| Dr | ODERA CHUKWUMAIJEM | OKAFOR | ALEX EKWUEME FEDERAL UNIVERSITY NDUFU ALIKE, IKWO, EBONYI STATE, NIGERIA | Nigeria | topteachers.net |
| Dr | Ohoud | Alharbi | King Saud University | Saudi Arabia | topteachers.net |
| Prof | OKRAM | MUKHERJEE SINGH | Manipur University | India | topteachers.net |
| Prof. Dr | Oleg | Kapliński | Poznan University of Technology | Poland | topteachers.net |
| Dr | Olushola Adeborode | Kolawole | University of Bradford | United Kingdom | topteachers.net |
| Mr | Oluwatayo Timothy | Jesudaju | Federal University of Technology Akure | Nigeria | topteachers.net |
| Mr | Ömer Faruk | Uzun | Sinop University | Turkey | topteachers.net |
| Mr | Omid | Dehghan | Iranshahr University of Medical Sciences | Iran | topteachers.net |
| Assoc. Prof. Dr | Otilia | Clipa | Ștefan cel Mare University of Suceava | Romania | topteachers.net |
| Assoc. Prof. Dr | Otilia | Clipa | Ștefan cel Mare University of Suceava | Romania | topteachers.net |
| Assoc. Prof. Dr | Özlem | Doğan | Ankara University School of Medicine | Turkey | topteachers.net |
| Dr | P N | Remya | SRM College of Pharmacy | India | topteachers.net |
| Mr | Panagiotis | Mangenakis | Democritus University of Thrace | Greece | topteachers.net |
| Mrs | Parinaz | Hosseini | Iran University of Science and Technology | Iran | topteachers.net |
| Mrs | Patrycja Anna | Glogowski | IRCCS of Bologna | Italy | topteachers.net |
| Mrs | Paula | | IVIRMA Foundation | Spain | topteachers.net |
| Dr | Paulo | Araújo | Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Norte | Brazil | topteachers.net |
| Prof | Pedro | Hernández-Cortés | Granada University | Spain | topteachers.net |
| Dr | pian | pu | sichuan tourism university | China | topteachers.net |
| Mrs | Ping | Fang | China Academy of Building Research | China | topteachers.net |