| Assoc Prof Dr | Aldo | Ometto | Universidade de São Paulo - USP | Brazil | Engineering | Engenharia de Produção - Engenharia da Sustentabilidade | Best Researcher Award | |
| Dr | Abdullah | Omar | Syrian Private university | Syria | Medicine and Dentistry | Pediatrics | Best Researcher Award | |
| Assoc Prof Dr | Bolutife | Olofinjana | Obafemi Awolowo University, Ile-Ife Nigeria | Nigeria | Physics and Astronomy | Materials Physics | Best Researcher Award | |
| Dr | Damien | Olivier | Universidad Autónoma de Baja California Sur | Mexico | Environmental Science | Ecología Marina | Best Researcher Award | View Profile |
| Dr | Julien | Olivet | Rega Institute/KU Leuven | Belgium | Biochemistry, Genetics and Molecular Biology | Epigenetics, HDAC, Cryo-EM | Young Scientist Award | View Profile |
| Prof Dr | Ricardo | Oliveira | Universidade de São Paulo/Faculdade de Ciências Farmacêuticas | Brazil | Agricultural and Biological Sciences | Microbiologia Aplicada | Best Researcher Award | |
| Dr | Keciany | Oliveira | Universidade Estadual do Ceara | Brazil | Health Professions | Nutrition | Young Scientist Award | |
| Mr | Willian | Oliveira | Federal University of Santa Catarina | Brazil | Agricultural and Biological Sciences | algae ecophysiology | Young Scientist Award | View Profile |
| Dr | Adela | Oliva Chavez | University of Wisconsin, Madison | United States | Agricultural and Biological Sciences | Entomology | Young Scientist Award | View Profile |
| Assist Prof Dr | Abdullah | Olimat | AL-balqa applied university | Jordan | Engineering | thermal science | Best Researcher Award | |
| Mr | Gamtesa | Olika | Wollega University | Ethiopia | Earth and Planetary Sciences | GIS | Best Researcher Award | |
| Mr | Ezekiel | Olatunji | University of Wolverhampton | United Kingdom | Other | Built Environment/ Disaster Risk Reduction/ Flood Resilience | Best Researcher Award | View Profile |
| Ms | Victoria Adedolapo | Olaposi | Department of Microbiology, University of Ibadan, Nigeria. | United Kingdom | Immunology and Microbiology | Enviromental Microbiology, Cellular and Molecular Biology, Biotechnology | Young Scientist Award | |
| Mr | Johnson | Oladele | Kings university | Nigeria | Biochemistry, Genetics and Molecular Biology | Toxicology, Phytoscience | Best Researcher Award | |
| Ms | GAMZE | OKUR | Niigata University | Japan | Agricultural and Biological Sciences | Food science | Young Scientist Award | |
| Dr | Damla | Okulu | Celal Bayar University | Turkey | Engineering | Thermodynamic | Young Scientist Award | View Profile |
| Dr | filiz | öktüren asri | Bati Akdeniz Agricultural Research Institute | Turkey | Agricultural and Biological Sciences | Soil Science and Plant Nutrition | Women Researcher Award | |
| Assoc. Prof. Dr | Filiz | Öktüren Asri | Bati Akdeniz Agricultural Research Institute | Turkey | Agricultural and Biological Sciences | Soil Science and Plant Nutrition | Women Researcher Award | View Profile |
| Mr | IKECHUKWU | OKORO | DAVID UMAHI FEDERAL UNIVERSITY OF HEALTH SCIENCES, UBURU, EBONYI STATE, NIGERIA | Nigeria | Biochemistry, Genetics and Molecular Biology | Medical Biochemistry | Best Researcher Award | |
| Mr | ISAAC | OKOLA | KCA UNIVERSITY | Kenya | Computer Science | ARTIFICIAL INTELLIGENCE/MACHINE LEARNING / EVOLUTIONARY ALGORITHMS | Best Researcher Award | |