| Ramón | García-Marín | University of Murcia | Spain | Social Sciences | Geography | worldtopscientists.com |
| Rammohan Rao | Makineni | University of wollongong | Australia | Engineering | Electrical Engineering | worldtopscientists.com |
| Ramin | Yousefi | Islamic Azad University | Iran | Materials Science | Nanostructures | worldtopscientists.com |
| Ramesa | Shafi | King Saud university | Saudi Arabia | Biochemistry, Genetics and Molecular Biology | Biochemistry | worldtopscientists.com |
| Ramadevi | Subramani Reddy | Texas Tech University Health Sciences Center El Paso | United States | Health Professions | Cancer Biology | worldtopscientists.com |
| Ramadan | AlShdefat | Jadara University | Jordan | Pharmacology, Toxicology and Pharmaceutical Science | Pharmaceutical Sciences | worldtopscientists.com |
| Rakshit | Jakhar | AGH University of Krakow | Poland | Environmental Science | E-Waste, Human Health, Climate change | worldtopscientists.com |
| RAKESH | KUMAR | Kaushik Orthopedic Pvt. Ltd | India | Engineering | Additive manufacturing | worldtopscientists.com |
| Rakesh | Kumar | Kaushik Orthopaedic Pvt . Ltd. | India | Engineering | Additivemanufacturing | worldtopscientists.com |
| RAJWINDER | KAUR | CHITKARA UNIVERSITY | India | Pharmacology, Toxicology and Pharmaceutical Science | MEDICINAL CHEMISTRY | worldtopscientists.com |
| Rajneesh | Singh | IIT Roorkee | India | Environmental Science | Water quality management | worldtopscientists.com |
| Rajen | Kumar | Indian Institute of Technology Patna | India | Mathematics | Information Theory | worldtopscientists.com |
| Rajani | Alugonda | JNTUK Kakinda | India | Engineering | Signal/ Image Processing | worldtopscientists.com |
| Raj | Senani | Netaji Subhas University of Technology, Sector 3, Dwarka, New Delhi 110078 | India | Engineering | Analog Integrated Circuits and Signal Processing | worldtopscientists.com |
| Raj Kumar | Gautam | ICAR-National Bureau of Plant Genetic Resources, Pusa, New Delhi | India | Agricultural and Biological Sciences | Genetics and Plant Breeding | worldtopscientists.com |
| Rahul | Ravichandran | Adhiparasakthi Agricultural College | India | Agricultural and Biological Sciences | Agricultural Engineering in Soil and Water Conservation Engineering | worldtopscientists.com |
| Rahma | LAOUITI | Brest Business school | France | Business, Management and Accounting | Management / Entrepreneurship | worldtopscientists.com |
| Ragaa | Hamouda | University of Sadat City | Egypt | Agricultural and Biological Sciences | microbiology | worldtopscientists.com |
| Rafael | Sánchez-Sánchez | Universidad de Huelva | Spain | Environmental Science | Acústica ambiental | worldtopscientists.com |
| Rafael | Vareto | Universidade Federal de Minas Gerais | Brazil | Computer Science | Pattern Recognition and Machine Learning | worldtopscientists.com |