692
3,251
0.881
Fuel Cells and Batteries
Advanced Energy materials
Renewable Energy
Energy Storage
Wate
* Total Citation Counts Rankings
Rankings
297,134
732
18
Ranking Based On Selection: 18
Salah Eldin Kassab
Suez Canal University
Ismailia, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,541
976
0.276
Medical education
Hypertension
Endothelium-derived Factor
* Total Citation Counts Rankings
Rankings
301,965
757
19
Ranking Based On Selection: 19
Yasser Mahmoud Awad
Suez Canal University
Ismailia, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,475
2,522
0.726
Biochar
Composting
Carbon Sequestration
Climate Change Mitigation
Plant and Soil Ecosyste
* Total Citation Counts Rankings
Rankings
310,403
797
20
Ranking Based On Selection: 20
Manal Said Fawzy
Suez Canal University
Ismailia, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,363
2,906
0.864
Molecular Biology
Non-coding RNA
bioinformatic
* Total Citation Counts Rankings
Rankings
321,633
859
21
Ranking Based On Selection: 21
Ahmed Salah Eldin
Suez Canal University
Ismailia, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,223
2,798
0.868
Mechanical Engineerin
* Total Citation Counts Rankings
Rankings
328,163
890
22
Ranking Based On Selection: 22
Yasser MA Moustafa
Suez Canal University
Ismailia, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,146
1,812
0.576
Pharmaclogy and Toxicolog
* Total Citation Counts Rankings
Rankings
334,360
928
23
Ranking Based On Selection: 23
Ahmed M Abdel Azeem
Suez Canal University
Ismailia, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,075
2,652
0.862
* Total Citation Counts Rankings
Rankings
351,579
1,006
24
Ranking Based On Selection: 24
Mamdouh Mostafa Ghorab
Suez Canal University
Ismailia, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,891
1,374
0.475
pharmaceutical science
* Total Citation Counts Rankings
Rankings
367,370
1,063
25
Ranking Based On Selection: 25
Ahmed Hassan 1
Suez Canal University
Ismailia, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,736
1,785
0.652
Animal Health
Environmental stressors
Environmental pollution
Performance and Immunit