| Dr | Ohoud | Alharbi | King Saud University | Saudi Arabia | View Profile |
| Prof | OKRAM | MUKHERJEE SINGH | Manipur University | India | View Profile |
| Prof. Dr | Oleg | Kapliński | Poznan University of Technology | Poland | View Profile |
| Mr | Oleg | Maschev | Federal State Budgetary Scientific Institution "Federal Scientific Agroengineering Center VIM | Russia | View Profile |
| Dr | Olushola Adeborode | Kolawole | University of Bradford | United Kingdom | View Profile |
| Mr | Oluwatayo Timothy | Jesudaju | Federal University of Technology Akure | Nigeria | View Profile |
| Mr | Ömer Faruk | Uzun | Sinop University | Turkey | View Profile |
| Dr | Ömer | Yavuz | Basaksehir Çam ve Sakura City Hospital | Turkey | View Profile |
| Mr | Omid | Dehghan | Iranshahr University of Medical Sciences | Iran | View Profile |
| Assoc. Prof. Dr | Otilia | Clipa | Ștefan cel Mare University of Suceava | Romania | View Profile |
| Assoc. Prof. Dr | Otilia | Clipa | Ștefan cel Mare University of Suceava | Romania | View Profile |
| Assoc. Prof. Dr | Özlem | Doğan | Ankara University School of Medicine | Turkey | View Profile |
| Dr | P N | Remya | SRM College of Pharmacy | India | View Profile |
| Mr | Panagiotis | Mangenakis | Democritus University of Thrace | Greece | View Profile |
| Prof | Paola | Cabrera | Universidad Técnica Particular de Loja | Ecuador | View Profile |
| Mrs | Parinaz | Hosseini | Iran University of Science and Technology | Iran | View Profile |
| Mr | Paschal | Boruzie | Sunyani Technical University and University of Eastern Finland | Ghana | View Profile |
| Mrs | Patrycja Anna | Glogowski | IRCCS of Bologna | Italy | View Profile |
| Mrs | Paula | | IVIRMA Foundation | Spain | View Profile |
| Dr | Paulo | Araújo | Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Norte | Brazil | View Profile |