| Dr | Sasha | Douglas | UC San Diego | Oncology Management and Prevention | United States | Best Researcher Award | |
| Dr. | Chris | Doudoo | Mater Private Cancer Centre | Radiation Oncology | Ireland | Best Researcher Award | |
| Dr | Carmine Antonio | Donofrio | Brescia University | Oncology Therapy | Italy | Best Researcher Award | |
| Prof | Guang-Hui | Dong | Sun Yat-sen University | Others | China | Best Researcher Award | |
| Prof | Matteo | Donadon | Humanitas University | Oncology and Precision Medicine | Italy | Best Research Award | |
| Dr | Mai | Do | Vietnam National Cancer Hospital | Others | Vietnam | Best Research Award | |
| Prof. Dr. | Yinyuan | Ding | Chongqing Medical University | Oncology and Precision Medicine | China | Best Researcher Award | pencis.com |
| Prof | Jasmina | Dimitrova-Shumkovska | Ss Cyril and Methodius University; Faculty of Natural Sciences and Mathematics | Cancer Biomarkers | Macedonia | Best Research Award | |
| Dr | Marcello | Di Martino | La Princesa University Hospital | Others | Spain | Young Scientist Award | |
| Dr | Marcello | Di Giammarco | University of pisa & Institute fro Informatics and Telematics (IIT-CNR) | carcinoma | Italy | Best Researcher Award | pencis.com |
| Mr | Gabriel | Desjardins | Université de Montréal | Others | Canada | Best Researcher Award | |
| Prof. Dr. | Jingyu | Deng | Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, Tianjin's Clinical Research Center for Cancer, | Gastric cancer | China | Best Researcher Award | |
| Dr | Sophie | Deneuve | Leon Berard Comprehensive Cancer Center | Radiation Oncology | France | Best Researcher Award | |
| Ms. | FİLİZ | DEMİRDÖĞEN | ERZİNCAN BİNALİ YILDIRIM UNIVERSITY MENGÜCEK GAZİ EDUCATION AND RESEARCH HOSPITAL | Others | Turkey | Excellence in Research | |
| Prof. | Paolo | De Simone | UNIVERSITY OF PISA | Oncology Therapy | Italy | Most Liked Article Award | pencis.com |
| Prof. Dr. | Elena | De Falco | Sapienza Università di Roma | Cancer Cell Biology | Italy | Women Researcher Award | |
| Dr | Dania | Daye | Massachusetts General Hospital/Harvard Medical School | Oncology and Precision Medicine | United States | Best Researcher Award | |
| Dr. | Ali | Dawood | university of Mosul | Oncology Therapy | Iraq | Best Researcher Award | |
| Dr. | Alaa | Darkazally | Damascus University | Gastric cancer | Syria | Best Researcher Award | pencis.com |
| Assist Prof Dr | Amir | Danyaei | Ahvaz Jundishapur University of Medical Sciences | Targeted Cancer Therapy | Iran | Best Researcher Award | |