| Dr | Stuart | Kauffman | University of Pennsylvania | United States | Cosmology | Astrophysics | Best Researcher Award | scifat.com |
| Prof | Ram | Katiyar | University of Puerto Rico | United States | Choose | Materials Science | Best Researcher Award | scifat.com |
| Dr | Sankit | Kassa | Symbiosis Institute of Technology, Symbiosis International Deemed University, Pune | India | Atomic Physics | Atomic Molecular and Optical Physics | Best Researcher Award | scifat.com |
| Dr | Sitender | Kashyap | Institute of Physics of the Czech Academy of Sciences, Prague | Czech Republic | Quantum Field Theory | String Theory | Best Researcher Award | scifat.com |
| Assoc Prof Dr | Ponmurugan | Karuppiah | King Saud University | Saudi Arabia | Biophysics | Nanotechnology | Best Researcher Award | scifat.com |
| Dr | Dhanalakshmi | Karuppaiyan | Periyar Maniyammai Institute of Technology | India | Acoustics | Ultrasonics, Spectroscopy, Molecular Docking, DFT | Best Researcher Award | scifat.com |
| Dr | Mintu | Karmakar | Indian Association for the Cultivation of Science | India | Others | Statistical Mechanics | Best Researcher Award | scifat.com |
| Dr | Mounirou | KARIMOU | UNSTIM | Benin | Atomic Physics | condensed matter physics | Best Paper Award | |
| Dr | Satyabrat | Kar | DRIEMS University | India | Fluid Mechanics | MHD Flow with Heat and Mass Transfer | Best Researcher Award | scifat.com |
| Dr | SRISHAILAM | KANUGULA | SR UNIVERSITY | India | Atomic and Molecular Spectroscopy | Quantum Chemical Calculations of Bioactive Molecules | Best Researcher Award | |
| Mr | Gunasekaran | Kannan | Shizuoka University, Japan | India | Atomic Physics | Optoelectronics and Nanostructure Science | Young Scientist Award | scifat.com |
| Prof | Ali | Kamli | Jazan University | Saudi Arabia | Quantum Optics | Light-matter interactions, Quantum interference, CQED , Plasmonics , Nanophotonics, NIMM | Best Researcher Award | scifat.com |
| Prof | KHIROUNI | Kamel | Faculté des Sciences de Gabès, University of Gabes | Tunisia | Solid-State Physics | Preparation and characterization of materials • Used techniques : Czochralski and Bridgman techniques of elaboration, Plasma Enhanced Chemical Vapor Deposition, Admittance spectroscopy, Photoluminescence and photocurrent spectroscopy, optical absorption, DLTS, Hall effect, Current –voltage measurements, Differential Thermal Analysis, …. | Optical Physics Excellence Award | scifat.com |
| Assist Prof Dr | SHADAK ALEE | KAMANOOR | RM Institute of Science and Technology , Kattankulathur, Chennai | India | Optical Physics | Physics and applications of dissimilar coupled cavities | Best Researcher Award | scifat.com |
| Dr | Babar | Kamal | Northwestern Polytechnical University | China | Electromagnetism | Metasurfaces/Polarization control | Best Researcher Award | scifat.com |
| Dr | Rajathsing | Kalusulingam | Southern Federal University | Russia | Choose | Electrocatalysis | Best Researcher Award | scifat.com |
| Prof. Dr | abdulrahim | kalendar | Public Authority for Applied Education and Training | Kuwait | Fluid Mechanics | Convection Heat Transfer | Best Researcher Award | scifat.com |
| Dr | ANJALI | KAIPRATHU | JAPAN ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY | Japan | Molecular Physics | Catalysis | Women Researcher Award | |
| Dr | Snehal | Kadam | Seoul National University of Science and Technology | South Korea | Atomic Physics | Material Science | Best Researcher Award | scifat.com |
| Ms | ANUSHA | KACHU | National Institute of Technology Warangal | India | Others | Spintronics of Quantum Dots | Best Researcher Award | |