| Assist. Prof. Dr | Roberta | Lassance-Soares | University of Miami | United States | View Profile |
| Prof | reza | alimardani | university of tehran | Iran | View Profile |
| Prof. Dr | Renee | Clary | Mississippi State University | United States | View Profile |
| Ms | Réla | Bodea | George Emil Palade UMPhST Targu Mures | Romania | View Profile |
| Mr | Reagan | MANDIYA | Université de Lorraine | France | View Profile |
| Mr | Ravindaran | Thangavel | Amrita School of Engineering | India | View Profile |
| Dr | Rauoof Ahmad | Rather | SKUAST K | India | View Profile |
| Dr | Rania | H. Al-Taie | Mustansiriyah University, College of Medicine | Iraq | View Profile |
| Dr | Ramesh | Chinnasamy | Wildlife Institute of India | India | View Profile |
| Mr | Ramachandra M | Bhaskara | Frankfurt Institute for Advanced Studies | Germany | View Profile |
| Dr | Rakesh Singh | Negi | Department of chemistry PNG Govt PG college Ramnagar | India | View Profile |
| Dr | Rajesh Kumar | Soothar | Sindh Agriculture Uiversity, Tandojam | Pakistan | View Profile |
| Prof | Rajasimman | Manivasagan | Annamalai University | India | View Profile |
| Mr | Rajan Kumar | Kandel | Tribhuvan University, Surkhet Multiple Campus; Graduate School of Education Kirtipur | Nepal | View Profile |
| Mr | Raja | Nakka | Ragon Institute of MGH, MIT & Harvard | United States | View Profile |
| Ms | Rahaf | Alsuhaimi | King Abdulaziz University | Saudi Arabia | View Profile |
| Ms | Raghi | K R | Sathyabama Institute of Science and Technology | India | View Profile |
| Dr | Rabiu Saminu | Jibril | Kano state polytechnic | Nigeria | View Profile |
| Assist. Prof. Dr | R. Ahmad Zaky | El Islami | Universitas Sultan Ageng Tirtayasa | Indonesia | View Profile |
| Ms | Qiusong | Liang | Northeast Forestry University | China | View Profile |