Atheists are often marginalized in discussions of religious and spiritual pluralism on college campuses and beyond. As with other minority worldview groups, atheists face challenges with hostile campus climates and misunderstanding of their views. The present study used a large, multi-institutional sample to explore predictors of non-atheist college students' appreciative attitudes toward atheists. Substantial differences were found across identities; secular and spiritual worldview groups hold the most positive views, whereas Christians and Muslims have the most negative attitudes. Interactions with worldview diversity--but not general religious/spiritual engagement--consistently predict more positive attitudes, and these relationships sometimes vary based on students' own worldviews. These results suggest that colleges and universities can create more inclusive environments for atheists, who constitute a sizable minority group on today's college campuses.