This study analyzes data from the National Longitudinal Study of Freshmen (NLSF) to examine whether religious affiliation and involvement are related to the outcome of interracial friendship in the fourth year of college. When controlling for students' demographic characteristics, institutional characteristics, and previous levels of interracial friendship, being Protestant or Jewish was negatively related to interracial friendship. In addition, students who reported higher levels of religious salience and involvement in campus religious organizations were significantly less likely to have close friends of another race by the fourth year of college. Findings highlight the need for educators to understand the role of religion in shaping students' precollege and college experiences with diversity. (Contains 3 tables.)