| Dr | mikail | olam | firat üniversity | Turkey | Engineering | fuels and combustion, material science | Best Researcher Award | |
| Dr | Mikail | Olam | Firat Universty | Turkey | Engineering | Fuels and combustion, material science | Best Researcher Award | |
| Assist Prof Dr | Maria Elena | Olante | Università Cattolica del Sacro Cuore | Italy | Business, Management and Accounting | Accounting | Most Reader's Article Award | |
| Dr | Olawale | Olayide | University of Ibadan | Nigeria | Agricultural and Biological Sciences | Agri-preneurshup and sustainable development | Most Reader's Article Award | |
| Mrs | Tamires | Oliveira | Federal University of Rio de Janeiro | Brazil | Agricultural and Biological Sciences | Food Science | Best Researcher Award | |
| Prof Dr | Alessandra | Oliveira | Universidade de São Paulo | Brazil | Agricultural and Biological Sciences | Engenharia de Alimentos | Best Researcher Award | |
| Mr | Ayomide | Olubaju | First Technical University Ibadan | Nigeria | Environmental Science | Geology | Research Excellence Award | bestpaperawards.com |
| Prof | Mohamed | Omar | King Fahd University | Saudi Arabia | Earth and Planetary Sciences | Petroleum Geology | Best Paper Award | |
| Prof | Mohammed | Omran | Graduate School of Business, Arab Academy for Science and Technology | Egypt | Economics, Econometrics and Finance | Financial Economics | Best Paper Award | |
| Dr | Ameer .N | Onaizah | Beijing institute of technology | Iraq | Computer Science | Computer science, artificial intelligence and deep learning | Best Researcher Award | |
| Dr | Bedel Giscard | Onana Essama | University of Ebolowa/HTTTC of Ebolowa | Cameroon | Materials Science | nonlinear dynalics in metamaterials | Best Researcher Award | |
| Mr | Philippe | Ondo Meye | Direction Générale de la Radioprotection et de la Sûreté Nucléaire, Gabon | Gabon | Physics and Astronomy | Radioprotection | Best Researcher Award | |
| Dr | Chukwuemeka | Onyimadu | UN Women | Nigeria | Economics, Econometrics and Finance | Public Financing for Climate Change | Most Reader's Article Award | |
| Dr | Poh Choon | Ooi | Institute of Microengineering and Nanoelectronics, The National University of Malaysia | Malaysia | Energy | Piezoelectric Energy Harvester | Best Researcher Award | |
| Dr | Cheen Sean | Oon | Monash University Malaysia | Malaysia | Engineering | Mechanical Engineering | Best Researcher Award | |
| Assoc. Prof. Dr. | Şenol | Orakcı | AKSARAY UNIVERSITY | Turkey | Social Sciences | Education | Best Researcher Award | bestpaperawards.com |
| Mr | Boris | Oreshkin | Amazon | Canada | Energy | Electricity load forecasting | Most Reader's Article Award | |
| Dr | Kelly | Oriakhi | University of Kentucky | United States | Biochemistry, Genetics and Molecular Biology | Metabolic diseases | Best Researcher Award | |
| Dr | Juan Carlos | Ortega-Bravo | Center for Water Management and Technologies, University of The Frontier | Chile | Environmental Science | Water recovery | Best Researcher Award | |
| Prof | Ludmila | Osadchuk | Federal Research Center ‘Institute of Cytology and Genetics’, The Siberian Branch of the Russian Academy of Sciences | Russia | Agricultural and Biological Sciences | Reproductive Physiology and Genetics | Most Reader's Article Award | |