| Dr | Odey | Alshboul | THE HASHEMITE UNIVERSITY | Jordan | Engineering | Civil Engineering | Research Excellence Award | View Profile |
| Prof. Dr | Oguzhan | Yilmaz | Gazi University | Turkey | Engineering | Additive Manufacturing | Best Researcher Award | View Profile |
| Dr | Ola | Farrag | Future University in Egypt | Egypt | Chemistry | Analytical Chemistry | Best Researcher Award | View Profile |
| Prof. Dr | OLEG | SERGIYENKO | INSTITUTO DE INGENIERÍA DE LA UNIVERSIDAD AUTÓNOMA DE BAJA CALIFORNIA | Mexico | Engineering | ELECTRONICA | Most Cited Article Award | |
| Dr | Oludare | Abiodun | University of Abuja | Nigeria | Computer Science | Cybersecurity and Digital Forensic | Most Cited Article Award | |
| Dr | Oludare | Abiodun | University of Abuja | Nigeria | Computer Science | Cybersecurity and Digital Forensic | Best Review Article Award | |
| Mr | Omar | Hussein | College of Petroleum Processes Engineering, Tikrit University | Iraq | Engineering | Nanofluid/Solar Energy/Nanoparticles Synthesis/Charachterizations /Heat transfer(CFD) | Best Researcher Award | |
| Dr | Omar | Aljasim | Dilovsi State Hospital | Turkey | Medicine and Dentistry | orthopaedic andtraumatology/ hand surgery | Research Excellence Award | View Profile |
| Dr | Omnia | Ahmed | Nanotoxicology Project lab | Japan | Medicine and Dentistry | Nano-materials Toxicology | Best Researcher Award | View Profile |
| Ms | Orikeda | Trashi | University of Texas at Dallas | United States | Chemistry | Materials | Best Researcher Award | View Profile |
| Dr | Oscar Alberto | Rojas Castillo | University of Copenhagen | Denmark | Environmental Science | Freshwater biology | Most Reader's Article Award | View Profile |
| Dr | Oumaima | Achour | Université de Sousse | Tunisia | Computer Science | social influence analysis | Best Review Article Award | View Profile |
| Ms | Oussama | Baaloudj | Università degli Studi della Basilicata | Italy | Engineering | Process Engineering | Young Scientist Award | View Profile |
| Assoc. Prof. Dr | ÖZCAN | PALAVAN | EUROPENA UNIVERSITY OF LEFKE | Cyprus | Social Sciences | Education | Most Reader's Article Award | View Profile |
| Prof | Özer | BEKAROĞLU | Tecnical University of İstanbul | Turkey | Chemistry | Electrochemistry- Physics-Materials Science | Best Researcher Award | View Profile |
| Prof | Ozgul | Keles | Istanbul Technical University | Turkey | Energy | Energy Storage Systems | Best Researcher Award | View Profile |
| Mr | Pablo M. | Garcia-Roves | University of Barcelona | Spain | Biochemistry, Genetics and Molecular Biology | Integrative Physiology | Most Tweeted Article Award | |
| Prof | Padmanabha Rao | Amarachinta | Anurag University | India | Pharmacology, Toxicology and Pharmaceutical Science | Pharmaceutics and PKPD studies | Best Researcher Award | |
| Dr | PALLAVI | SINGH | HINDUSTAN INSTITUTE OF TECHNOLOGY AND SCIENCE | India | Engineering | OPTICAL COMMUNICATION | Most Cited Article Award | View Profile |
| Prof | Paloma | Torres | Oswaldo Cruz Foundation | Brazil | Health Professions | Nutrition sciences | Best Researcher Award | |