| Dr | Cathy | Eng | Vanderbilt-Ingram Cancer Center | Oncology Therapy | United States | Best Research Award | |
| Dr. | Céline | Lechartier | CHU HDQ Québec | Oncology Therapeutics and Novel Approaches | Canada | Best Researcher Award | |
| Dr | Chandrakala | B M | Dayanandasagar college of engineering | Tumour Immunology | India | Best Research Award | |
| Dr | Charles | Su | The Steadman Clinic/Steadman Philippon Research Institute | Others | United States | Best Researcher Award | |
| Assoc. Prof. Dr. | Chen | Wang | Guangxi Medical University Cancer Hospital | Oncology Therapeutics and Novel Approaches | China | Best Researcher Award | pencis.com |
| Dr | Chenglong | Chen | Peking Univerisity | Oncology Therapy | China | Young Scientist Award | |
| Assoc Prof Dr | CHERN EIN | OON | Institute for Research in Molecular Medicine | Oncology Therapeutics and Novel Approaches | Malaysia | Best Research Award | |
| Dr | Chiara | Russo | University of Campania "Luigi Vanvitelli" | Cancer Cell Biology | Italy | Best Researcher Award | |
| Prof. Dr. | Ching-Sheng | Hsu | Liver Diseases Prevention and Treatment Center, Dalin Tzu Chi Hospital/Tzu Chi University | Oncology Therapy | Taiwan | Best Researcher Award | |
| Dr. | Chris | Doudoo | Mater Private Cancer Centre | Radiation Oncology | Ireland | Best Researcher Award | |
| Assoc. Prof. Dr. | Christian | Torbrand | Dept. Urology Helsingborg Hospital | Oncology Therapy | Sweden | Best Researcher Award | |
| Mr | Christopher | Olowosoke | Federal University of Technology Akure | Targeted Cancer Therapy | Nigeria | Best Researcher Award | pencis.com |
| Dr. | CHUANQING | Xu | Beijing University of Civil Engineeing and Architecture | Oncology Case Reports | China | Best Researcher Award | pencis.com |
| Prof | Chuansheng | Zheng | Wuhan Union Hospital | Oncology Therapeutics and Novel Approaches | China | Best Researcher Award | |
| Prof | Chunxia | Su | Shanghai pulmonary hospital | Oncology and Precision Medicine | China | Best Research Award | |
| Prof. Dr. | Claus | Garbe | University of Tuebingen | Oncology Management and Prevention | Germany | Lifetime Achievement Award | pencis.com |
| Dr. | Clement | OSEI AKOTO | Kwame Nkrumah University of Science and Technology | Cancer Science | Ghana | Best Researcher Award | |
| Dr. | Clément | Petitjean | University Hospital Centre Caen, department of maxillofacial and plastic surgery, Caen, | carcinoma | France | Best Researcher Award | |
| Dr. | CLEMENT | ARTHUR | First Hospital of Shanxi Medical University | Oncology and Precision Medicine | China | Best Researcher Award | |
| Ms. | Constantina | Cloconi | German Oncology Center | Oncology Nursing | Cyprus | Best Researcher Award | |