Radiology is among the medical specialties that have made the fewest gains in closing the gap in underrepresented minorities and women. Diversity, equity, and inclusion (DEI) initiatives are important for promoting healthy learning environments for trainees, health equity for patients, and equitable career development opportunities for employees, all of which contribute to innovation in today's competitive health care environment. DEI committees can self-organize or form from institutional directives. These committees can implement impactful projects in multiple domains in education, recruitment and retention, department culture, and health equity research. This article describes the formation of a grassroots DEI committee, key initiatives and strategies, and structures for accountability. ©RSNA, 2023 Quiz questions for this article are available in the supplemental material.