Every profession has an essential, behind-the-scenes component without which it cannot function. Medicine is no exception. Pathologists are one of medicine’s group of specialists whose work as diagnosticians is critical for patient care. This article describes the multifaceted role that pathologists play in oncology practice and cancer research. To do so, we will highlight the role of pathologists in a typical “day-in-the-life” of a patient’s journey in cancer care. Clinicians, clinical trialists, radiologists, researchers, and pathologists, all work together to provide optimal, multidisciplinary care for patients with cancer.