| Kamal | Reddad | national school of applied science kenitra | Morocco | Energy | Hydrogen storage | worldtopscientists.com |
| Nina | Recek | Jožef Stefan Institute | Slovenia | Agricultural and Biological Sciences | Biochemistry and molecular biology | worldtopscientists.com |
| Shahab | Reaeian | Kermanshah University of Medical Sciences | Iran | Health Professions | Prevention | worldtopscientists.com |
| Qasim | Raza | Jeonbuk National University | South Korea | Materials Science | Energy and Catalysis | worldtopscientists.com |
| Ashish | Rayal | Uttaranchal University | India | Mathematics | Differential equations and wavelet theory | worldtopscientists.com |
| Rahul | Ravichandran | Adhiparasakthi Agricultural College | India | Agricultural and Biological Sciences | Agricultural Engineering in Soil and Water Conservation Engineering | worldtopscientists.com |
| Thitirat | Rattanawongwiboon | Thailand Institute of Nuclear Technology (Public Organization) - Headquarter | Thailand | Materials Science | polymer, energy application | worldtopscientists.com |
| Prangya | Rath | NA | India | Biochemistry, Genetics and Molecular Biology | Biotechnology | worldtopscientists.com |
| Somayeh | Rastegar | University of Hormozgn | Iran | Agricultural and Biological Sciences | Horticultural | |
| Abbas | Rasoolzadegan | Ferdowsi University of Mashhad | Iran | Engineering | Software Engineering | worldtopscientists.com |
| MOHSIN | RASOOL | University of Agriculture Faialabad | Pakistan | Agricultural and Biological Sciences | Entomology | worldtopscientists.com |
| Emanuele | Raso | University of Rome Tor Vergata | Italy | Other | Medical Devices | worldtopscientists.com |
| Adamu | Rasheed | Bayero University Kano | Nigeria | Chemical Engineering | Waste Valorization | worldtopscientists.com |
| Zbigniew | Ras | University of North Carolina at Charlotte | United States | Computer Science | Recommender Systems | worldtopscientists.com |
| Pavuluri Srinivasa | Rao | Indian Institute of Technology Kharagpur | India | Agricultural and Biological Sciences | Food Process Engineering | worldtopscientists.com |
| Pritam | Rani | Bennett University | India | Computer Science | Blockchain | worldtopscientists.com |
| Bhavna | Rani | Uppsala university, Sweden | Sweden | Biochemistry, Genetics and Molecular Biology | Stem cell biology | worldtopscientists.com |
| Shalli | Rani | Chitkara University, Punjab | India | Computer Science | WSN, IoT, ML | worldtopscientists.com |
| Nora | Ramos Vallecillo | Universidad de Zaragoza | Spain | Arts and Humanities | Art Expression Didactics | worldtopscientists.com |
| Sundar | Ramalingam | College of Dentistry and Dental University Hospital, King Saud University Medical City | Saudi Arabia | Dentistry | Oral and Maxillofacial Surgery | worldtopscientists.com |