Citation Rankings
Highly Cited Researchers
Highly Cited Researchers 351 Scientists Citation Rankings - 2025
The Citation Rankings (Highly Cited Researchers) list 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
Applied and Environmental Microbiology
Water Quality
Antimicrobial Resistance.
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,645
17,888
0.624
* Total Citation Counts Rankings
Ranking Based On Selection: 2
Biological science
phytomedicine
botany
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
26,244
11,528
0.439
* Total Citation Counts Rankings
Ranking Based On Selection: 3
Microbiology
Disease control and prevention
Infectious disease epidemiology
Antimicrobial resistance
Public health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,523
23,431
0.996
* Total Citation Counts Rankings
Ranking Based On Selection: 4
Addressing the burden of infectious diseases like malaria
TB
HIV and associated co-morbid
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,591
7,162
0.747
* Total Citation Counts Rankings
Ranking Based On Selection: 5
Maternal and child health and indigenous knowledge and medicinal plants
law
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,016
1,777
0.197
* Total Citation Counts Rankings
Ranking Based On Selection: 6
Physical Sciences
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,804
5,066
0.649
* Total Citation Counts Rankings
Ranking Based On Selection: 7
Ethnobotany
plant ecology
systematics
biodiversity conservation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,523
5,859
0.779
* Total Citation Counts Rankings
Ranking Based On Selection: 8
Microbiolology
Antimicrobial resistance
Research Synthesis
ML
Public Health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,252
7,167
0.988
* Total Citation Counts Rankings
Ranking Based On Selection: 9
drug delivery systems
organic synthesis
polymer-drug conjugates
wound dressing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,780
5,112
0.884
* Total Citation Counts Rankings
Ranking Based On Selection: 10
Natural Product Chemistry
Analytical Chemistry
Inorganic Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,972
3,829
0.770
* Total Citation Counts Rankings
Ranking Based On Selection: 11
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,822
3,692
0.766
* Total Citation Counts Rankings
Ranking Based On Selection: 12
Soil fertility
waste management
Vermicomposting
Agronomy
climate smart agriculture
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,510
2,194
0.486
* Total Citation Counts Rankings
Ranking Based On Selection: 13
Land reform
agricultural development
poverty reduction
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,352
1,196
0.275
* Total Citation Counts Rankings
Ranking Based On Selection: 14
biochemistry and microbiology and meat sciences
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,196
1,538
0.481
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Physical Geography
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,009
2,109
0.701
* Total Citation Counts Rankings
Ranking Based On Selection: 16
Teacher Education
Curriculum Studies
Economics Education
and Research Method
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,900
1,788
0.617
* Total Citation Counts Rankings
Ranking Based On Selection: 17
Biochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,687
1,247
0.464
* Total Citation Counts Rankings
Ranking Based On Selection: 18
labour studies
african studies
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,476
539
0.218
* Total Citation Counts Rankings
Ranking Based On Selection: 19
Large mammal ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,457
1,277
0.520
* Total Citation Counts Rankings
Ranking Based On Selection: 20
climate smart agriculture
crop production
rural development
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,421
1,105
0.456
* Total Citation Counts Rankings
Ranking Based On Selection: 21
organometallic chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,335
617
0.264
* Total Citation Counts Rankings
Ranking Based On Selection: 22
Land Reform
Food Security
Rural Livelihoods
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,292
1,450
0.633
* Total Citation Counts Rankings
Ranking Based On Selection: 23
Food & Nutritional Biochemistry
Functional Foods
Nutraceuticals
Chronic Metabolic Diseases
Public Health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,194
1,557
0.710
* Total Citation Counts Rankings
Ranking Based On Selection: 24
Geomorphology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,168
773
0.357
* Total Citation Counts Rankings
Ranking Based On Selection: 25
Human and organizational capabilities and how they contribute towards the theme of development.
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,133
1,767
0.828
* Total Citation Counts Rankings
Rankings
24,732
70
1
Ranking Based On Selection: 1
Anthony I Okoh
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,645
17,888
0.624
Applied and Environmental Microbiology
Water Quality
Antimicrobial Resistance.
* Total Citation Counts Rankings
Rankings
28,201
81
2
Ranking Based On Selection: 2
AJ Afolayan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
26,244
11,528
0.439
Biological science
phytomedicine
botany
* Total Citation Counts Rankings
Rankings
33,114
103
3
Ranking Based On Selection: 3
Chidozie Declan Iwu
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,523
23,431
0.996
Microbiology
Disease control and prevention
Infectious disease epidemiology
Antimicrobial resistance
Public health
* Total Citation Counts Rankings
Rankings
105,654
377
4
Ranking Based On Selection: 4
Kelechi Oladimeji
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,591
7,162
0.747
Addressing the burden of infectious diseases like malaria
TB
HIV and associated co-morbid
* Total Citation Counts Rankings
Rankings
113,385
416
5
Ranking Based On Selection: 5
Nikodem V Cheryl
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,016
1,777
0.197
Maternal and child health and indigenous knowledge and medicinal plants
law
* Total Citation Counts Rankings
Rankings
133,138
522
6
Ranking Based On Selection: 6
Edson Meyer
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,804
5,066
0.649
* Total Citation Counts Rankings
Rankings
138,523
552
7
Ranking Based On Selection: 7
Alfred Maroyi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,523
5,859
0.779
Ethnobotany
plant ecology
systematics
biodiversity conservation
* Total Citation Counts Rankings
Rankings
144,038
572
8
Ranking Based On Selection: 8
Temitope Ekundayo
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,252
7,167
0.988
Microbiolology
Antimicrobial resistance
Research Synthesis
ML
Public Health
* Total Citation Counts Rankings
Rankings
181,783
742
9
Ranking Based On Selection: 9
Blessing A. Aderibigbe
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,780
5,112
0.884
drug delivery systems
organic synthesis
polymer-drug conjugates
wound dressing
* Total Citation Counts Rankings
Rankings
210,465
877
10
Ranking Based On Selection: 10
Omobola Oluranti Okoh
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,972
3,829
0.770
Natural Product Chemistry
Analytical Chemistry
Inorganic Chemistry
* Total Citation Counts Rankings
Rankings
216,754
905
11
Ranking Based On Selection: 11
Uchechukwu Nwodo
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,822
3,692
0.766
* Total Citation Counts Rankings
Rankings
230,763
969
12
Ranking Based On Selection: 12
Pearson Nyari Stephano Mnkeni
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,510
2,194
0.486
Soil fertility
waste management
Vermicomposting
Agronomy
climate smart agriculture
* Total Citation Counts Rankings
Rankings
238,506
1,003
13
Ranking Based On Selection: 13
Michael Aliber
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,352
1,196
0.275
Land reform
agricultural development
poverty reduction
* Total Citation Counts Rankings
Rankings
312,441
1,384
14
Ranking Based On Selection: 14
Sunday Oyedemi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,196
1,538
0.481
biochemistry and microbiology and meat sciences
* Total Citation Counts Rankings
Rankings
328,454
1,472
15
Ranking Based On Selection: 15
Werner Nel
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,009
2,109
0.701
* Total Citation Counts Rankings
Rankings
338,304
1,527
16
Ranking Based On Selection: 16
Emmanuel O. Adu
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,900
1,788
0.617
Teacher Education
Curriculum Studies
Economics Education
and Research Method
* Total Citation Counts Rankings
Rankings
359,877
1,640
17
Ranking Based On Selection: 17
Graeme Bradley
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,687
1,247
0.464
* Total Citation Counts Rankings
Rankings
383,518
1,774
18
Ranking Based On Selection: 18
Sakhela Buhlungu
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,476
539
0.218
* Total Citation Counts Rankings
Rankings
385,782
1,783
19
Ranking Based On Selection: 19
Craig Tambling
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,457
1,277
0.520
* Total Citation Counts Rankings
Rankings
390,185
1,809
20
Ranking Based On Selection: 20
Cornelius Chiduza
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,421
1,105
0.456
climate smart agriculture
crop production
rural development
* Total Citation Counts Rankings
Rankings
400,880
1,867
21
Ranking Based On Selection: 21
Alexandre Sadimenko
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,335
617
0.264
* Total Citation Counts Rankings
Rankings
406,314
1,902
22
Ranking Based On Selection: 22
Abby Mushunje
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,292
1,450
0.633
Land Reform
Food Security
Rural Livelihoods
* Total Citation Counts Rankings
Rankings
419,601
1,982
23
Ranking Based On Selection: 23
Gloria A Otunola
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,194
1,557
0.710
Food & Nutritional Biochemistry
Functional Foods
Nutraceuticals
Chronic Metabolic Diseases
Public Health
* Total Citation Counts Rankings
Rankings
423,418
2,003
24
Ranking Based On Selection: 24
Paul Sumner
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,168
773
0.357
* Total Citation Counts Rankings
Rankings
428,471
2,025
25
Ranking Based On Selection: 25
Willie Chinyamurindi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,133
1,767
0.828
Human and organizational capabilities and how they contribute towards the theme of development.