| Dr | Chien-Lin Huang | Huang | National Taiwan University | Taiwan | Water Resources Engineering | Best Researcher Award | |
| Assist. Prof. Dr | Chih-Chieh | Chu | National Changhua University of Education | Taiwan | Others | Best Researcher Award | View Profile |
| Mr | Chito | Villanueva | Polytechnic University of the Philippines | Philippines | Structural Engineering | Best Researcher Award | View Profile |
| Prof. Dr | Christian | Opp | faculty of Geography, Universität Marburg | Germany | Environmental Hydrology | Best Researcher Award | View Profile |
| Dr | christine | majale | Kenyatta university | Kenya | Environmental Policy and Management | Waste Reduction and Management Award | View Profile |
| Prof Dr | Christo | Nanev | INST PHYSICAL CHEMISTRY BAS | Bulgaria | Materials Science and Engineering | Best Researcher Award | |
| Prof | Christophe | Sola | Université Paris-Saclay | France | Environmental Microbiology | Best Researcher Award | |
| Dr | CHRISTOPHER | AURA | KENYA MARINE AND FISHERIES RESEARCH INSTITUTE | Kenya | Water Resources Engineering | Excellence in Research | View Profile |
| Mr | Christossy | Lalika | WaterAid Tanzania | Tanzania | Water Resources Engineering | Best Researcher Award | |
| Ms | Chrysa | Politi | National Technical University of Athens | Greece | Green Infrastructure | Best Researcher Award | View Profile |
| Prof | Chu-Ping | Lo | National Taiwan University | Taiwan | Sustainable Development | Best Researcher Award | View Profile |
| Dr | Chuanhao | Lin | George Washington University | United States | Urban Planning | Best Researcher Award | View Profile |
| Prof. Dr | Chuanshan | Dai | Tianjin University | China | Others | Best Researcher Award | View Profile |
| Dr | chuntong | Li | shanghai jiao tong university | China | Structural Engineering | Best Researcher Award | View Profile |
| Mrs | CINTIA | ELEUTERIO | INPA- UEA | Brazil | Environmental Hydrology | Research Excellence Award | View Profile |
| Dr | Cláudio | Albuquerque Frate | Federal University of Ceará | Brazil | Environmental Engineering | Research Excellence in Civil and Environmental Engineering Award | View Profile |
| Mr | Clement | Asare | Kwame Nkrumah University of Science and Technology | Ghana | Environmental Risk Assessment | Excellence in Research | View Profile |
| Dr | Cong | Lin | China Aero-Polytechnology Establishment | China | Risk and Resilience Engineering | Research Excellence Award | View Profile |
| Dr | Cristian-Dragos | Varganici | "Petru Poni" Institute of Macromolecular Chemistry | Romania | Environmental Engineering | Best Researcher Award | View Profile |
| Assoc. Prof. Dr | Da | Xu | China University of Geosciences, Wuhan | China | Sustainable Development | Best Researcher Award | View Profile |