| Dr | Rahim | Zahedi | University of Tehran | Iran | Computer aided machine design | Energy Systems Engineering, Energy and Environment | Best Researcher Award | |
| Assist Prof Dr | Rahim | Ullah | Sarhad University of Science and IT Peshawar | Pakistan | Others | Pharmacy | Best Researcher Award | |
| Assoc Prof Dr | Raimondas | Jasevičius | Vilnius Gediminas Technical University | Lithuania | Fluid mechanics | Computer Aided Design in Mechanical Engineering | Best Researcher Award | |
| Prof Dr | Raimundo | Freire Júnior | UFRN | Brazil | Solid mechanics | Fatigue and impact | Best Researcher Award | |
| Ms | Rajasrivalli | Vemuri | Advaitech Studios LLP | India | Computer aided machine design | CAD in Mechanical Engineering - 3D printing | Young Scientist Award | |
| Assist Prof Dr | Rajendra | Adhikari | Kathmandu University | Nepal | Materials selection and structural design | Computational Materials Design, Heusler alloys, Perovskites | Best Researcher Award | |
| Dr | Rajesh | Haldhar | Yeungnam University | South Korea | Computer technology for design and simulation | Computational studies (DFT, MC & MDS) | Best Researcher Award | |
| Mr | Rajib Baran | Roy | Central Queensland University | Australia | Others | Utilization of renewable energy in electrical power system | Excellence in Research | |
| Dr | Ramanathan | Subramanian | University of Canberra | Australia | Decision support systems | Explainable Machine Learning | Best Researcher Award | |
| Dr | Ramesh Kumar | Sahni | ICAR-Central Institute of Agricultural Engineering, Bhopal | India | Design of mechanical and electromechanical devices | Farm Mechanization | Best Researcher Award | View Profile |
| Assoc Prof Dr | Rami | Abbas | Beirut Arab University | Lebanon | Others | Health Promotion and Prevention / Ophtalmology | Excellence in Innovation | |
| Dr | Ramy | Shenouda | German university in Cairo | Egypt | Fluid mechanics | Solar energy/ Renewable energy/ Computational fluid dynamics | Best Researcher Award | |
| Ms | Raquel | Delgado-Aguilera Jurado | Universidad Politécnica de Madrid (UPM) | Spain | Management information systems | Aerospace engineering | Best Researcher Award | |
| Dr | Rassim | Younes | University bejaia | Algeria | Materials selection and structural design | Coating | Best Researcher Award | |
| Dr | Raul | Durand | University of Brasilia | Brazil | Computer technology for design and simulation | Numerical methods | Best Researcher Award | |
| Dr | Ravindra | Kulkarni | BVDUs Poona College of Pharmacy, Pune | India | Others | Pharmaceutical Chemistry | Excellence in Research | |
| Mrs | Rawan | Abu Alatta | Al-Balqa' Applied University | Jordan | Others | هندسة العمارة- التصميم المعماري و التكنولوجيا | Best Researcher Award | |
| Prof | Redouane | Zitoune | ICA / UMR 5312 | France | Manufacturing processes | manufacturing and machining of composites | Outstanding Scientist Award | |
| Assist. Prof. Dr | Reem | Aljethi | Imam Mohammad Ibn Saud University | Saudi Arabia | Operational research | Applied Mathematics, Engineering, Financial, Financial partial differential equations | Best Researcher Award | View Profile |
| Prof | Rehab | Ali | Department of Food Science and Human Nutrition, College of Agriculture and Food, Qassim University, Buraydah, Saudi Arabia | Saudi Arabia | Manufacturing processes | Food | Best Researcher Award | View Profile |