Citation Rankings
Highly Cited Researchers
Highly Cited Researchers 204 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
Nutrition and Non-communicable disease
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
73,908
62,786
0.850
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* Total Citation Counts Rankings
Ranking Based On Selection: 2
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
64,847
58,158
0.897
* Total Citation Counts Rankings
Ranking Based On Selection: 3
Tropical and infectious disease
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
51,904
45,186
0.871
* Total Citation Counts Rankings
Ranking Based On Selection: 4
Antibiotic use
Resistanc
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
46,465
39,756
0.856
* Total Citation Counts Rankings
Ranking Based On Selection: 5
Drug related stud
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44,888
39,710
0.885
* Total Citation Counts Rankings
Ranking Based On Selection: 6
Medical and Health Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,076
18,996
0.996
* Total Citation Counts Rankings
Ranking Based On Selection: 7
Neonatal and pediatrics healt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,830
13,768
0.996
* Total Citation Counts Rankings
Ranking Based On Selection: 8
Medicine and Health sciences
Hematology
Transfusion medicin
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,585
5,558
0.995
* Total Citation Counts Rankings
Ranking Based On Selection: 9
Public Health Nutritio
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,499
5,384
0.979
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* Total Citation Counts Rankings
Ranking Based On Selection: 10
Maternal Health
Gestational Weight Gain
Epidemiology
Cancer Epidemiology
Social Determinants of Healt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,759
2,854
0.759
* Total Citation Counts Rankings
Ranking Based On Selection: 11
horticulture
postharvest
agronom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,226
1,912
0.593
* Total Citation Counts Rankings
Ranking Based On Selection: 12
Nursin
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,085
3,064
0.993
* Total Citation Counts Rankings
Ranking Based On Selection: 13
Development Economics
Agricultural Economics
Agricultural Extension
international trad
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,978
1,248
0.419
* Total Citation Counts Rankings
Ranking Based On Selection: 14
Production Economics
Climate Change
Value Chain Analysis
Resource Economic
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,823
1,952
0.691
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Biodiversity and Ecosystem Services
Nature Based Solution
Climate Chang
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,546
2,271
0.892
* Total Citation Counts Rankings
Ranking Based On Selection: 16
Psychiatr
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,357
2,348
0.996
* Total Citation Counts Rankings
Ranking Based On Selection: 17
Public Health
Epidemiology
Reproductive Health and Infectious diseases including Tuberculosis
HI
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,286
1,803
0.789
* Total Citation Counts Rankings
Ranking Based On Selection: 18
Bioenergy
Waste management
Nano material
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,992
1,634
0.820
* Total Citation Counts Rankings
Ranking Based On Selection: 19
Hydrological modeling
Water Resources Management
climate change
Drought
Land use land cove
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,948
1,777
0.912
* Total Citation Counts Rankings
Ranking Based On Selection: 20
Maternal
child and neonatal health
health and medical science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,734
1,722
0.993
* Total Citation Counts Rankings
Ranking Based On Selection: 21
Medicinal plants
ethnobotany
antioxidants
bioactivity studies
phytochemistr
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,705
738
0.433
* Total Citation Counts Rankings
Ranking Based On Selection: 22
Analytical Chemistr
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,537
1,106
0.720
* Total Citation Counts Rankings
Ranking Based On Selection: 23
Parasitology
Immunology
Zoonoses
Tropical Parasitic Diseases
Medical EntomologyBiomedical Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,484
633
0.427
* Total Citation Counts Rankings
Ranking Based On Selection: 24
Nursin
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,268
1,219
0.961
* Total Citation Counts Rankings
Ranking Based On Selection: 25
Epidemiology
Microbiology
Veterinary Public Health
Zoonose
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,222
917
0.750
* Total Citation Counts Rankings
Rankings
5,765
1
1
Ranking Based On Selection: 1
Mekonnen Sisay
Haramaya University
Haramaya, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
73,908
62,786
0.850
Nutrition and Non-communicable disease
* Total Citation Counts Rankings
Rankings
7,132
3
2
Ranking Based On Selection: 2
Zerihun Ataro
Haramaya University
Haramaya, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
64,847
58,158
0.897
* Total Citation Counts Rankings
Rankings
10,191
9
3
Ranking Based On Selection: 3
Fitsum Weldegebreal
Haramaya University
Haramaya, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
51,904
45,186
0.871
* Total Citation Counts Rankings
Rankings
12,107
15
4
Ranking Based On Selection: 4
Dumessa Edessa
Haramaya University
Haramaya, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
46,465
39,756
0.856
Antibiotic use
Resistanc
* Total Citation Counts Rankings
Rankings
12,839
16
5
Ranking Based On Selection: 5
Jemal Abdela
Haramaya University
Haramaya, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44,888
39,710
0.885
* Total Citation Counts Rankings
Rankings
46,391
49
6
Ranking Based On Selection: 6
Lemma Demissie
Haramaya University
Haramaya, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,076
18,996
0.996
Medical and Health Science
* Total Citation Counts Rankings
Rankings
71,161
67
7
Ranking Based On Selection: 7
Assefa Desalew
Haramaya University
Haramaya, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,830
13,768
0.996
Neonatal and pediatrics healt
* Total Citation Counts Rankings
Rankings
195,438
105
8
Ranking Based On Selection: 8
Mesay Arkew
Haramaya University
Haramaya, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,585
5,558
0.995
Medicine and Health sciences
Hematology
Transfusion medicin
* Total Citation Counts Rankings
Rankings
198,441
108
9
Ranking Based On Selection: 9
Berhe Gebremichael
Haramaya University
Haramaya, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,499
5,384
0.979
Public Health Nutritio
* Total Citation Counts Rankings
Rankings
282,264
150
10
Ranking Based On Selection: 10
Fekede Asefa
Haramaya University
Haramaya, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,759
2,854
0.759
Maternal Health
Gestational Weight Gain
Epidemiology
Cancer Epidemiology
Social Determinants of Healt
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.
* Total Citation Counts Rankings
Rankings
321,399
177
11
Ranking Based On Selection: 11
Kebede Woldetsadik
Haramaya University
Haramaya, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,226
1,912
0.593
horticulture
postharvest
agronom
* Total Citation Counts Rankings
Rankings
333,466
180
12
Ranking Based On Selection: 12
Tilaye Gebru
Haramaya University
Haramaya, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,085
3,064
0.993
* Total Citation Counts Rankings
Rankings
343,186
185
13
Ranking Based On Selection: 13
Kassa Belay
Haramaya University
Haramaya, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,978
1,248
0.419
Development Economics
Agricultural Economics
Agricultural Extension
international trad
* Total Citation Counts Rankings
Rankings
358,275
192
14
Ranking Based On Selection: 14
Mengistu Ketema
Haramaya University
Haramaya, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,823
1,952
0.691
Production Economics
Climate Change
Value Chain Analysis
Resource Economic
* Total Citation Counts Rankings
Rankings
388,522
211
15
Ranking Based On Selection: 15
Sintayehu Workeneh Dejene
Haramaya University
Haramaya, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,546
2,271
0.892
Biodiversity and Ecosystem Services
Nature Based Solution
Climate Chang
* Total Citation Counts Rankings
Rankings
411,541
225
16
Ranking Based On Selection: 16
Mandaras Tariku
Haramaya University
Haramaya, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,357
2,348
0.996
* Total Citation Counts Rankings
Rankings
421,047
235
17
Ranking Based On Selection: 17
Lemessa Oljira
Haramaya University
Haramaya, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,286
1,803
0.789
Public Health
Epidemiology
Reproductive Health and Infectious diseases including Tuberculosis
HI
* Total Citation Counts Rankings
Rankings
464,692
275
18
Ranking Based On Selection: 18
Mani Jayakumar
Haramaya University
Haramaya, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,992
1,634
0.820
Bioenergy
Waste management
Nano material
* Total Citation Counts Rankings
Rankings
472,089
280
19
Ranking Based On Selection: 19
Asfaw Kebede Kassa
Haramaya University
Haramaya, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,948
1,777
0.912
Hydrological modeling
Water Resources Management
climate change
Drought
Land use land cove
* Total Citation Counts Rankings
Rankings
511,124
315
20
Ranking Based On Selection: 20
Tamirat Getachew
Haramaya University
Haramaya, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,734
1,722
0.993
Maternal
child and neonatal health
health and medical science
* Total Citation Counts Rankings
Rankings
516,938
323
21
Ranking Based On Selection: 21
JM Sasikumar
Haramaya University
Haramaya, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,705
738
0.433
Medicinal plants
ethnobotany
antioxidants
bioactivity studies
phytochemistr
* Total Citation Counts Rankings
Rankings
552,152
347
22
Ranking Based On Selection: 22
Meseret Amde Aga
Haramaya University
Haramaya, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,537
1,106
0.720
* Total Citation Counts Rankings
Rankings
564,455
358
23
Ranking Based On Selection: 23
Sissay Menkir
Haramaya University
Haramaya, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,484
633
0.427
Parasitology
Immunology
Zoonoses
Tropical Parasitic Diseases
Medical EntomologyBiomedical Science
* Total Citation Counts Rankings
Rankings
619,552
406
24
Ranking Based On Selection: 24
Teshager Worku
Haramaya University
Haramaya, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,268
1,219
0.961
* Total Citation Counts Rankings
Rankings
632,983
413
25
Ranking Based On Selection: 25
Berhanu Sibhat
Haramaya University
Haramaya, Ethiopia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,222
917
0.750
Epidemiology
Microbiology
Veterinary Public Health
Zoonose