| Dr | Panupong | Hansrivijit | Brigham and Women's Hospital | United States | Environmental Science | Nephrology, Pharmacoepidemiology | Best Researcher Award | environmentalscientists.org |
| Prof. Dr | Panagiotis | Lagouvardos | National & Kapodistrian University of Athens-Dental School | Greece | Dentistry | Operative Dentistry | Research Excellence Distinction Award | environmentalscientists.org |
| Dr | PANAGIOTA | TSIATSIOU | AHEPA University Hospital | Greece | Medicine and Health Sciences | Laboratory / Virology | Best Researcher Award | environmentalscientists.org |
| Mr | Palinda | Perera | Earthlanka Youth Network | Sri Lanka | Environmental Science | Restoration Ecology and Ecosystem Rehabilitation | Research Excellence Award | environmentalscientists.org |
| Assoc. Prof. Dr | Pablo | Ruisoto | Public University of Navarre | Spain | Psychology | Basic Psychology | Excellence in Research Award | environmentalscientists.org |
| Prof. Dr | Özlem | Güzel | Akdeniz University | Turkey | Social Sciences | tourism psychology | Best Researcher Award | environmentalscientists.org |
| Prof | Otari | Didmanidze | Departments of Tractors and Automobiles, Institute of Mechanical and Power Engineering Named After V.P. Goryachkin, Russian State Agrarian University—Moscow Timiryazev Agricultural Academy | Russia | Ecology and Conservation | Thermophysical processes of spontaneous combustion and forced ignition of solid disperse materials | Best Researcher Award | environmentalscientists.org |
| Dr | Oscar Alfredo | Jaramillo Salgado | Universidad Nacional Autónoma de México | Mexico | Engineering | Renewable Energy | Excellence in Scientific Innovation Award | environmentalscientists.org |
| Mr | Osama Bin | Shafaat | Aalto University | Finland | Astronomy and Astrophysics | Remote Sensing | Best Researcher Award | environmentalscientists.org |
| Dr | ORIOL | CANO ROCABAYERA | Universitat de Barcelona - IRBio | Spain | Ecology and Conservation | Ecotoxicology | Research Excellence Award | environmentalscientists.org |
| Dr | Omar | Sims | Cleveland Clinic | United States | Medicine and Health Sciences | Hepatology | Best Researcher Award | environmentalscientists.org |
| Dr | Oluwatayo | Ojo | Cranfield University | United Kingdom | Engineering | Energy Economics and Policy | Best Researcher Award | environmentalscientists.org |
| Dr | Oluwaseun | Adeniji | University of Johannesburg | South Africa | Biotechnology | Nanotechnology | Best Researcher Award | environmentalscientists.org |
| Dr | Oluwakamisi | Akinmoladun | University of Johannesburg | South Africa | Agricultural and Biological Sciences | Animal Science, Food Safety, Food Security | Best Researcher Award | environmentalscientists.org |
| Dr | OLIVE | YEMELE MEKONTCHOU | Hohai University | China | Engineering | Water pollution research | Women Researcher Award | environmentalscientists.org |
| Prof. Dr | Ольга | Озолинь | Институт биофизики клетки Федерального исследовательского центра "Пущинский научный центр биологических исследований" Российской Академии наукInstitute of Cell Biophysics of Russian Academy of Sciences | Russia | Biology and Life Sciences | Эволюционная биология и биоинформатика в изучении внутривидового разнообразия бактерий в микробиомах | Outstanding Academic Achievement Award | environmentalscientists.org |
| Mr | Ojonugwa | Ejiga Peter | Morgan State University | United States | Environmental Science | Artifiicial Intelligence | Best Researcher Award | environmentalscientists.org |
| Mrs | Ojone | Anyebe | Ahmadu Bello University, Zaria, Nigeria | Nigeria | Ecology and Conservation | Sustainable Agricultural Practices | Best Researcher Award | environmentalscientists.org |
| Mrs | NUR | ERADLI | Istanbul Technical University | Turkey | Social Sciences | Business Administration | Best Researcher Award | environmentalscientists.org |
| Dr | Nuno | Gama | Universidade de Aveiro | Portugal | Chemical Engineering | Reciclagem de plasticos | Outstanding Scientist Award | environmentalscientists.org |