| Prof | Øystein | Gilje | University of Oslo | Norway | Best Researcher Award | popularengineer.org |
| Ms | Osser | Brigitte | Aurel Vlaicu Univerisity of Arad | Romania | Best Researcher Award | popularengineer.org |
| Mr | Osamah | Bakhalah | Hadhrmout University | Yemen | Best Researcher Award | popularengineer.org |
| Ms | Oritonda | Muribwathoho | CPUT | South Africa | Excellence in Research | popularengineer.org |
| Assoc. Prof. Dr | ORAPIN | ANUTARAPONGPAN | Department of ophthalmology, Faculty of Medicine, Srinagarind Hospital, Khon Kaen University | Thailand | Best Researcher Award | popularengineer.org |
| Dr | Olayomi | Falowo | Landmark University | Nigeria | Best Researcher Award | popularengineer.org |
| Dr | Ojong | Ojong | University of Calabar r | Nigeria | Best Researcher Award | popularengineer.org |
| Ms | Nousheen | Zahoor | Yangzhou University | Pakistan | Best Researcher Award | popularengineer.org |
| Assist. Prof. Dr | Noureddine | Chaachouay | Hassan First University, Settat | Morocco | Best Researcher Award | popularengineer.org |
| Dr | Nontobeko | Mvubu | University of KwaZulu-Natal | South Africa | Best Researcher Award | popularengineer.org |
| Ms | Nohelia | Gutiérrez | Universidade de Coimbra | Portugal | Women Researcher Award | popularengineer.org |
| Ms | Niloufar | Salehi | KTH Royal Institute of Technology | Sweden | Best Researcher Award | popularengineer.org |
| Prof. Dr | Nicholas | Apergis | University of Piraeus | Greece | Best Researcher Award | popularengineer.org |
| Dr | Niccola | Funel | Azienda Ospedaliera USL Nordovest; Department of Laboratory Diagnostics; Division of Immunohematology; Section of Laboratory Analysis; | Italy | Excellence in Innovation | popularengineer.org |
| Assist. Prof. Dr | Nelly | Miteva-Marcheva | Medical University of Plovdiv | Bulgaria | Best Researcher Award | popularengineer.org |
| Dr | Necibe Fusun | Oyman Serteller | Marmara University | Turkey | Best Researcher Award | popularengineer.org |
| Mrs | Naziya | Aslam | MNNIT Allahabad | India | Best Researcher Award | popularengineer.org |
| Mr | Naveed | Iqbal | Petro-Explorers Inc | Canada | Best Researcher Award | popularengineer.org |
| Assoc. Prof. Dr | Nauman Rahim | Khan | Kohat University of Science and Technology | Pakistan | Best Researcher Award | popularengineer.org |
| Assist. Prof. Dr | Nathanaël | Savalle | Université Clermont Auvergne, Clermont Auvergne INP, CNRS, Institut Pascal, F-63000 Clermont–Ferrand, France | France | Young Scientist Award | popularengineer.org |