Bridging the gap between research and practice is a critical frontier for the future of social work. Integrating implementation science into social work can advance our profession's effort to bring research and practice closer together. Implementation science examines the factors, processes, and strategies that influence the uptake, use, and sustainability of empirically supported interventions, practice innovations, and social policies in routine practice settings. The aims of this article are to describe the key characteristics of implementation science, illustrate how implementation science matters to social work by describing several contributions this field can make to reducing racial and ethnic disparities in mental health care, and outline a training agenda to help integrate implementation science in graduate-level social work programs.