This article argues that one possible avenue for addressing and increasing student body diversity in charter schools may lie with the authorizer. In particular, we focus on the role of university-based authorizers, a group of sponsors that would appear to be especially concerned with educational opportunity given their faculties' traditional concern with issues of social justice. Thus, this article examines whether university-based charter school authorizers encourage charter school operators to recruit and enroll a diverse student body, and it discusses the role that authorizers could play in promoting more diverse charter schools.