| Prof | Soon-Jae | Lee | University of Lausanne & African Genome Center | Switzerland | Agricultural and Biological Sciences | Mycorrhizal Symbiosis | Research Excellence Award | View Profile |
| Dr | Els | Leclercq | Delft University of Technology | Netherlands | Other | Urbanism | Most Cited Article Award | |
| Mr | Phuoc-Cuong | Le | The University of Danang-University of Science and Technology | Vietnam | Agricultural and Biological Sciences | Environmental Sciences | Best Researcher Award | |
| Dr | Wan | Le | China University of Geosciences | China | Earth and Planetary Sciences | geology and geochemistry | Best Researcher Award | |
| Dr | NINA | LAZAR | Vellore Institute of Technology | India | Other | Architecture/Sustainability Assessment of Buildings | Most Reader's Article Award | View Profile |
| Prof | Sharon | Lawn | Flinders University | Australia | Other | Mental Health | Best Researcher Award | |
| Dr | Colin | Law | Singapore Institute of Technology | Singapore | Other | Air Transport | Best Researcher Award | |
| Prof | Franziska | Lautenschläger | Saarland University | Germany | Agricultural and Biological Sciences | Biophysics | Best Research Article Award | |
| Prof Dr | Robert | Laurini | KSI | United States | Computer Science | Knowledge Technologies for Urban Planning | Most Cited Article Award | |
| Dr | Sau Mui, Adela | Lau | The University of Hong Kong | Hong Kong | Decision Sciences | Artificial Intelligence and Applications | Best Researcher Award | |
| Mrs | FRANCESCA | LATINO | Pegaso University | Italy | Other | Human Health | Most Cited Article Award | View Profile |
| Mr | Sohaib | Latif | Anhui University of Science and Technology | China | Computer Science | Internet of Things, Machine Learning | Most Cited Article Award | |
| Dr | Devdas | Lata | Central University of Jharkhand, ranchi, India | India | Engineering | Hydrogen based Dual fuel Diesel Engine | Best Researcher Award | |
| Prof | Fabian | Lanuza | University of Barcelona | Spain | Health Professions | Nutrition | Most Tweeted Article Award | |
| Prof | Anna | Lankoff | Institute of Nuclear Chemistry and Technology, Centre for Radiobiology and Biological Dosimetry | Poland | Biochemistry, Genetics and Molecular Biology | Nanotoxicology, DNA damage and repair | Best Researcher Award | View Profile |
| Prof | Karl | Landsteiner | Consejo Superior de Investigaciones Cientificas | Spain | Physics and Astronomy | Theoretical Physics | Best Researcher Award | View Profile |
| Dr | Claudia | Landi | University of Siena | Italy | Environmental Science | Proteomics | Best Researcher Award | |
| Mr | ANIT | LAMICHHANE | Manmohan Memorial Institute of Health Sciences | Nepal | Biochemistry, Genetics and Molecular Biology | Clinical Biochemistry | Best Researcher Award | |
| Assist. Prof. Dr | Batablinlè | LAMBONI | Ecole Normale supérieure-Université de Lomé | Togo | Environmental Science | eau Energie renouvelable | Best Researcher Award | View Profile |
| Dr | Anthony | Lamanna | Arizona State University | United States | Engineering | Construction Management | Most Reader's Article Award | View Profile |