Fueled by socioeconomic trends that changed the composition of organizational workforces, the term workforce diversity was coined in the 1990s. Since then, both researchers and practitioners have strived (and struggled) to understand the concept, its effects in and on organizations, and strategies for managing such effects. In this article, I provide an overview and interpretation of the current literature to examine its purpose, progress, and direction. Highlighting key conceptualizations of the construct, theoretical foundations, and empirical findings on diversity and diversity management, I discuss the evolution and current state of the field and synthesize this information to propose a future research agenda. In doing so, I seek to identify theoretical, empirical, and practice areas of opportunity for advancing scientific knowledge about the meaning, substance, and outcomes of diversity as well as the implementation of diversity science in organizations.