Citation Rankings (Highly Cited Researchers) and the list of the most cited and influential researchers cover a wide range of scientific fields, spanning 197 main and sub-disciplines, as well as the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings, offering a unique service. Additionally, the list without CERN, Statistical Data, etc., provided exclusively by “AD Scientific Index”, is part of our effort to balance the situation created by CERN and researchers with statistical data, who have an advantage over others, especially those in the social and humanities fields. There should be new regulations for multi-author and CERN papers. Citation lists also reveal many rule violations and unethical practices. See also for more specific citation analyses: 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
Open
distance and elearning
Global Burden of Diseases
Ecology and environmental conservatin
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
95,873
84,155
0.878
* Total Citation Counts Rankings
Ranking Based On Selection :2
agroforestry
ecology
biogeography
biodiversity
climate change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
85,384
58,194
0.682
* Total Citation Counts Rankings
Ranking Based On Selection :3
Parasitology
Global burden of diseases
Neglected parasitic diseases in Tropics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
75,854
72,030
0.950
* Total Citation Counts Rankings
Ranking Based On Selection :4
Malaria
Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
68,570
16,115
0.235
* Total Citation Counts Rankings
Ranking Based On Selection :5
Global Mental Health
Health Services Research
Health Disparities
Child & Adolescent MH
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
57,609
54,896
0.953
* Total Citation Counts Rankings
Ranking Based On Selection :6
agriculture
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
50,074
27,714
0.553
* Total Citation Counts Rankings
Ranking Based On Selection :7
roots
agroforestry
ecosystem services
landscape
water
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
46,521
17,999
0.387
* Total Citation Counts Rankings
Ranking Based On Selection :8
ethnoecology
fungi ecology
biodiversity conservation
landscape restoration
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
41,248
25,585
0.620
* Total Citation Counts Rankings
Ranking Based On Selection :9
Cardiothoracic surgery
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,634
25,326
0.855
* Total Citation Counts Rankings
Ranking Based On Selection :10
Chemical Ecology
Insect Behavior
Habitat Management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,494
8,353
0.452
* Total Citation Counts Rankings
Ranking Based On Selection :11
Applied micro-econometrics
multiple technologica innovaiton bundles adoption and impact assessment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,855
12,648
0.708
* Total Citation Counts Rankings
Ranking Based On Selection :12
Environmental Health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,114
9,524
0.557
* Total Citation Counts Rankings
Ranking Based On Selection :13
Agroforestry
Biofuel
Rice
agronomy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,069
5,374
0.315
* Total Citation Counts Rankings
Ranking Based On Selection :14
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,725
9,453
0.601
* Total Citation Counts Rankings
Ranking Based On Selection :15
programming
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,751
1,824
0.124
* Total Citation Counts Rankings
Ranking Based On Selection :16
agriculture
agroecology
agroforestry
food security
ecosystem services
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,095
6,997
0.496
* Total Citation Counts Rankings
Ranking Based On Selection :17
Livestock
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,011
5,422
0.387
* Total Citation Counts Rankings
Ranking Based On Selection :18
Tropical medicine
HIV/AIDS
research ethics
clinical ethics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,339
4,540
0.340
* Total Citation Counts Rankings
Ranking Based On Selection :19
Primary Health Care
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,049
1,750
0.134
* Total Citation Counts Rankings
Ranking Based On Selection :20
Basic Education
Science Education
Gender and Development
Quality Education
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,312
4,900
0.433
* Total Citation Counts Rankings
Ranking Based On Selection :21
Development Economics
Trade
Entrepreneurship and Governance
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,088
5,125
0.462
* Total Citation Counts Rankings
Ranking Based On Selection :22
Paediatrics
HIV
Epidemiology
Child Health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,801
2,640
0.244
* Total Citation Counts Rankings
Ranking Based On Selection :23
Agroforestry
Restoration
Tree Conservation. Integrated Tree Seed Systems
Food Trees
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,372
6,364
0.614
* Total Citation Counts Rankings
Ranking Based On Selection :24
Public Health
Health systems
Maternal and Child Health
Non communicable diseases
HIV
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,320
7,014
0.680
* Total Citation Counts Rankings
Ranking Based On Selection :25
Extension
marketing
agroforestry
natural resources management
participatory research
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,072
3,650
0.362
Peter N. Keiyoro
University of Nairobi
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
95,873
84,155
0.878
Open
distance and elearning
Global Burden of Diseases
Ecology and environmental conservatin
Kindt, Roeland
World Agroforestry (ICRAF)
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
85,384
58,194
0.682
agroforestry
ecology
biogeography
biodiversity
climate change
Josephine Ngunjiri
University of Embu
Embu,, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
75,854
72,030
0.950
Parasitology
Global burden of diseases
Neglected parasitic diseases in Tropics
Robert W Snow
Kenya Medical Research Institute
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
68,570
16,115
0.235
Manasi Kumar
University of Nairobi
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
57,609
54,896
0.953
Global Mental Health
Health Services Research
Health Disparities
Child & Adolescent MH
Philip Thornton
International Livestock Research Institute (ILRI)
Addis Ababa, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
50,074
27,714
0.553
Meine Van Noordwijk|Noordwijk, Meine van, van Noordwijk, Meine
World Agroforestry (ICRAF)
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
46,521
17,999
0.387
roots
agroforestry
ecosystem services
landscape
water
Jianchu Xu
World Agroforestry (ICRAF)
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
41,248
25,585
0.620
ethnoecology
fungi ecology
biodiversity conservation
landscape restoration
Stephen Ogendo
Maseno University
Maseno, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,634
25,326
0.855
Cardiothoracic surgery
Zeyaur R Khan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,494
8,353
0.452
Chemical Ecology
Insect Behavior
Habitat Management
Menale Kassie
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,855
12,648
0.708
Applied micro-econometrics
multiple technologica innovaiton bundles adoption and impact assessment
Wilkister Nyaora Moturi
Egerton University
Njoro, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,114
9,524
0.557
Virendra Pal Singh
World Agroforestry (ICRAF)
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,069
5,374
0.315
Agroforestry
Biofuel
Rice
agronomy
Mark Van Wijk
International Livestock Research Institute (ILRI)
Addis Ababa, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,725
9,453
0.601
Shaka Kevin
Zetech University
Ruiru, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,751
1,824
0.124
Fergus Sinclair
World Agroforestry (ICRAF)
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,095
6,997
0.496
agriculture
agroecology
agroforestry
food security
ecosystem services
Michael Bluemmel
International Livestock Research Institute (ILRI)
Addis Ababa, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,011
5,422
0.387
Walter Jaoko
University of Nairobi
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,339
4,540
0.340
Tropical medicine
HIV/AIDS
research ethics
clinical ethics
Elizabeth Ngugi
University of Nairobi
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,049
1,750
0.134
John Orodho
Kenyatta University
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,312
4,900
0.433
Basic Education
Science Education
Gender and Development
Quality Education
Paul Kamau
University of Nairobi
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,088
5,125
0.462
Development Economics
Trade
Entrepreneurship and Governance
Ruth Nduati
University of Nairobi
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,801
2,640
0.244
Paediatrics
HIV
Epidemiology
Child Health
Ramni H Jamnadass
World Agroforestry (ICRAF)
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,372
6,364
0.614
Agroforestry
Restoration
Tree Conservation. Integrated Tree Seed Systems
Food Trees
Gershim Asiki
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,320
7,014
0.680
Public Health
Health systems
Maternal and Child Health
Non communicable diseases
HIV
Steven Franzel
World Agroforestry (ICRAF)
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,072
3,650
0.362
Extension
marketing
agroforestry
natural resources management
participatory research