What is the future of diversity research and practice in HRM? In this paper, we examine diversity ideologies in the United States across four distinct eras: white supremacy and sanctioned exclusion of racioethnic minorities before the 1960s, the equal opportunity-Civil Rights era of the 1960s, the diversity management/multiculturalism era of the 1980s and 90s, and today's inclusion/post-race era. We argue diversity practices and scholarship can be viewed as enactments of the underlying diversity ideology that dominated in a particular era. Our examination provides insight into how changes in societal beliefs and attitudes about non-dominant racioethnic groups and their status and incorporation into society have influenced the trajectory of diversity practice and research. Knowledge about this historical linkage then allows us to speculate on the future of diversity research and practice. Based on a content analysis of the HRM articles published on diversity from 2000-2011, as well as global demographic and political trends, we speculate on what the next era of diversity in HRM may bring. In sum, this paper reflects upon the critical turns of the 20 th and beginning of the 21st centuries as a means of summarizing the evolution of research and practice on workplace racioethnic diversity.