The purpose of this guidebook is to provide the law enforcement field with information about existing resources for promoting workforce diversity through a variety of staffing mechanisms. More specifically, it focuses on creating a pipeline of officers, marketing, selection, staffing for recruitment, mentorship, organizational climate, career progression, analysis and benchmarking, and substantive focus on women and race/ethnicity. It is not meant to be exhaustive, but rather to promote awareness of research and professional publications that may not have been visible or accessible to practitioners. Though limited, resources on this issue are growing, and this guidebook attempts to highlight publications that are unique, particularly insightful, or considered foundational.