| Dr | omkar | kulkarni | Dr. Vishwanath Karad MIT World Peace University | India | Engineering | Mechanical | Young Scientist Award | youngscientistawards.com |
| Assist Prof Dr | Ömür | Acet | Tarsus University | Turkey | Chemistry | Biochemistry | Best Researcher Award | |
| Dr | Omvir | Singh | IISc | India | Chemistry | Sustainable Biomass upgradation | Young Scientist Award | youngscientistawards.com |
| Prof | Omyma | Abd Allah | Faculty of Science, Sohag university | Egypt | Chemistry | Organic chemistry | Best Researcher Award | youngscientistawards.com |
| Mr | Onur | Canpolat | Sakarya University | Turkey | Engineering | Structural Equation Model, Industry 4.0 | Best Researcher Award | |
| Assist Prof Dr | Onur | ELMA | Canakkale 18 Mart University | Turkey | Energy | Electrical Energy, Demand Response, Energy Managament | Best Researcher Award | |
| Mr | Onur | Baran | City, University of London | United Kingdom | Engineering | Aerospace | Best Researcher Award | |
| Dr | Opeyemi | Osanaiye | Nile University of Nigeria | Nigeria | Engineering | Data Communication/Cyber Security/Machine Learning | Best Researcher Award | |
| Dr | Orestis | Stavrakidis-Zachou | Hellenic Center for Marine Research | Greece | Agricultural and Biological Sciences | Aquaculture | Best Researcher Award | youngscientistawards.com |
| Dr | Orit | Jacobson Weiss | NIH | United States | Other | Radiochemistry/Molecular Imaging | Women Researcher Award | youngscientistawards.com |
| Dr | Osama | Hussein | Agricultural research center -QCAP | Egypt | Chemistry | Analytical chemistry | Best Researcher Award | |
| Dr | Oscar | Ugarteche | Instituto de Investigaciones Económicas UNAM | Mexico | Economics, Econometrics and Finance | International finance | Best Researcher Award | |
| Dr | Oscar | Ugarteche | Instituto de Investigaciones Economicas UNAM | Mexico | Economics, Econometrics and Finance | international finance | Best Researcher Award | |
| Dr | OSCAR | GUADARRAMA PÉREZ | Universidad Politécnica del Estado de Morelos | Mexico | Engineering | Environmental Technology | Young Scientist Award | |
| Mr | Oshneck | Mupepi | Midlands state university | Zimbabwe | Environmental Science | Remote sensing | Best Researcher Award | |
| Dr | Osvaldo | Contreras | Victor Chang Cardiac Research Institute | Australia | Biochemistry, Genetics and Molecular Biology | Heart Development and Stem Cells | Best Researcher Award | youngscientistawards.com |
| Prof. Dr | Oualid | Hamdaoui | King Saud University | Saudi Arabia | Engineering | Chemical Engineering | Best Researcher Award | |
| Ms | Oumkeltoum | Mezilet | Elaboration and Characterization Physical Mechanics and Metallurgical of Materials (ECP3M) Laboratory, Abdelhamid Ibn Badis University | Algeria | Materials Science | Materials Physics | Young Scientist Award | |
| Mrs | Ouni | Selma | Faculty of Economics and Management of Sfax | Tunisia | Economics, Econometrics and Finance | Economics | Women Researcher Award | |
| Assist Prof Dr | Ourania | Kotsiou | University of Thessaly | Greece | Nursing and Health Professions | Airways Disease and Psychopathology: Extensions and Clinical Implications | Best Researcher Award | youngscientistawards.com |