Citation Rankings
Highly Cited Researchers
Highly Cited Researchers Citation Rankings 2025
The Citation Rankings (Highly Cited Researchers) highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the Scientists Last 6 Years Citation Index, Universities Total Citations Rankings 2025, and Universities Last 6 Years Citations Rankings 2025.
* Total Citation Counts Rankings
Ranking Based On Selection: 1
Civil Engineering
Construction
Infrastructure
Sustainability
Information and Communication Technology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,786
1,344
0.355
* Total Citation Counts Rankings
Ranking Based On Selection: 2
Metabolic Syndrome
Diabetes
Functional Foods
Antioxidants
Nutraceuticals
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,428
2,489
0.726
* Total Citation Counts Rankings
Ranking Based On Selection: 3
Clinical and Nutritional Biochemistry
Epidemiology of Chronic Diseases
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,691
1,594
0.592
* Total Citation Counts Rankings
Ranking Based On Selection: 4
Work Engagement
Work-life Balance
Career Development
Cyberbehaviour
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,620
2,050
0.782
* Total Citation Counts Rankings
Ranking Based On Selection: 5
Functional foods
Phytotherapy
Heavy metal toxicity
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,017
1,916
0.950
* Total Citation Counts Rankings
Ranking Based On Selection: 6
Agricultural Economics and Rural Development
Resource and Energy Economics
Impact Assessment
Climate Change Economics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,799
1,483
0.824
* Total Citation Counts Rankings
Ranking Based On Selection: 7
Inorganic chemistry
medicinal chemistry and material science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,697
1,471
0.867
* Total Citation Counts Rankings
Ranking Based On Selection: 8
Environmental
Food and Toxicological Biochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,675
1,029
0.614
* Total Citation Counts Rankings
Ranking Based On Selection: 9
Macroeconomics
Monetary and Financial Economics
Econometrics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,526
930
0.609
* Total Citation Counts Rankings
Ranking Based On Selection: 10
Fish Nutrition
Climate Change
Biodiversity
Biotechnology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,451
758
0.522
* Total Citation Counts Rankings
Ranking Based On Selection: 11
Artificial Neural Network
Machine learning
Information System and Security
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,399
1,368
0.978
* Total Citation Counts Rankings
Ranking Based On Selection: 12
Environmental engineering
waste technology and management
urban pollution and control
climate change impact/adaptation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,229
856
0.697
* Total Citation Counts Rankings
Ranking Based On Selection: 13
Analytical Chemistry
Environmental Chemistry
Physical Chemistry
Computational Chemistry
Water treatment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,152
990
0.859
* Total Citation Counts Rankings
Ranking Based On Selection: 14
Cancer research
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,151
408
0.354
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Environmental/Molecular Toxicology
Cancer immunotherapy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,065
852
0.800
* Total Citation Counts Rankings
Ranking Based On Selection: 16
Medical Microbiology
Immunology
Public Health
HIV
Parasitology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,056
614
0.581
* Total Citation Counts Rankings
Ranking Based On Selection: 17
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,017
882
0.867
* Total Citation Counts Rankings
Ranking Based On Selection: 18
Fisheries
Aquaculture
toxicology
fish toxicology
hydrobiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
962
911
0.947
* Total Citation Counts Rankings
Ranking Based On Selection: 19
Alternative Proteins
fish toxicology
Aquatic toxicology
Microplastic
Aquaculture
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
956
905
0.947
* Total Citation Counts Rankings
Ranking Based On Selection: 20
Peace
Conflict
Security Studies
African Politics
History
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
930
716
0.770
* Total Citation Counts Rankings
Ranking Based On Selection: 21
Natural Science- Biochemistry
Nutrition and Biochemistry
Obesity
Diabetes
medicinal plants and non- communicable diseases
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
868
717
0.826
* Total Citation Counts Rankings
Ranking Based On Selection: 22
Phytomedicine and chronic diseases
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
801
753
0.940
* Total Citation Counts Rankings
Ranking Based On Selection: 23
climate change adaptation and education
farming systems transformation
efficient resource use
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
801
735
0.918
* Total Citation Counts Rankings
Ranking Based On Selection: 24
Renewable Energy: Solar Cell Materials and Devices
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
757
577
0.762
* Total Citation Counts Rankings
Ranking Based On Selection: 25
Chemometrics
Electrocatalysis
Surface reaction mechanisms
Wastewater treatment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
743
571
0.769
* Total Citation Counts Rankings
Rankings
264,988
260
1
Ranking Based On Selection: 1
Onuegbu O. Ugwu
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,786
1,344
0.355
Civil Engineering
Construction
Infrastructure
Sustainability
Information and Communication Technology
* Total Citation Counts Rankings
Rankings
288,566
310
2
Ranking Based On Selection: 2
Chinedum O. Eleazu|Ogbonnaya Eleazu Chinedum
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,428
2,489
0.726
Metabolic Syndrome
Diabetes
Functional Foods
Antioxidants
Nutraceuticals
* Total Citation Counts Rankings
Rankings
352,507
467
3
Ranking Based On Selection: 3
Chukwunonso Ecc Ejike
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,691
1,594
0.592
Clinical and Nutritional Biochemistry
Epidemiology of Chronic Diseases
* Total Citation Counts Rankings
Rankings
360,012
492
4
Ranking Based On Selection: 4
Fabian Ugwu
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,620
2,050
0.782
Work Engagement
Work-life Balance
Career Development
Cyberbehaviour
* Total Citation Counts Rankings
Rankings
437,934
747
5
Ranking Based On Selection: 5
Ademola C. Famurewa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,017
1,916
0.950
Functional foods
Phytotherapy
Heavy metal toxicity
* Total Citation Counts Rankings
Rankings
474,432
922
6
Ranking Based On Selection: 6
Robert Onyeneke
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,799
1,483
0.824
Agricultural Economics and Rural Development
Resource and Energy Economics
Impact Assessment
Climate Change Economics
* Total Citation Counts Rankings
Rankings
493,801
1,001
7
Ranking Based On Selection: 7
Anthony Chinonso Ekennia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,697
1,471
0.867
Inorganic chemistry
medicinal chemistry and material science
* Total Citation Counts Rankings
Rankings
498,281
1,013
8
Ranking Based On Selection: 8
Nwogo Ajuka Obasi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,675
1,029
0.614
Environmental
Food and Toxicological Biochemistry
* Total Citation Counts Rankings
Rankings
529,732
1,170
9
Ranking Based On Selection: 9
Omoke Philip
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,526
930
0.609
Macroeconomics
Monetary and Financial Economics
Econometrics
* Total Citation Counts Rankings
Rankings
546,767
1,271
10
Ranking Based On Selection: 10
Johnny O. Ogunji
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,451
758
0.522
Fish Nutrition
Climate Change
Biodiversity
Biotechnology
* Total Citation Counts Rankings
Rankings
559,183
1,325
11
Ranking Based On Selection: 11
Alo Uzoma
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,399
1,368
0.978
Artificial Neural Network
Machine learning
Information System and Security
* Total Citation Counts Rankings
Rankings
604,514
1,566
12
Ranking Based On Selection: 12
Chukwunonye Ezeah
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,229
856
0.697
Environmental engineering
waste technology and management
urban pollution and control
climate change impact/adaptation
* Total Citation Counts Rankings
Rankings
627,492
1,710
13
Ranking Based On Selection: 13
Chukwunonso Peter Okoli
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,152
990
0.859
Analytical Chemistry
Environmental Chemistry
Physical Chemistry
Computational Chemistry
Water treatment
* Total Citation Counts Rankings
Rankings
628,074
1,714
14
Ranking Based On Selection: 14
Joseph Nwankwo
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,151
408
0.354
* Total Citation Counts Rankings
Rankings
655,710
1,893
15
Ranking Based On Selection: 15
Azubuike Peter Ebokaiwe
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,065
852
0.800
Environmental/Molecular Toxicology
Cancer immunotherapy
* Total Citation Counts Rankings
Rankings
658,895
1,924
16
Ranking Based On Selection: 16
Moses Alo
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,056
614
0.581
Medical Microbiology
Immunology
Public Health
HIV
Parasitology
* Total Citation Counts Rankings
Rankings
672,344
2,045
17
Ranking Based On Selection: 17
Chinyere A. Nwajiuba
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,017
882
0.867
* Total Citation Counts Rankings
Rankings
692,249
2,311
18
Ranking Based On Selection: 18
Stanley Iheanacho
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
962
911
0.947
Fisheries
Aquaculture
toxicology
fish toxicology
hydrobiology
* Total Citation Counts Rankings
Rankings
694,469
2,339
19
Ranking Based On Selection: 19
Stanley C. Iheanacho
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
956
905
0.947
Alternative Proteins
fish toxicology
Aquatic toxicology
Microplastic
Aquaculture
* Total Citation Counts Rankings
Rankings
704,404
2,452
20
Ranking Based On Selection: 20
Kelechi Johnmary Ani
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
930
716
0.770
Peace
Conflict
Security Studies
African Politics
History
* Total Citation Counts Rankings
Rankings
729,288
2,785
21
Ranking Based On Selection: 21
Ekeleme-Egedigwe Chima|Egedigwe Agatha Chima
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
868
717
0.826
Natural Science- Biochemistry
Nutrition and Biochemistry
Obesity
Diabetes
medicinal plants and non- communicable diseases
* Total Citation Counts Rankings
Rankings
757,753
3,220
22
Ranking Based On Selection: 22
Chinyere Aloke
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
801
753
0.940
* Total Citation Counts Rankings
Rankings
757,770
3,221
23
Ranking Based On Selection: 23
Christiana Ogonna Igberi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
801
735
0.918
climate change adaptation and education
farming systems transformation
efficient resource use
* Total Citation Counts Rankings
Rankings
777,502
3,499
24
Ranking Based On Selection: 24
Nwankwo Uba Nwankwo
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
757
577
0.762
* Total Citation Counts Rankings
Rankings
784,004
3,594
25
Ranking Based On Selection: 25
Nnaemeka Joshua Nnochiri Nnaji
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
743
571
0.769
Chemometrics
Electrocatalysis
Surface reaction mechanisms
Wastewater treatment