| Dr | OKOA | SIMILE | University of Dar es Salaam | Tanzania | Arts and Humanities | LANGUAGE EDUCATION | Best Researcher Award | View Profile |
| Dr | Oleg | Shatursky | Palladin Institute of Biochemistry, National Academy of Science of Ukraine | Ukraine | Biochemistry, Genetics and Molecular Biology | Toxinology | Best Researcher Award | View Profile |
| Prof | olga | Lage | University of Porto | Portugal | Immunology and Microbiology | Bioatividade | Women Researcher Award | View Profile |
| Dr | Oliver | Kovacs | Department of Economics and International Economics, University of Public Service, Budapest, Hungary | Hungary | Social Sciences | degrowth, industrial policy | Best Researcher Award | View Profile |
| Dr | Olukayode | Bakare | School of Govdernment and International Affairs, Durham University | United Kingdom | Social Sciences | Sub-Saharan African Politics, International Relations, Democracy, Development, International Organizations, Peace and Security | Excellence in Research | View Profile |
| Dr | Oluwasegun | Aremu | University College Hospital, Ibadan, Nigeria | Nigeria | Medicine and Dentistry | Spine Surgery, Trauma | Best Researcher Award | View Profile |
| Dr | Omer | Dad | Hazrara University , Mansehra , Pakistan | Pakistan | Agricultural and Biological Sciences | Zoology | Young Scientist Award | View Profile |
| Dr | OMER HASSAN ALI | MAHFOODH | Universiti Sains Malaysia | Malaysia | Arts and Humanities | Language educatiion and AI | Excellence in Research Award | View Profile |
| Dr | Omid | Rahmani | Shahrood University of Technology | Iran | Engineering | Highway Engineering, Road Safety, Driving Behavior | Best Researcher Award | View Profile |
| Dr | Omid | Yeganeh | Islamic Azad University | Iran | Immunology and Microbiology | Antibody, Target proteins | Best Scholar Award | View Profile |
| Mr | onesme | nzasabayezu | Gandhi Institute of Technology and Management | Rwanda | Other | Poverty alleviation | Best Researcher Award | View Profile |
| Mr | Onyekachi | Onuoha | University of Calabar, Calabar, Nigeria | Nigeria | Arts and Humanities | Literature and commenoration | Best Researcher Award | View Profile |
| Dr | Orelien | BOUPDA | Université Douala/ENSPD | Cameroon | Energy | Thermique et Energie | Best Researcher Award | View Profile |
| Dr | Orit | Jacobson | NIH | United States | Other | Radiochemistry/Molecular Imaging | Best Researcher Award | View Profile |
| Dr | Orjon | Rroji | European University of Tirana | Albania | Neuroscience | Brain recovery | Best Researcher Award | View Profile |
| Prof | Orlando | Auciello | University of Texas at Dallas | United States | Materials Science | Bioengineering | Best Researcher Award | View Profile |
| Prof | Osama | Gouda | Cairo University | Egypt | Engineering | Electrical Engineering | Best Researcher Award | View Profile |
| Assoc. Prof. Dr | OSMAN | BULUT | ISTANBUL TECHNICAL UNIVERSITY | Turkey | Engineering | Experimental and Analytical Anlaysis | Best Researcher Award | View Profile |
| Dr | Oswaldo | Aguilar | Universidad del Valle | Colombia | Medicine and Dentistry | Imagen cardiaca | Best Researcher Award | View Profile |
| Dr | ottis | mubaiwa | University of Portsmouth | United Kingdom | Social Sciences | Gender/ FGM | Best Researcher Award | View Profile |