| Dr | Spyridon | Kosionis | Department of Materials Science, School of Natural Sciences, University of Patras, Patras, Greece | Greece | Quantum Optics | Coherent Light–Matter Interactions in Quantum Dot–Plasmonic Hybrid Systems | Research Excellence Award | View Profile |
| Dr | Kouao Laurent | KOUADIO | Central South University | China | Others | Geophysics | Best Researcher Award | View Profile |
| Dr | Abdoulaye | Koura | Kwame Nkrumah University of Science and Technology | Ghana | Molecular Physics | Molecular Plant Breeding | Molecular Physics Achievement Award | View Profile |
| Dr | Alexander | Kovalev | Universität zu Kiel | Germany | Biophysics | Biomechanik, Photonik | Research Excellence Award | View Profile |
| Mr | Mohamed taieb | KRAKDIA | Research Laboratory: Proceeds, Energies, Environment and Electrical Systems (PEESE), whose ministry code is “LR18ES34”ENIG GABES TUNISIA | Tunisia | Coherent Control | microgrids | Best Researcher Award | View Profile |
| Prof | Irena | Kratochvilova | Institute of Physics AS CR | Czech Republic | Others | nuclear facilities/engineering | Women Researcher Award | |
| Prof | Sanjay | Krishna | Ohio State University | United States | Solid-State Physics | Semiconductor Infrared Detectors | Best Researcher Award | View Profile |
| Dr | VENKATESHWARAN | KRISHNASWAMI | SA RAJA PHARMACY COLLEGE | India | Laser Physics | Drug Delivery | Excellence in Research | View Profile |
| Prof Dr | Alexander | Krot | United Institute of Informatics Problems of National Academy of Sciences of Belarus | Belarus | Plasma Physics | Ionospheric plasma/planet formation | Best Researcher Award | |
| Prof | Serguei | Krouglov | University of Toronto | Canada | Astrophysics | Black holes | Best Researcher Award | View Profile |
| Prof | Sergey | Kruglov | University of Toronto | Canada | Nonlinear Optics | non-linear electrodynamics | Best Researcher Award | View Profile |
| Mr | Mmatlou | Kubyana | Stellenbosch University | South Africa | Optical Physics | Evolutionary game theory and adaptive dynamics | Best Researcher Award | View Profile |
| Dr | Mohammad Muzammil | Kudduushi | University of Alberta | Canada | Plasma Physics | Cold Plasma Technology | Best Researcher Award | View Profile |
| Assist Prof Dr | Thirumoorthy | Kulandaivel | Saveetha School of Engineering / Saveetha University | India | Atomic Physics | Materials Science | Best Researcher Award | |
| Assist. Prof. Dr | Dinesh | Kulhary | Career Point University | India | Condensed Matter Physics | Organic-inorganic hybrid perovskites | Innovative Research Award | View Profile |
| Dr | Shank | Kulkarni | Univerisity of Tennessee Knoxville | United States | Others | Hydrogen energy | Best Researcher Award | |
| Mr | ANAND | KUMAR | INDIAN INSTITUTE OF TECHNOLOGY DELHI | India | Optical Physics | Holography, Optical System Design, Biomedical Optics, Laser and Photonics, Computational Optics and Imaging and its applications | Best Researcher Award | View Profile |
| Prof Dr | Lokendra | Kumar | University of Allahabad | India | Optical Physics | Molecular Photophysics | Best Researcher Award | |
| Prof Dr | Avvaru Praveen | Kumar | Adama Science and Technology University | Ethiopia | Atomic and Molecular Spectroscopy | Atomic Molecular and Optical Physics | Outstanding Scientist Award | |
| Dr | BRIJESH | KUMAR | University of Lucknow | India | Atomic and Molecular Spectroscopy | Nanomaterials | Best Researcher Award | View Profile |