Citation Rankings
Highly Cited Researchers
Highly Cited Researchers 70 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
Social change in post conflict countries
social response to zoonotic disease
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,266
3,410
0.187
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* Total Citation Counts Rankings
Ranking Based On Selection: 2
Neglected Tropical Diseases
Entomology
Health System
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,691
5,504
0.375
* Total Citation Counts Rankings
Ranking Based On Selection: 3
land cover
pollution
Sierra Leon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,996
1,296
0.259
* Total Citation Counts Rankings
Ranking Based On Selection: 4
Tropical Medicine
Epidemiology
Infectious diseases
surveillance
mhealt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,427
3,322
0.750
* Total Citation Counts Rankings
Ranking Based On Selection: 5
Data Science
Data Analytics
AI
Social Justic
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,933
940
0.486
* Total Citation Counts Rankings
Ranking Based On Selection: 6
Agricultural Engineerin
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,802
946
0.525
* Total Citation Counts Rankings
Ranking Based On Selection: 7
Renewable energ
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,167
336
0.288
* Total Citation Counts Rankings
Ranking Based On Selection: 8
Sacred Groves
Podostemaceae
Tropical Plants
Ecological Surveillance of Viral Pathogen
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
940
515
0.548
* Total Citation Counts Rankings
Ranking Based On Selection: 9
Argriculture
Plant Physiology
Biological Nitrogen Fixation
Water Quality Managemen
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
877
680
0.775
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* Total Citation Counts Rankings
Ranking Based On Selection: 10
Blue Economic diversification in the era of Climate chang
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
824
505
0.613
* Total Citation Counts Rankings
Ranking Based On Selection: 11
Medicinal plant research
Veterinary Scienc
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
815
452
0.555
* Total Citation Counts Rankings
Ranking Based On Selection: 12
developmental issue
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
693
609
0.879
* Total Citation Counts Rankings
Ranking Based On Selection: 13
Physical Activity & Public Health
Public Health Nutrition
Health Education Promotio
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
549
322
0.587
* Total Citation Counts Rankings
Ranking Based On Selection: 14
Animal dtsease dog rabie
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
485
291
0.600
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Forestry
Biodiversity
Ecosystem function Environmen
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
467
461
0.987
* Total Citation Counts Rankings
Ranking Based On Selection: 16
Development planning and urban sustainability
Environment
Informality
Mobility andTransport
Disaster Risk Reduction and Citi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
402
376
0.935
* Total Citation Counts Rankings
Ranking Based On Selection: 17
soil fertility
soil chemistry
biochar
soil erosion and nutrient leaching
remote sensing and GI
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
345
245
0.710
* Total Citation Counts Rankings
Ranking Based On Selection: 18
Control of Infectious Diseases
Health Systems & Health Policy
Pandemic/Epidemic Outbreak
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
317
314
0.991
* Total Citation Counts Rankings
Ranking Based On Selection: 19
Health Systems
Child and Adolescent Health
Maternal and Child Health
Public Health
Women's Healt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
289
285
0.986
* Total Citation Counts Rankings
Ranking Based On Selection: 20
Agricultural Economics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
263
0
0.000
* Total Citation Counts Rankings
Ranking Based On Selection: 21
Infectious Disease Epidemiology
Disease Surveillance
Vaccinology
Emerging infectious Disease
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
241
239
0.992
* Total Citation Counts Rankings
Ranking Based On Selection: 22
Soil science
agronomy
climate change
land evaluation
remote sensing and GI
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
214
153
0.715
* Total Citation Counts Rankings
Ranking Based On Selection: 23
Adolescents Health
Women's Health
Public Health
Data Analysis
Global Health Surveys
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
199
196
0.985
* Total Citation Counts Rankings
Ranking Based On Selection: 24
Ecology
Wildlife Management
Conservatio
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
189
185
0.979
* Total Citation Counts Rankings
Ranking Based On Selection: 25
Conservation
Ecology
Sierra Leon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
172
172
1.000
* Total Citation Counts Rankings
Rankings
49,180
2
1
Ranking Based On Selection: 1
Paul Richards
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,266
3,410
0.187
Social change in post conflict countries
social response to zoonotic disease
* Total Citation Counts Rankings
Rankings
65,650
3
2
Ranking Based On Selection: 2
Bockarie M
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,691
5,504
0.375
* Total Citation Counts Rankings
Rankings
217,459
4
3
Ranking Based On Selection: 3
Richard Wadsworth
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,996
1,296
0.259
land cover
pollution
Sierra Leon
* Total Citation Counts Rankings
Rankings
243,265
5
4
Ranking Based On Selection: 4
Rashid Ansumana
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,427
3,322
0.750
Tropical Medicine
Epidemiology
Infectious diseases
surveillance
mhealt
* Total Citation Counts Rankings
Rankings
474,089
8
5
Ranking Based On Selection: 5
Ibrahim Denis Fofanah
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,933
940
0.486
Data Science
Data Analytics
AI
Social Justic
* Total Citation Counts Rankings
Rankings
497,376
11
6
Ranking Based On Selection: 6
Juana P. Moiwo
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,802
946
0.525
Agricultural Engineerin
* Total Citation Counts Rankings
Rankings
649,002
14
7
Ranking Based On Selection: 7
Hindowa Lebbie
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,167
336
0.288
* Total Citation Counts Rankings
Rankings
727,039
16
8
Ranking Based On Selection: 8
Aiah Lebbie
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
940
515
0.548
Sacred Groves
Podostemaceae
Tropical Plants
Ecological Surveillance of Viral Pathogen
* Total Citation Counts Rankings
Rankings
751,763
18
9
Ranking Based On Selection: 9
Sheku Alfred Kanu
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
877
680
0.775
Argriculture
Plant Physiology
Biological Nitrogen Fixation
Water Quality Managemen
* Total Citation Counts Rankings
Rankings
773,836
19
10
Ranking Based On Selection: 10
Mathew Didlyn Kpundeh|Kpundeh Mathew Didlyn, Kpundeh M.D, Mathew D. Kpundeh
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
824
505
0.613
Blue Economic diversification in the era of Climate chang
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
777,754
20
11
Ranking Based On Selection: 11
Victor. P. Bagla
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
815
452
0.555
Medicinal plant research
Veterinary Scienc
* Total Citation Counts Rankings
Rankings
834,109
22
12
Ranking Based On Selection: 12
Alhaji Morlai Bangura
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
693
609
0.879
* Total Citation Counts Rankings
Rankings
918,265
24
13
Ranking Based On Selection: 13
Samuel Joseph Bebeley
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
549
322
0.587
Physical Activity & Public Health
Public Health Nutrition
Health Education Promotio
* Total Citation Counts Rankings
Rankings
969,893
29
14
Ranking Based On Selection: 14
Roland Suluku
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
485
291
0.600
* Total Citation Counts Rankings
Rankings
985,306
30
15
Ranking Based On Selection: 15
Moses Fayiah
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
467
461
0.987
Forestry
Biodiversity
Ecosystem function Environmen
* Total Citation Counts Rankings
Rankings
1,047,452
32
16
Ranking Based On Selection: 16
Braima Koroma
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
402
376
0.935
Development planning and urban sustainability
Environment
Informality
Mobility andTransport
Disaster Risk Reduction and Citi
* Total Citation Counts Rankings
Rankings
1,111,455
33
17
Ranking Based On Selection: 17
Alie Kamara
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
345
245
0.710
soil fertility
soil chemistry
biochar
soil erosion and nutrient leaching
remote sensing and GI
* Total Citation Counts Rankings
Rankings
1,147,098
35
18
Ranking Based On Selection: 18
Lawrence Sao Babawo
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
317
314
0.991
Control of Infectious Diseases
Health Systems & Health Policy
Pandemic/Epidemic Outbreak
* Total Citation Counts Rankings
Rankings
1,188,529
36
19
Ranking Based On Selection: 19
Augustus Osborne
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
289
285
0.986
Health Systems
Child and Adolescent Health
Maternal and Child Health
Public Health
Women's Healt
* Total Citation Counts Rankings
Rankings
1,233,706
41
20
Ranking Based On Selection: 20
Joseph Sidique Momoh
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
263
0
0.000
* Total Citation Counts Rankings
Rankings
1,273,407
45
21
Ranking Based On Selection: 21
Ibrahim Massaquoi|Ibrahim Bob Swaray, Swaray, Ibrahim
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
241
239
0.992
Infectious Disease Epidemiology
Disease Surveillance
Vaccinology
Emerging infectious Disease
* Total Citation Counts Rankings
Rankings
1,332,024
50
22
Ranking Based On Selection: 22
Denis Magnus Ken Amara
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
214
153
0.715
Soil science
agronomy
climate change
land evaluation
remote sensing and GI
* Total Citation Counts Rankings
Rankings
1,367,676
51
23
Ranking Based On Selection: 23
Camilla Bangura
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
199
196
0.985
Adolescents Health
Women's Health
Public Health
Data Analysis
Global Health Surveys
* Total Citation Counts Rankings
Rankings
1,394,452
52
24
Ranking Based On Selection: 24
Ibrahim A Bakarr
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
189
185
0.979
Ecology
Wildlife Management
Conservatio
* Total Citation Counts Rankings
Rankings
1,443,461
53
25
Ranking Based On Selection: 25
Jonathan Johnny
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
172
172
1.000