Citation Rankings
Highly Cited Researchers
Highly Cited Researchers 2.772 Scientists Citation Rankings (Sort by last 6 years Citation Index) - 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.
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 1
Public Health
Global health
Disease modelling
Climate Changes and disease dynamic
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
136,849
124,668
0.911
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* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 2
High risk pregnancy
Assisted Reproductive Techniques
Evidence Based Health Car
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
68,302
59,630
0.873
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 3
Particle Physics
High Energy Physics
Nuclear Physics
CMS
CER
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
61,938
29,099
0.470
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 4
Computational Physics and Computer Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
114,439
28,480
0.249
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 5
Community
Environmental and Occupational Medicin
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
51,741
26,692
0.516
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 6
Public Health
Epidemiology
Non-Communicable Diseases
Hepatitis C
Tobacco Contro
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
34,827
26,611
0.764
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 7
Cyber Security for Cyber Physical Systems
Information Systems Security
Industrial Informatic
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
24,683
24,274
0.983
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 8
Chemistry
Scienc
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
46,056
19,566
0.425
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 9
Nanoscience & Nanotechnology
Supercapacitors
Catalysis
Nanocomposites
Shielding material
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,945
13,164
0.777
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* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 10
analytical chemistr
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,788
9,245
0.671
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 11
Critical Nursing Departmen
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,694
8,431
0.870
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 12
Medical Biochemistry and Molecular Biolog
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,385
6,947
0.400
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 13
Pediatric Allergy and Immunolog
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,654
6,824
0.387
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 14
Oncology/Neuropharmacology
Autophagy
Epigenetics
Drug discovery
Bioinformatic
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,286
6,793
0.444
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 15
catalysis
photocatalysis
nanomaterials
green chemistr
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,468
6,428
0.679
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 16
clinical pharmacy
pharmacy practice
hospital pharmac
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,201
6,224
0.676
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 17
Soil quality
Biochar
Environmental Soil Science
Soil fertilit
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,333
5,127
0.961
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 18
Phytochemistry
hepatoprotective effects of natural products
Pharmacognosy
Phytotherap
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,490
5,081
0.678
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 19
Myth
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
30,738
4,943
0.161
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 20
Diagnosis of Disease
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,926
4,802
0.810
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 21
Artificial Intelligence
Data Mining
Data base
software engineering
image processin
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,426
4,709
0.733
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 22
Optical properties of thin films
Physical properties of semiconductors (thin films and crystals
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,475
4,676
0.446
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 23
Pharmaceutical Biochem. Molecular Oncology Epigenetics Precision Drug repurposing Exosomes In silic
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,329
4,405
0.827
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 24
Solar energy and Nanotechnolog
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,074
4,111
0.371
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 25
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,234
4,100
0.783
* Last 6 Years Citation Counts Rankings
Rankings
316
2
1
Ranking Based On Selection: 1
Abdallah Samy
Ain Shams University
Cairo, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
136,849
124,668
0.911
Public Health
Global health
Disease modelling
Climate Changes and disease dynamic
* Last 6 Years Citation Counts Rankings
Rankings
2,190
8
2
Ranking Based On Selection: 2
Ashraf Nabhan
Ain Shams University
Cairo, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
68,302
59,630
0.873
High risk pregnancy
Assisted Reproductive Techniques
Evidence Based Health Car
* Last 6 Years Citation Counts Rankings
Rankings
6,935
24
3
Ranking Based On Selection: 3
Shimaa AbuZeid
Ain Shams University
Cairo, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
61,938
29,099
0.470
Particle Physics
High Energy Physics
Nuclear Physics
CMS
CER
* Last 6 Years Citation Counts Rankings
Rankings
7,161
25
4
Ranking Based On Selection: 4
Amr Radi
Ain Shams University
Cairo, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
114,439
28,480
0.249
Computational Physics and Computer Science
* Last 6 Years Citation Counts Rankings
Rankings
7,976
28
5
Ranking Based On Selection: 5
Mostafa Kamaleldin Mohamed
Ain Shams University
Cairo, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
51,741
26,692
0.516
Community
Environmental and Occupational Medicin
* Last 6 Years Citation Counts Rankings
Rankings
8,024
29
6
Ranking Based On Selection: 6
Aya Mostafa
Ain Shams University
Cairo, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
34,827
26,611
0.764
Public Health
Epidemiology
Non-Communicable Diseases
Hepatitis C
Tobacco Contro
* Last 6 Years Citation Counts Rankings
Rankings
9,284
32
7
Ranking Based On Selection: 7
Ali Shalash
Ain Shams University
Cairo, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
24,683
24,274
0.983
Cyber Security for Cyber Physical Systems
Information Systems Security
Industrial Informatic
* Last 6 Years Citation Counts Rankings
Rankings
12,901
39
8
Ranking Based On Selection: 8
Israa Kamal
Ain Shams University
Cairo, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
46,056
19,566
0.425
* Last 6 Years Citation Counts Rankings
Rankings
23,463
53
9
Ranking Based On Selection: 9
IS Yahia
Ain Shams University
Cairo, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,945
13,164
0.777
Nanoscience & Nanotechnology
Supercapacitors
Catalysis
Nanocomposites
Shielding material
* Last 6 Years Citation Counts Rankings
Rankings
39,648
91
10
Ranking Based On Selection: 10
Mona A Ahmed
Ain Shams University
Cairo, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,788
9,245
0.671
Smart Institutional Plan
Powerful Insights + Smart Membership = Institutional Success
Unlock 360° Real-Time Institutional Analysis to identify your institution’s strengths and areas for improvement.
* Last 6 Years Citation Counts Rankings
Rankings
45,272
108
11
Ranking Based On Selection: 11
Ahmed Elsayed
Ain Shams University
Cairo, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,694
8,431
0.870
Critical Nursing Departmen
* Last 6 Years Citation Counts Rankings
Rankings
59,464
141
12
Ranking Based On Selection: 12
Sanaa Eissa
Ain Shams University
Cairo, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,385
6,947
0.400
Medical Biochemistry and Molecular Biolog
* Last 6 Years Citation Counts Rankings
Rankings
60,946
143
13
Ranking Based On Selection: 13
Yehia El Gamal
Ain Shams University
Cairo, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,654
6,824
0.387
Pediatric Allergy and Immunolog
* Last 6 Years Citation Counts Rankings
Rankings
61,349
145
14
Ranking Based On Selection: 14
Amal Kamal Abdel Aziz|Amal Kamal Saadeldin
Ain Shams University
Cairo, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,286
6,793
0.444
Oncology/Neuropharmacology
Autophagy
Epigenetics
Drug discovery
Bioinformatic
* Last 6 Years Citation Counts Rankings
Rankings
66,108
155
15
Ranking Based On Selection: 15
MM Ibrahim
Ain Shams University
Cairo, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,468
6,428
0.679
catalysis
photocatalysis
nanomaterials
green chemistr
* Last 6 Years Citation Counts Rankings
Rankings
69,112
162
16
Ranking Based On Selection: 16
Mai Mohamed
Ain Shams University
Cairo, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,201
6,224
0.676
clinical pharmacy
pharmacy practice
hospital pharmac
* Last 6 Years Citation Counts Rankings
Rankings
89,291
221
17
Ranking Based On Selection: 17
Ali El Naggar
Ain Shams University
Cairo, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,333
5,127
0.961
Soil quality
Biochar
Environmental Soil Science
Soil fertilit
* Last 6 Years Citation Counts Rankings
Rankings
90,333
223
18
Ranking Based On Selection: 18
Abdel Nasser B Singab
Ain Shams University
Cairo, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,490
5,081
0.678
Phytochemistry
hepatoprotective effects of natural products
Pharmacognosy
Phytotherap
* Last 6 Years Citation Counts Rankings
Rankings
93,506
230
19
Ranking Based On Selection: 19
Eslam Ali Maher
Ain Shams University
Cairo, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
30,738
4,943
0.161
* Last 6 Years Citation Counts Rankings
Rankings
97,116
239
20
Ranking Based On Selection: 20
MS Attia
Ain Shams University
Cairo, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,926
4,802
0.810
* Last 6 Years Citation Counts Rankings
Rankings
99,550
247
21
Ranking Based On Selection: 21
Hoda K Mohamed
Ain Shams University
Cairo, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,426
4,709
0.733
Artificial Intelligence
Data Mining
Data base
software engineering
image processin
* Last 6 Years Citation Counts Rankings
Rankings
100,481
254
22
Ranking Based On Selection: 22
MM El Nahass
Ain Shams University
Cairo, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,475
4,676
0.446
Optical properties of thin films
Physical properties of semiconductors (thin films and crystals
* Last 6 Years Citation Counts Rankings
Rankings
108,056
269
23
Ranking Based On Selection: 23
Nadia Hamdy|Hamdy, NM, Hamdy, Nadia M.
Ain Shams University
Cairo, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,329
4,405
0.827
Pharmaceutical Biochem. Molecular Oncology Epigenetics Precision Drug repurposing Exosomes In silic
* Last 6 Years Citation Counts Rankings
Rankings
117,422
309
24
Ranking Based On Selection: 24
Fatma Morgan
Ain Shams University
Cairo, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,074
4,111
0.371
Solar energy and Nanotechnolog
* Last 6 Years Citation Counts Rankings
Rankings
117,816
311
25
Ranking Based On Selection: 25
Maha Nasr
Ain Shams University
Cairo, Egypt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,234
4,100
0.783