| Assist Prof Dr | Rebaz | OMER | Koya University | Iraq | |
| Dr | Renan | Tosin | Department of Geosciences, Environment and Spatial Planning, Faculty of Sciences of the University of Porto | Portugal | |
| Mr | Reza | Shahouni | Iran University of Science and Technology | Iran | |
| Prof Dr | Richard | Alexander | Vienna University of Economics and Business | Austria | |
| Dr | Ridha | Guebsi | INRS | Canada | |
| Assoc Prof Dr | Rifat | Olgun | Akdeniz University | Turkey | |
| Prof | Riheb | HADJI | Setif 1 University | Algeria | |
| Assist Prof Dr | Roksana | Malak | Dr Roksana Malak | Poland | |
| Prof Dr | Rolf | Teschke | KLINIKUM Hanau, Goethe University Frangkfurt Germany | Germany | |
| Dr | Roxana Andra | Coman | Endoplus Clinic | Romania | |
| Mr | Ruoyu | Zhou | University of Tsukuba | Japan | |
| Dr | S. ASHOK | KUMAR | JAIN University | India | |
| Dr | Sadhan | Gope | National Institute of Technology Agartala | India | |
| Dr | Saibal | Ghosh | Tocklai Tea Research Institute | India | |
| Mrs | Saima | Butt | International Islamic University Islamabad | Pakistan | |
| Dr | Samir | Jawhara | CNRS-UMR 8576 Lille University | France | |
| Dr | Sanaa | Bendahmane | Private University of Marrakech | Morocco | |
| Prof | Sanaba | BOUMBALY | Centre de Recherche en Virologie | Guinea | |
| Assoc Prof Dr | Sangho | Bok | University of Denver | United States | |
| Mr | Sanjay | Dutta | Khwaja Yunus Ali University | Bangladesh | |