The Memorial Sloan Kettering Cancer Center’s radiation oncology residency program is one of the largest training programs in the country, with over 22 residents and 18 faculty members. Our residents come from diverse educational and personal backgrounds, bringing their unique strengths to our residency. Throughout four years of training, our residents work one-on-one with leaders in clinical radiation oncology, medical physics, translational research, and basic science. Residents become highly trained in modern radiotherapy techniques, including radiosurgery, image-guided radiotherapy, brachytherapy, and procedures such as intraoperative radiation therapy, total body irradiation, and total skin electron beam therapy. As part of training in a comprehensive cancer center, residents also routinely learn from experts in surgical oncology, medical oncology, and translational medicine. A dedicated year of protected research time provides residents an opportunity to participate in scholarly clinical and/or laboratory research. Our graduates leave this program well prepared to become leaders in radiation oncology.