| Thitirat | Rattanawongwiboon | Thailand Institute of Nuclear Technology (Public Organization) - Headquarter | Thailand | Materials Science | polymer, energy application | worldtopscientists.com |
| Rahul | Ravichandran | Adhiparasakthi Agricultural College | India | Agricultural and Biological Sciences | Agricultural Engineering in Soil and Water Conservation Engineering | worldtopscientists.com |
| Ashish | Rayal | Uttaranchal University | India | Mathematics | Differential equations and wavelet theory | worldtopscientists.com |
| Qasim | Raza | Jeonbuk National University | South Korea | Materials Science | Energy and Catalysis | worldtopscientists.com |
| Shahab | Reaeian | Kermanshah University of Medical Sciences | Iran | Health Professions | Prevention | worldtopscientists.com |
| Nina | Recek | Jožef Stefan Institute | Slovenia | Agricultural and Biological Sciences | Biochemistry and molecular biology | worldtopscientists.com |
| Kamal | Reddad | national school of applied science kenitra | Morocco | Energy | Hydrogen storage | worldtopscientists.com |
| srilatha | Reddy | CVR College of Engineering | India | Engineering | Signal Processing with VLSI | worldtopscientists.com |
| Muhammad Muqeet | Rehman | Jeju National University, South Korea | South Korea | Energy | Biowaste based Triboelectric Energy Harvesting | worldtopscientists.com |
| Djamila | Rekioua | University of Bejaia | Algeria | Engineering | Energies renouvelables | worldtopscientists.com |
| David | Reynalte-Tataje | Universidade Federal da Fronteira Sul | Brazil | Environmental Science | Biologia da Conservação | worldtopscientists.com |
| Renee | Reynolds | University at Buffalo | United States | Neuroscience | Residency Training | worldtopscientists.com |
| Md Nasim | Reza | Chungnam National University, Daejeon, KOrea | South Korea | Agricultural and Biological Sciences | Agricultural Engineering, Biosystems Engineering | worldtopscientists.com |
| Junaid | Riaz | Kunming University of Science and Technology | China | Materials Science | Supercapacitor | worldtopscientists.com |
| Beltran | Roca | Universidad de Cádiz | Spain | Social Sciences | Sociology | worldtopscientists.com |
| Leandro | Rocha | Federal University of São Carlos (UFSCar) | Brazil | Materials Science | Semiconductors | worldtopscientists.com |
| Javier | Rodríguez | University of Jaén | Spain | Agricultural and Biological Sciences | Microbiology | worldtopscientists.com |
| VICTOR | RODRIGUEZ | INIFAP | Mexico | Environmental Science | climate change | worldtopscientists.com |
| Sonali | Rokade | VIT Bhopal University | India | Engineering | Computer Science and Engineering | worldtopscientists.com |
| Luciane | Romao | Universidade Federal de Sergipe | Brazil | Chemistry | Análise de Traços e Quimica Ambiental | |