| Assoc Prof Dr | Richard | Ocaya | University of the Free State | South Africa | Materials Science | Schottky photodetectors and devices | Best Researcher Award | |
| Dr | Juan | Ochando Tomás | Sapienza University of Rome | Spain | Environmental Science | Palynology and Paleobotany | Best Researcher Award | |
| Mr | Douglas | Odongo Attoh | University of Missouri, Columbia, USA | United States | Health Professions | Intellectual disabilities and Healthcare | Best Researcher Award | |
| Assist Prof Dr | Toyin | Odutola | University of Port Harcourt | Nigeria | Engineering | Energy | Best Researcher Award | |
| Prof | Joshua | Ogendo | Egerton University | Kenya | Agricultural and Biological Sciences | Crop Protection | Best Paper Award | |
| Dr | Ayodeji | Ogunleye | Obafemi Awolowo University,Ife | Nigeria | Agricultural and Biological Sciences | Agricultural Finance and Cooperatives | Best Researcher Award | |
| Dr | Jeongseog | Oh | Korea Institute of Energy Research (KIER) | South Korea | Energy | Aluminum water splitting | Best Researcher Award | bestpaperawards.com |
| Mr | DONG-JOON | OH | Han Wha Pharma Co., Ltd | South Korea | Pharmacology, Toxicology and Pharmaceutical Science | Pharmaceutical Formulation, Fixed-Dose Combination, Modified Release Tablets, Multi-layer Coating Technology, Drug Delivery System | Best Researcher Award | bestpaperawards.com |
| Dr | Yasuhiro | Ohara | Reproduction Clinic Osaka | Japan | Medicine and Dentistry | Reproductive Medicine | Best Researcher Award | bestpaperawards.com |
| Dr | Kazutaka | Ohi | Gifu University Graduate School of Medicine | Japan | Medicine and Dentistry | Psychiatry | Best Researcher Award | bestpaperawards.com |
| Prof | RAUL | OJEDA | Biosynthesis Medical, C.A | Venezuela | Immunology and Microbiology | Infectious diseases / COVID-19 | Best Researcher Award | |
| Mr | Jude | Ojero | University of Manchester | United Kingdom | Earth and Planetary Sciences | Geology | Best Researcher Award | |
| Mr | Suvendu | Ojha | Institute of Life Sciences, Bhubaneswar | India | Immunology and Microbiology | Bacteriology | Best Researcher Award | bestpaperawards.com |
| Assist. Prof. Dr | Saidani | okba | univ-BBA | Algeria | Energy | solar cells | Best Researcher Award | bestpaperawards.com |
| Ms | AWELE | OKOLIE | wit | United States | Computer Science | finance | Excellence in Research Award | bestpaperawards.com |
| Dr | Xavier-Itam | Okon | National Collateral Registry | Nigeria | Economics, Econometrics and Finance | Central banking | Best Researcher Award | |
| Dr | Chinwe | Okonkwo | Nnamdi Azikiwe University, Awka. | Nigeria | Chemistry | Analytical Chemistry | Best Researcher Award | |
| Dr | Enyioma | Okpara | North-West University | South Africa | Chemistry | Electrochemistry | Best Researcher Award | |
| Dr | oluwasanmi | Olabode | Covenant University | Nigeria | Engineering | Petroleum Engineering/Reservoir Engineering/Enhanced oil recovery and Optimization | Best Researcher Award | |
| Mr | Bolaji | Oladipo | University of Rhode Island | United States | Engineering | Mechanical Engineering | Best Researcher Award | bestpaperawards.com |