International doctoral students in the United States face challenges of acculturation in academia yet complete graduate school at higher rates and more quickly than their domestic counterparts. This study examined advisor support, sense of belonging, and academic self-concept among international and domestic doctoral students at a research university in the Midwestern United States. International students placed a higher value on research-related and other academic experiences than domestic students; they also reported a stronger sense of belonging. Advisor support was associated with a stronger sense of belonging and academic self-concept for both groups. However, while sense of belonging was related to academic self-concept among domestic students, there was no relationship between the two among international students. (Contains 2 figures and 4 tables.)