| Romeo | Flores | GeoSciTech Energy Resources | United States | Energy | Environmental Science; Earth and Planetary Science | worldtopscientists.com |
| Romoke Grace | Akindele | Hebei University of Technolgy | China | Engineering | Electronics Science and Technology | worldtopscientists.com |
| Ron | Mahabir | University of Liverpool | United Kingdom | Energy | Sustainability | worldtopscientists.com |
| Rongliang | Jia | Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences | China | Environmental Science | Ecology/Biological soil crusts/Prevention and control of desertification | worldtopscientists.com |
| Rosa María | Martínez-Espinosa | University of Alicante | Spain | Biochemistry, Genetics and Molecular Biology | Biochemistry-Health Sciences | worldtopscientists.com |
| Rovina | Kobun | Food Security Research Lab, Faculty of Food Science and Nutrition, Universiti Malaysia Sabah, 88400, Kota Kinabalu, Sabah, Malaysia. | Malaysia | Agricultural and Biological Sciences | Postharvest | worldtopscientists.com |
| Rupjyoti | Neog | Sardar Patel University, Anand, Gujarat | India | Agricultural and Biological Sciences | Sustainable chemistry | worldtopscientists.com |
| Rym | Hadded | IRA MEDENINE | Tunisia | Earth and Planetary Sciences | Hydrogéologie | worldtopscientists.com |
| S Anita | Shanthi | Annamalai University | India | Mathematics | Fuzzy sets and systems | worldtopscientists.com |
| S. Joseph | Antony | University of Leeds | United Kingdom | Chemical Engineering | Granular Mechanics | worldtopscientists.com |
| S. M. Moazzem | Hossen | Department of Pharmacy, University of Chittagong | Bangladesh | Pharmacology, Toxicology and Pharmaceutical Science | Natural Product | worldtopscientists.com |
| Saad | Aljlil | King Abdullaziz City for Science and Technology | Saudi Arabia | Chemical Engineering | Water treatment and seawater desalination | worldtopscientists.com |
| Sabre | Kais | North Carolina State University | United States | Chemistry | Quantum Computing | worldtopscientists.com |
| Sachin | Jhawar | The Ohio State University Comprehensive Cancer Center | United States | Medicine and Dentistry | Oncology | worldtopscientists.com |
| Saddam | Hussain | Instituto de Química de São Carlos, Univ | Brazil | Chemistry | Biological Inorganic chemistry | worldtopscientists.com |
| Sadia | Naz | University of the Punjab | Pakistan | Chemistry | Ionic Liquids and their applications for sustainable future | worldtopscientists.com |
| Saeedeh | Barzegar-Parizi | Sirjan University of Technology | Iran | Engineering | Telecommunication, Microwave and optics | worldtopscientists.com |
| Saeid | Seyedi | BASU | Iran | Computer Science | quantum | worldtopscientists.com |
| Safiu | Suberu | North Carolina A&T State University | United States | Agricultural and Biological Sciences | Sustainable Animal Production and Health | worldtopscientists.com |
| Sajid | Ahmad | Dean faculty of Geosciences Punjab University Lahore | Pakistan | Environmental Science | Air pollution, Earth science | worldtopscientists.com |