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
Medical Epidemiology
Disease Modelling
Biostatistics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
121,412
110,881
0.913
* Total Citation Counts Rankings
Ranking Based On Selection :2
Technology Acceptance
Technology Management
Operations Management
PLS
Technology Adoption
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
62,296
46,311
0.743
* Total Citation Counts Rankings
Ranking Based On Selection :3
Food Technology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
47,628
21,305
0.447
* Total Citation Counts Rankings
Ranking Based On Selection :4
Reaction Engineering & Catalysis
Air Pollution and Waste Water Control Engineering
Fuel Technology
Nanoscience & Nanotechnol
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
47,381
27,050
0.571
* Total Citation Counts Rankings
Ranking Based On Selection :5
Environmental engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
40,531
24,607
0.607
* Total Citation Counts Rankings
Ranking Based On Selection :6
Food Science and Technology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
34,334
18,726
0.545
* Total Citation Counts Rankings
Ranking Based On Selection :7
Biopolymer
Biocomposite
Bioplastic
Aerogel
Nanofiber
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,224
18,458
0.632
* Total Citation Counts Rankings
Ranking Based On Selection :8
Public Health Nutrition
Nutritional Epidemiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,873
23,480
0.813
* Total Citation Counts Rankings
Ranking Based On Selection :9
rubber
plastic
recycling
blends
composites
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,443
12,001
0.437
* Total Citation Counts Rankings
Ranking Based On Selection :10
Medical Microbiology
Immunology
Science communication
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,440
9,038
0.422
* Total Citation Counts Rankings
Ranking Based On Selection :11
Pharmacy Practice Research
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,078
13,194
0.657
* Total Citation Counts Rankings
Ranking Based On Selection :12
Water Treatment Technology
Water Security Management
Waste Utilization
Water-Food Nexus
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,089
10,530
0.552
* Total Citation Counts Rankings
Ranking Based On Selection :13
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,047
6,636
0.348
* Total Citation Counts Rankings
Ranking Based On Selection :14
Chemical reaction
renewable energy
environmental engineering
oleochemical engineering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,293
10,291
0.563
* Total Citation Counts Rankings
Ranking Based On Selection :15
IoT
AI
Big Data
network
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,847
12,929
0.724
* Total Citation Counts Rankings
Ranking Based On Selection :16
Clinical
applied and Fundamental neurosciences
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,279
8,585
0.497
* Total Citation Counts Rankings
Ranking Based On Selection :17
Biodegradable polymers
polyhydroxyalkanoates
rubber biosynthesis and degradation
oil palm biomass
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,801
9,641
0.574
* Total Citation Counts Rankings
Ranking Based On Selection :18
Utilization of bioresources
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,566
9,850
0.595
* Total Citation Counts Rankings
Ranking Based On Selection :19
Polymer Composites
Impact Dynamics
Sandwich Structures
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,500
10,810
0.655
* Total Citation Counts Rankings
Ranking Based On Selection :20
Wood
non-wood
durability
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,109
9,277
0.576
* Total Citation Counts Rankings
Ranking Based On Selection :21
Analytical and Environmental Chemistry
Water pollutants
Water and wastewater treatment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,080
11,351
0.706
* Total Citation Counts Rankings
Ranking Based On Selection :22
financial economics
Asia-Pacific
energy economics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,444
10,116
0.655
* Total Citation Counts Rankings
Ranking Based On Selection :23
Programmed cell death
drug-drug and drug-herb interactions
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,976
7,194
0.480
* Total Citation Counts Rankings
Ranking Based On Selection :24
Health economics
Consumer and household economics
Environmental economics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,319
12,940
0.904
* Total Citation Counts Rankings
Ranking Based On Selection :25
Environmental Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,126
5,178
0.367
Kamarul Imran Musa
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
121,412
110,881
0.913
T Ramayah|Ramayah Thurasamy, Thurasamy, R.
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
62,296
46,311
0.743
Technology Acceptance
Technology Management
Operations Management
PLS
Technology Adoption
Cheng LH
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
47,628
21,305
0.447
Abdul Rahman Mohamed
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
47,381
27,050
0.571
Reaction Engineering & Catalysis
Air Pollution and Waste Water Control Engineering
Fuel Technology
Nanoscience & Nanotechnol
Hamidi Abdul Aziz
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
40,531
24,607
0.607
Environmental engineering
AA Karim
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
34,334
18,726
0.545
Food Science and Technology
Abdul Khalil
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,224
18,458
0.632
Leng Huat Foo
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,873
23,480
0.813
Public Health Nutrition
Nutritional Epidemiology
Hanafi Ismail
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,443
12,001
0.437
rubber
plastic
recycling
blends
composites
Khayriyyah Mohd Hanafiah
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,440
9,038
0.422
Medical Microbiology
Immunology
Science communication
Mohamed Azmi Hassali
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,078
13,194
0.657
Pharmacy Practice Research
Keng Yuen Foo
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,089
10,530
0.552
Water Treatment Technology
Water Security Management
Waste Utilization
Water-Food Nexus
Kit Lam Chan
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,047
6,636
0.348
Ahmad Zuhairi Abdullah
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,293
10,291
0.563
Chemical reaction
renewable energy
environmental engineering
oleochemical engineering
Othman Jalil
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,847
12,929
0.724
Jafri Malin Abdullah
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,279
8,585
0.497
Clinical
applied and Fundamental neurosciences
Kumar Sudesh
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,801
9,641
0.574
Biodegradable polymers
polyhydroxyalkanoates
rubber biosynthesis and degradation
oil palm biomass
Rokiah Hashim
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,566
9,850
0.595
Hazizan Md Akil
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,500
10,810
0.655
Polymer Composites
Impact Dynamics
Sandwich Structures
Othman Sulaiman
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,109
9,277
0.576
Wood
non-wood
durability
Mohd Rafatullah
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,080
11,351
0.706
Analytical and Environmental Chemistry
Water pollutants
Water and wastewater treatment
Hooi Hooi Lean
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,444
10,116
0.655
financial economics
Asia-Pacific
energy economics
Tan Mei Lan *
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,976
7,194
0.480
Andrew KG Tan
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,319
12,940
0.904
Health economics
Consumer and household economics
Environmental economics
Wan Saime Wan Ngah
Universiti Sains Malaysia
Penang, Malaysia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,126
5,178
0.367