William L. Dahut, MD, serves as chief scientific officer for the American Cancer Society (ACS). In this role, he oversees the strategic direction of both intramural and extramural research for the largest nonprofit funder of cancer research. Dr. Dahut manages all pieces of the organization’s discovery work, including surveillance and health equity science, population science, cancer screening guidelines, and extramural discovery science. He serves as the scientific voice of the organization, advises key discovery positions, and manages more than $400 million in research funding. Dr. Dahut guides efforts to enhance and focus the American Cancer Society’s research program, concentrating priorities where they will be most effective and working with key partners and supporters to further progress.