Citation Rankings
Highly Cited Researchers
Highly Cited Researchers 309 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
Disease vectors
Ecology
Infectious Diseases
Planetary Health
Climate Chang
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,045
2,986
0.738
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* Total Citation Counts Rankings
Ranking Based On Selection: 2
Groundwater
Climate change
Stable isotopes
Medical Geology
Biogeochemistr
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,084
2,444
0.792
* Total Citation Counts Rankings
Ranking Based On Selection: 3
chemistr
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,496
1,134
0.454
* Total Citation Counts Rankings
Ranking Based On Selection: 4
Condensed Matter Physics
Material Science
Water Science Technolog
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,086
2,072
0.993
* Total Citation Counts Rankings
Ranking Based On Selection: 5
Aquatic Sciences
Coral Reef Management
Mangrove Ecosystem
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,880
1,299
0.691
* Total Citation Counts Rankings
Ranking Based On Selection: 6
Separation Science Technologies
Methods Development in Analytical Chemistry
Adsorption Science Technologie
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,885
830
0.440
* Total Citation Counts Rankings
Ranking Based On Selection: 7
Ecology
Biological conservatio
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,604
1,196
0.746
* Total Citation Counts Rankings
Ranking Based On Selection: 8
knowledge management
information science
communication
public relations
web publishin
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,536
1,119
0.729
* Total Citation Counts Rankings
Ranking Based On Selection: 9
water and wastewater managemen
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,277
1,268
0.993
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* Total Citation Counts Rankings
Ranking Based On Selection: 10
Space Physic
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
972
605
0.622
* Total Citation Counts Rankings
Ranking Based On Selection: 11
Insect Ecology
Medical Entomology
Ecology
Resource Conservatio
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
810
368
0.454
* Total Citation Counts Rankings
Ranking Based On Selection: 12
Composite Materials
Casting and Solidification
Energ
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
804
455
0.566
* Total Citation Counts Rankings
Ranking Based On Selection: 13
Pharmaceutical Sciences and Neuroscienc
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
802
343
0.428
* Total Citation Counts Rankings
Ranking Based On Selection: 14
Food Science and Technolog
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
735
428
0.582
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Analytical Chemistry
Chemical Security
Biosensor
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
719
186
0.259
* Total Citation Counts Rankings
Ranking Based On Selection: 16
Geoenvironmental Engineering - By-products utilization (Sustainable Materials
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
710
442
0.623
* Total Citation Counts Rankings
Ranking Based On Selection: 17
Materials Scienc
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
656
489
0.745
* Total Citation Counts Rankings
Ranking Based On Selection: 18
parasitology
immunology
schistosomiasi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
638
191
0.299
* Total Citation Counts Rankings
Ranking Based On Selection: 19
Computational Electromagnetics
Antenna Design
Microwave Engineering Applications
EMC/EMI Problem
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
650
539
0.829
* Total Citation Counts Rankings
Ranking Based On Selection: 20
Information and Knowledge Mangemen
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
594
247
0.416
* Total Citation Counts Rankings
Ranking Based On Selection: 21
condensed matter physic
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
557
530
0.952
* Total Citation Counts Rankings
Ranking Based On Selection: 22
Nanomedicine
Electrochemistry
pharmacometrics
pharmacokinetic
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
529
281
0.531
* Total Citation Counts Rankings
Ranking Based On Selection: 23
WATER & ENVIRONMENTAL ENGINEERING
WASTEWATER MODELLING
HYDROLOG
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
528
286
0.542
* Total Citation Counts Rankings
Ranking Based On Selection: 24
energy engineering
helicopter aeromechhanic
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
514
366
0.712
* Total Citation Counts Rankings
Ranking Based On Selection: 25
Applied Ecolog
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
462
160
0.346
* Total Citation Counts Rankings
Rankings
262,536
130
1
Ranking Based On Selection: 1
Gabriel O Dida
Technical University of Kenya
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,045
2,986
0.738
Disease vectors
Ecology
Infectious Diseases
Planetary Health
Climate Chang
* Total Citation Counts Rankings
Rankings
330,794
170
2
Ranking Based On Selection: 2
Lydia A Olaka
Technical University of Kenya
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,084
2,444
0.792
Groundwater
Climate change
Stable isotopes
Medical Geology
Biogeochemistr
* Total Citation Counts Rankings
Rankings
391,200
223
3
Ranking Based On Selection: 3
Joseph Lalah
Technical University of Kenya
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,496
1,134
0.454
* Total Citation Counts Rankings
Rankings
446,271
280
4
Ranking Based On Selection: 4
Robert Onyancha
Technical University of Kenya
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,086
2,072
0.993
Condensed Matter Physics
Material Science
Water Science Technolog
* Total Citation Counts Rankings
Rankings
480,082
332
6
Ranking Based On Selection: 5
Lewis Sitoki
Technical University of Kenya
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,880
1,299
0.691
Aquatic Sciences
Coral Reef Management
Mangrove Ecosystem
* Total Citation Counts Rankings
Rankings
479,258
330
5
Ranking Based On Selection: 6
Paul M. Shiundu
Technical University of Kenya
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,885
830
0.440
Separation Science Technologies
Methods Development in Analytical Chemistry
Adsorption Science Technologie
* Total Citation Counts Rankings
Rankings
533,470
418
7
Ranking Based On Selection: 7
Ayub Mo Oduor
Technical University of Kenya
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,604
1,196
0.746
Ecology
Biological conservatio
* Total Citation Counts Rankings
Rankings
548,199
440
8
Ranking Based On Selection: 8
Tom Kwanya
Technical University of Kenya
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,536
1,119
0.729
knowledge management
information science
communication
public relations
web publishin
* Total Citation Counts Rankings
Rankings
612,792
534
9
Ranking Based On Selection: 9
Joan Mwihaki Nyika
Technical University of Kenya
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,277
1,268
0.993
* Total Citation Counts Rankings
Rankings
710,700
719
10
Ranking Based On Selection: 10
Paul Baki
Technical University of Kenya
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
972
605
0.622
Is Your University Ready for the Future?
Compare your institution’s global, national, and city-level ranking with its 20 closest competitors and set strategic goals.
Gain insights from detailed performance analyses of scientists across 13 major disciplines, identify your strengths, improve weaknesses, and gain a competitive edge.. Check Your Free Sample Performance Analysis
* Total Citation Counts Rankings
Rankings
775,741
842
11
Ranking Based On Selection: 11
Imbahale S. Susan
Technical University of Kenya
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
810
368
0.454
Insect Ecology
Medical Entomology
Ecology
Resource Conservatio
* Total Citation Counts Rankings
Rankings
778,231
846
12
Ranking Based On Selection: 12
Alex Muumbo
Technical University of Kenya
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
804
455
0.566
Composite Materials
Casting and Solidification
Energ
* Total Citation Counts Rankings
Rankings
779,169
848
13
Ranking Based On Selection: 13
Alfred Orina Isaac
Technical University of Kenya
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
802
343
0.428
Pharmaceutical Sciences and Neuroscienc
* Total Citation Counts Rankings
Rankings
809,233
911
14
Ranking Based On Selection: 14
Mercy Mwaniki
Technical University of Kenya
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
735
428
0.582
Food Science and Technolog
* Total Citation Counts Rankings
Rankings
817,180
932
15
Ranking Based On Selection: 15
Austin Ochieng Aluoch
Technical University of Kenya
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
719
186
0.259
Analytical Chemistry
Chemical Security
Biosensor
* Total Citation Counts Rankings
Rankings
821,227
943
16
Ranking Based On Selection: 16
George Do Okwadha
Technical University of Kenya
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
710
442
0.623
Geoenvironmental Engineering - By-products utilization (Sustainable Materials
* Total Citation Counts Rankings
Rankings
848,414
1,009
17
Ranking Based On Selection: 17
George Amolo
Technical University of Kenya
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
656
489
0.745
* Total Citation Counts Rankings
Rankings
858,209
1,030
19
Ranking Based On Selection: 18
Dorcas Yole
Technical University of Kenya
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
638
191
0.299
parasitology
immunology
schistosomiasi
* Total Citation Counts Rankings
Rankings
851,457
1,012
18
Ranking Based On Selection: 19
Dominic Bernard Onyango Konditi
Technical University of Kenya
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
650
539
0.829
Computational Electromagnetics
Antenna Design
Microwave Engineering Applications
EMC/EMI Problem
* Total Citation Counts Rankings
Rankings
882,831
1,069
20
Ranking Based On Selection: 20
Joseph Kiplang'at
Technical University of Kenya
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
594
247
0.416
Information and Knowledge Mangemen
* Total Citation Counts Rankings
Rankings
905,907
1,115
21
Ranking Based On Selection: 21
Michael O. Atambo
Technical University of Kenya
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
557
530
0.952
* Total Citation Counts Rankings
Rankings
926,652
1,150
22
Ranking Based On Selection: 22
Florence A Oloo
Technical University of Kenya
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
529
281
0.531
Nanomedicine
Electrochemistry
pharmacometrics
pharmacokinetic
* Total Citation Counts Rankings
Rankings
927,448
1,151
23
Ranking Based On Selection: 23
George Kirumba
Technical University of Kenya
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
528
286
0.542
WATER & ENVIRONMENTAL ENGINEERING
WASTEWATER MODELLING
HYDROLOG
* Total Citation Counts Rankings
Rankings
938,397
1,167
24
Ranking Based On Selection: 24
Sameer Hameer
Technical University of Kenya
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
514
366
0.712
energy engineering
helicopter aeromechhanic
* Total Citation Counts Rankings
Rankings
983,468
1,244
25
Ranking Based On Selection: 25
Do Ojwang And No Oguge
Technical University of Kenya
Nairobi, Kenya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
462
160
0.346