| Dr | Özlem | Sabuncu | Near East University | Turkey | Engineering | Electrical and Electrical Engineering | Best Researcher Award | worldtopscientists.com |
| Dr | Osama | Sohaib | American University of Ras Al Khaimah | United Arab Emirates | Other | Information Systems | Best Researcher Award | worldtopscientists.com |
| Mr | Osama | Alam | Zhejiang University | China | Environmental Science | Environmental Biophysics | Research Excellence Award | worldtopscientists.com |
| Dr | Omid | Norouzisafsari | Anaergia Inc. | Canada | Chemical Engineering | Bioenergy, Renewable Natural Gas (RNG) | Best Researcher Award | worldtopscientists.com |
| Dr | Om | Kurmi | Coventry University | United Kingdom | Medicine and Dentistry | Community Medicine | Best Researcher Award | worldtopscientists.com |
| Assoc. Prof. Dr | Oluwole | Famoriji | University of Johannesburg | South Africa | Engineering | Electrical and Electronics Engineering | Best Researcher Award | worldtopscientists.com |
| Dr | Oluwatoyin Joseph | Gbadeyan | Durban University of Technology, South Africa | South Africa | Engineering | Materials | Excellence in Research Award | worldtopscientists.com |
| Dr | Oluwatobi Adedamola | Ayilara-Adewale | Osun State University, Osogbo, | Nigeria | Computer Science | Artificial Intelligenc | Innovative Research Award | worldtopscientists.com |
| Prof | Olga | Shcherbina | Tananaev Institute of Chemistry - Subdivision of the Federal Research Centre «Kola Science Centre of the Russian Academy of Sciences» Science Centre of Russian Academy of Sciences | Russia | Materials Science | Luminescent ceramics | Best Researcher Award | worldtopscientists.com |
| Assoc. Prof. Dr | Olga | Moskalenko | Federal Research Center “Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences”, Research Institute of Medical Problems of the North | Russia | Medicine and Dentistry | adolescents; internet addiction; problematic internet use; game addiction; social media addiction; Russia | Best Researcher Award | worldtopscientists.com |
| Dr | Olawale | Ola | University of Ibadan | Nigeria | Veterinary Science and Veterinary Medicine | Veterinary Pathology | Best Researcher Award | worldtopscientists.com |
| Dr | Oladele | Afolalu | Durban University of Technology | South Africa | Engineering | Electronic and Computer Engineering | Best Researcher Award | worldtopscientists.com |
| Prof. Dr | Oksana | Mandrikova | Federal State Budget Research Institution Institute of Cosmophysical Research and Radio Wave Propagation, Far Eastern Branch of the Russian Academy of Sciences (IKIR FEB RAS) | Russia | Mathematics | intelligent techniques for data analysis, wavelets, neural networks | Best Researcher Award | worldtopscientists.com |
| Mr | Oforo Didas | Kimaro | Institute of Soil Science and Site Ecology | Germany | Other | Landscape ecology and Nature conservation | Best Research Article Award | worldtopscientists.com |
| Assist Prof Dr | Octavian D. | PAVEL | University of Bucharest | Romania | Chemistry | Catalysis | Best Researcher Award | worldtopscientists.com |
| Dr | NURUL MUSFIRAH | MAZLAN | SCHOOL OF AEROSPACE ENGINEERING, UNIVERSITI SAINS MALAYSIA | Malaysia | Engineering | COMBUSTION | Best Researcher Award | worldtopscientists.com |
| Assoc Prof Dr | Nurul Azita | Salleh | Universiti Utara Malaysia | Malaysia | Social Sciences | Environment and Waste Management | Best Researcher Award | worldtopscientists.com |
| Mrs | Nuri | Lee | yonsei university | South Korea | Veterinary Science and Veterinary Medicine | veterinary pathology and vterinary anatomy | Best Researcher Award | worldtopscientists.com |
| Dr | NUR HIDAYAH | MAT YASIN | Universiti Malaysia Pahang Al-Sultan Abdullah | Malaysia | Engineering | Chemical Engineering | Best Researcher Award | |
| Dr | Nur Adibah | Mohidem | Universiti Sains Islam Malaysia | Malaysia | Environmental Science | Environmental health | Best Paper Award | worldtopscientists.com |