| Dr | Oluseye | Olugboyega | Obafemi Awolowo University | Nigeria | Construction Management | Best Researcher Award | |
| Assist. Prof. Dr | Adewale | Olutumise | Adekunle Ajasin University | Nigeria | Climate Change Mitigation and Adaptation | Best Researcher Award | civilengineeringawards.com |
| Dr | Ahmed | Omar | Cairo University | Canada | Structural Engineering | Top Researcher Award | |
| Mr | Rustem | Omarov | National Research Moscow State University of Civil Engineering | Russia | Materials Science and Engineering | | |
| Mr | Ali | Omidkar | University of Calgary | Canada | Environmental Engineering | Best Researcher Award | civilengineeringawards.com |
| Mr | Isreal | Onifade | HRI | United States | Environmental Microbiology | Excellence in Research | civilengineeringawards.com |
| Dr | NYAMBANE | ONTITA | Central south university, china | Kenya | Environmental Microbiology | Excellence in Innovation Award | civilengineeringawards.com |
| Prof. Dr | Christian | Opp | faculty of Geography, Universität Marburg | Germany | Environmental Hydrology | Best Researcher Award | civilengineeringawards.com |
| Dr | Innocent | Osuizugbo | Bells University of Technology, Ota | Nigeria | Construction Management | Best Researcher Award | civilengineeringawards.com |
| Dr | Qiang | Ou | Chongqing University | China | Geotechnical Engineering | Best Researcher Award | civilengineeringawards.com |
| Prof | Hamid | Ouadi | Mohammed V University of Rabat | Morocco | Green Infrastructure | Clean Energy Integration in Civil Engineering Award | civilengineeringawards.com |
| Mr | Zakaria | OUAOUJA | ONIRIS VetAgroBio | France | Sustainable Development | Best Researcher Award | civilengineeringawards.com |
| Dr | Mohamed | Ouf | Concordia University | Canada | Green Infrastructure | Research Excellence Award | civilengineeringawards.com |
| Dr | SAID | OUKAHOU | Sultan Moulay Slimane University | Morocco | Materials Science and Engineering | Best Researcher Award | |
| Dr | Kabir | Oyedotun | University of South Africa | South Africa | Materials Science and Engineering | Best Researcher Award | civilengineeringawards.com |
| Dr | Abiodun | Oyetunji | Global Banking School | United Kingdom | Sustainable Development | Best Researcher Award | |
| Prof. Dr | Ayse | Oz | Cornell University | United States | Others | Excellence in Research | civilengineeringawards.com |
| Dr | Ankit | Oza | Parul University | India | Materials Science and Engineering | Best Researcher Award | civilengineeringawards.com |
| Prof. Dr | Baki | Ozturk | Hacettepe University | Turkey | Structural Engineering | Best Researcher Award | civilengineeringawards.com |
| Mr | Balasundaram | p | national institute of technolodgy | India | Sustainable Development | Sustainable Infrastructure Innovation Award | civilengineeringawards.com |