Citation Rankings
Highly Cited Researchers
Highly Cited Researchers 173 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
Planning
Wildlife Management
Tourism Management
African Development
Culture
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,576
976
0.273
* Total Citation Counts Rankings
Ranking Based On Selection: 2
Cellular networks security
Artificial Intelligence
Cloud computing
IoT
Fog computing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,782
2,773
0.997
* Total Citation Counts Rankings
Ranking Based On Selection: 3
Research led education. Specific research seek to study novel biologically active products from food-water systems and their bio
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
974
448
0.460
* Total Citation Counts Rankings
Ranking Based On Selection: 4
Phytochemistry
bioactivity
plant foods
new drugs
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
922
467
0.507
* Total Citation Counts Rankings
Ranking Based On Selection: 5
Limnology- zooplankton
macrophytes and fisheries
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
786
526
0.669
* Total Citation Counts Rankings
Ranking Based On Selection: 6
Operaions Management
Project Management
Management Sciences
Research Methods
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
503
345
0.686
* Total Citation Counts Rankings
Ranking Based On Selection: 7
Education
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
489
324
0.663
* Total Citation Counts Rankings
Ranking Based On Selection: 8
Food Security
Gender
Crime
Health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
455
287
0.631
* Total Citation Counts Rankings
Ranking Based On Selection: 9
Service Learning
Global Citizenship Ed
Ed in Emergencies
Multicultural Ed
Ed for Sustainable Dev
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
402
280
0.697
* Total Citation Counts Rankings
Ranking Based On Selection: 10
Crops
soil and water
agricultural educ & extension
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
393
99
0.252
* Total Citation Counts Rankings
Ranking Based On Selection: 11
Medical Microbiology
Infectious diseases
AMR
Nanobiotechnology
Drug discovery
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
359
238
0.663
* Total Citation Counts Rankings
Ranking Based On Selection: 12
trans boundary natural resource use dynamics and conflict
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
356
200
0.562
* Total Citation Counts Rankings
Ranking Based On Selection: 13
Learners with Autism
Intellectual Disabilities
ADHD
Inclusive Education
Disability Studies
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
328
295
0.899
* Total Citation Counts Rankings
Ranking Based On Selection: 14
Environmental science
Forest Industries Technology
Bioenergy
Climate Change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
319
191
0.599
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Education Management
Education Planning
Economics of Education
Financing of Education
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
307
169
0.550
* Total Citation Counts Rankings
Ranking Based On Selection: 16
Academic research
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
299
209
0.699
* Total Citation Counts Rankings
Ranking Based On Selection: 17
memory
identity
heritage studies
slave studies
archaeology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
283
135
0.477
* Total Citation Counts Rankings
Ranking Based On Selection: 18
heritage studies
memory
identity
slavery
arcahaeology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
283
135
0.477
* Total Citation Counts Rankings
Ranking Based On Selection: 19
Aquaculture
Aquaponics
Aquatic Science
Phytoremediation
Water quality management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
280
233
0.832
* Total Citation Counts Rankings
Ranking Based On Selection: 20
Agronomy of forages
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
279
190
0.681
* Total Citation Counts Rankings
Ranking Based On Selection: 21
Supply Chain Management
Transport Management and Information Communication Technology.
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
274
206
0.752
* Total Citation Counts Rankings
Ranking Based On Selection: 22
Geographies of peace and conflict
urban space
gender
livelihoods
geography of power
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
261
114
0.437
* Total Citation Counts Rankings
Ranking Based On Selection: 23
HRM
diversity and inclusivity
organizational behaviour
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
244
163
0.668
* Total Citation Counts Rankings
Ranking Based On Selection: 24
Research Methods
Mathematics Education
Law and Education
Law and Social Justice
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
225
192
0.853
* Total Citation Counts Rankings
Ranking Based On Selection: 25
Nonlinear Photonics
Cavity CQED'S
Nuclear Physics
First Principle Calculations
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
218
124
0.569
* Total Citation Counts Rankings
Rankings
284,081
144
1
Ranking Based On Selection: 1
John S. Akama
Kisii University
Kisii, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,576
976
0.273
Planning
Wildlife Management
Tourism Management
African Development
Culture
* Total Citation Counts Rankings
Rankings
349,910
190
2
Ranking Based On Selection: 2
Vincent Omollo Nyangaresi
Kisii University
Kisii, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,782
2,773
0.997
Cellular networks security
Artificial Intelligence
Cloud computing
IoT
Fog computing
* Total Citation Counts Rankings
Rankings
697,733
704
3
Ranking Based On Selection: 3
Anakalo Alfred Shitandi
Kisii University
Kisii, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
974
448
0.460
Research led education. Specific research seek to study novel biologically active products from food-water systems and their bio
* Total Citation Counts Rankings
Rankings
717,449
738
4
Ranking Based On Selection: 4
Bethwell Owuor
Kisii University
Kisii, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
922
467
0.507
Phytochemistry
bioactivity
plant foods
new drugs
* Total Citation Counts Rankings
Rankings
773,925
845
5
Ranking Based On Selection: 5
Reuben Omondi
Kisii University
Kisii, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
786
526
0.669
Limnology- zooplankton
macrophytes and fisheries
* Total Citation Counts Rankings
Rankings
929,148
1,164
6
Ranking Based On Selection: 6
Christopher Ngacho
Kisii University
Kisii, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
503
345
0.686
Operaions Management
Project Management
Management Sciences
Research Methods
* Total Citation Counts Rankings
Rankings
940,879
1,178
7
Ranking Based On Selection: 7
John M. Onyango Yambo
Kisii University
Kisii, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
489
324
0.663
* Total Citation Counts Rankings
Rankings
970,466
1,235
8
Ranking Based On Selection: 8
Peter Gutwa Oino
Kisii University
Kisii, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
455
287
0.631
Food Security
Gender
Crime
Health
* Total Citation Counts Rankings
Rankings
1,021,123
1,323
9
Ranking Based On Selection: 9
Titus O. Pacho
Kisii University
Kisii, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
402
280
0.697
Service Learning
Global Citizenship Ed
Ed in Emergencies
Multicultural Ed
Ed for Sustainable Dev
* Total Citation Counts Rankings
Rankings
1,030,805
1,335
10
Ranking Based On Selection: 10
Samson N. Maobe
Kisii University
Kisii, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
393
99
0.252
Crops
soil and water
agricultural educ & extension
* Total Citation Counts Rankings
Rankings
1,066,769
1,401
11
Ranking Based On Selection: 11
Eric Omori Omwenga
Kisii University
Kisii, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
359
238
0.663
Medical Microbiology
Infectious diseases
AMR
Nanobiotechnology
Drug discovery
* Total Citation Counts Rankings
Rankings
1,070,401
1,412
12
Ranking Based On Selection: 12
Edmond Were
Kisii University
Kisii, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
356
200
0.562
* Total Citation Counts Rankings
Rankings
1,103,265
1,467
13
Ranking Based On Selection: 13
Josephine Oranga|Josephine Orangah
Kisii University
Kisii, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
328
295
0.899
Learners with Autism
Intellectual Disabilities
ADHD
Inclusive Education
Disability Studies
* Total Citation Counts Rankings
Rankings
1,115,433
1,495
14
Ranking Based On Selection: 14
James Onchieku|James M. Onchieku - Chief Research Officer KEFRI (1989 to 2014)
Kisii University
Kisii, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
319
191
0.599
Environmental science
Forest Industries Technology
Bioenergy
Climate Change
* Total Citation Counts Rankings
Rankings
1,131,418
1,545
15
Ranking Based On Selection: 15
Kennedy Getange
Kisii University
Kisii, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
307
169
0.550
Education Management
Education Planning
Economics of Education
Financing of Education
* Total Citation Counts Rankings
Rankings
1,142,145
1,585
16
Ranking Based On Selection: 16
Andrew Songoro Nyangau
Kisii University
Kisii, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
299
209
0.699
* Total Citation Counts Rankings
Rankings
1,166,011
1,659
17
Ranking Based On Selection: 17
Herman Kiriama
Kisii University
Kisii, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
283
135
0.477
memory
identity
heritage studies
slave studies
archaeology
* Total Citation Counts Rankings
Rankings
1,166,011
1,659
17
Ranking Based On Selection: 18
Hermann Kiriamah
Kisii University
Kisii, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
283
135
0.477
* Total Citation Counts Rankings
Rankings
1,170,004
1,672
19
Ranking Based On Selection: 19
Zipporah Gichana
Kisii University
Kisii, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
280
233
0.832
Aquaculture
Aquaponics
Aquatic Science
Phytoremediation
Water quality management
* Total Citation Counts Rankings
Rankings
1,171,779
1,681
20
Ranking Based On Selection: 20
Evans Basweti
Kisii University
Kisii, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
279
190
0.681
* Total Citation Counts Rankings
Rankings
1,179,151
1,707
21
Ranking Based On Selection: 21
Enock Musau|Enock Musau Gideon, E MUSAU, EG MUSAU
Kisii University
Kisii, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
274
206
0.752
Supply Chain Management
Transport Management and Information Communication Technology.
* Total Citation Counts Rankings
Rankings
1,200,612
1,787
22
Ranking Based On Selection: 22
Romborah Simiyu
Kisii University
Kisii, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
261
114
0.437
Geographies of peace and conflict
urban space
gender
livelihoods
geography of power
* Total Citation Counts Rankings
Rankings
1,228,899
1,892
23
Ranking Based On Selection: 23
Stella Moraa Omari
Kisii University
Kisii, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
244
163
0.668
HRM
diversity and inclusivity
organizational behaviour
* Total Citation Counts Rankings
Rankings
1,263,271
2,030
24
Ranking Based On Selection: 24
Enock Obuba Meshack
Kisii University
Kisii, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
225
192
0.853
Research Methods
Mathematics Education
Law and Education
Law and Social Justice
* Total Citation Counts Rankings
Rankings
1,277,626
2,085
25
Ranking Based On Selection: 25
Calford Otieno
Kisii University
Kisii, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
218
124
0.569
Nonlinear Photonics
Cavity CQED'S
Nuclear Physics
First Principle Calculations