| RAKESH | KUMAR | Kaushik Orthopedic Pvt. Ltd | India | Engineering | Additive manufacturing | 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 Kumar | Gautam | ICAR-National Bureau of Plant Genetic Resources, Pusa, New Delhi | India | Agricultural and Biological Sciences | Genetics and Plant Breeding | 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 |
| 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 Resende Assis | Silva | Federal University of Sao Carlos | Brazil | Materials Science | Food Packaging | worldtopscientists.com |
| Rafael | Vareto | Universidade Federal de Minas Gerais | Brazil | Computer Science | Pattern Recognition and Machine Learning | worldtopscientists.com |
| Rafael | Sánchez-Sánchez | Universidad de Huelva | Spain | Environmental Science | Acústica ambiental | worldtopscientists.com |
| Radovan | Kopecek | ISC Konstanz | Germany | Energy | Solar | worldtopscientists.com |
| radhika | thakkar | Eastman Institute for oral health, University of rochester | United States | Dentistry | Dentistry | worldtopscientists.com |
| Radha | Goel | Lloyd Institute of Management & Technology | India | Pharmacology, Toxicology and Pharmaceutical Science | Pharmacology | worldtopscientists.com |
| Rabie | Said | Latrobe University | Australia | Energy | Energy Economics | worldtopscientists.com |
| Rabie | Said | La Trobe University | Australia | Energy | Renewable Energy and Carbon Reduction | worldtopscientists.com |
| Rabab | Hassan Elshaikh Mahmoud | A' Sharqiyah University | Oman | Health Professions | Hematology | worldtopscientists.com |
| R.K. | Bathla | Desh Bhagat University | India | Computer Science | Data Science and Artificial Intelligence | worldtopscientists.com |