| Mrs | Noudy | Sengxeu | faculty of pharmacy | Lao People's Democratic Republic | Others | Best Researcher Award | View Profile |
| Mr | Aristophane | NSHIMIYIMANA | National Chin-Yi University of Technology | Taiwan | Others | Best Researcher Award | View Profile |
| Dr | Nargiza | Nuralieva | Shaanxi Normal University | China | Others | Best Researcher Award | View Profile |
| Prof | Nurhan | Ecemis | Izmir Institute of technology | Turkey | Earthquake Engineering | Best Researcher Award | View Profile |
| Dr | NYAMBANE | ONTITA | Central south university, china | Kenya | Environmental Microbiology | Excellence in Innovation Award | View Profile |
| Dr | Nzalalemba Serge | Kubanza | University of the Witwatersrand | South Africa | Environmental Policy and Management | Best Researcher Award | View Profile |
| Assoc. Prof. Dr | Obaid | Rehman | Lanzhou University of Finance and Economics | China | Environmental Engineering | Best Researcher Award | View Profile |
| Assoc. Prof. Dr | Odey | Alshboul | THE HASHEMITE UNIVERSITY | Jordan | Construction Management | Best Researcher Award | View Profile |
| Ms | Rania | Hamdani | University of Luxembourg | Luxembourg | Others | Best Researcher Award | View Profile |
| Dr | OLAOLU | FADUGBA | FEDERAL UNIVERSITY OF TECHNOLOGY AKURE | Nigeria | Geotechnical Engineering | Best Researcher Award | View Profile |
| Mr | Oliver | Cernero | Austin College | United States | Environmental Chemistry | Best Researcher Award | View Profile |
| Dr | Olivier | Joassard | INNOTHERA Laboratories | France | Others | Research Excellence in Civil and Environmental Engineering Award | View Profile |
| Prof | Olivier | MASSOL | CentraleSupelec - Univeristy Paris Saclay | France | Environmental Policy and Management | Best Researcher Award | View Profile |
| Ms | Oluwaseun | Fatoye | Anchor University Lagos | Nigeria | Sustainable Development | Women Researcher Award | View Profile |
| Dr | Oluwatoyin Joseph | Gbadeyan | University of KwaZulu-Natal | South Africa | Materials Science and Engineering | Best Researcher Award | View Profile |
| Dr | Omvir | Singh | Rajiv gandhi Institute of Petroleum Technology | India | Sustainable Development | Best Researcher Award | View Profile |
| Mr | Isreal | Onifade | HRI | United States | Environmental Microbiology | Excellence in Research | View Profile |
| Mr | ONTLAMETSE | MONTWEDI | NWU/NECSA | South Africa | Others | Best Scholar Award | View Profile |
| Dr | Ouyang | 静 | ZheJiang University Of Technology | China | Sustainable Development | Best Researcher Award | View Profile |
| Ms | Özün | Keskin | University of Augsburg | Germany | Others | Best Researcher Award | View Profile |