| Mr | OLUFISAYO | OJO | DURBAN UNIVERSITY OF TECHNOLOGY | Nigeria | |
| Dr | Oluwatoyin Joseph | Gbadeyan | Durban University of Technology, South Africa | South Africa | |
| Mr | Onesme | NZASABAYEZU | Gandhi Institute of Technology and Management | India | |
| Dr | Osvaldo | Valarini Junior | Universidade Tecnológica Federal do Parana | Brazil | |
| Ms | Otgonpurev | Nergui | Nuclear Research Center, National university of Mongolia | Mongolia | |
| Dr | Palwasha | Gul | Henan university of technology, china | China | |
| Assist Prof Dr | Pantelis | Sidiropoulos | Aristotle University of Thessaloniki | Greece | |
| Assist Prof Dr | Patrycja | Sosnowska-Sienkiewicz | Department of Pediatric Surgery, Traumatology and Urology, Poznan Univeristy of Medical Sciences | Poland | |
| Assoc Prof Dr | Paula | Milheiro-Oliveira | University of Porto | Portugal | |
| Dr | Paweł | Kwaśnicki | Catholic University of Lublin | Poland | |
| Assoc Prof Dr | PAWEŁ | PŁUDOWSKI | Children's Memorial Health Insitute | Poland | |
| Dr | Pegah | Khosravani | Soil Science & Geomorphology | Germany | |
| Mr | Pranjal | Khakse | University of Michigan | United States | |
| Mr | Probir Kumar | Mittra | Chungbuk National University | South Korea | |
| Dr | Racquel | Gaetani | LAHEY HOSPITAL AND MEDICAL CENTER | United States | |
| Mr | Ralph | Wendt | Klinikum St. Georg Leipzig, Klinik für Nephrologie | Germany | |
| Dr | Rasheed | Akbar | The University of Haripur | Pakistan | |
| Assoc Prof Dr | RASHMI | RANA | Sir Ganga Ram Hospital | India | |
| Dr | Rasim | Simsek | Bilecik Seyh Edebali University | Turkey | |
| Mr | Raul | Alves | Câmara Municipal de Machico | Portugal | |