Although higher education research underscores the importance of sense of belonging (SoB) for students' academic success and degree completion, research on the development and impact of SoB for student-athletes is limited. Informed by Astin's (1993) Input-Environment-Output (I-E-O) model and Tinto's (1994) theory of student departure, this study seeks to expand existing scholarship by examining the influence of academic/social experiences and college climate on student-athletes' SoB. Analysis of NCAA Growth, Opportunity, Aspirations and Learning of Students in College (GOALS) survey data obtained from a sample of Division I student-athletes revealed significant differences in SoB across gender, race/ethnicity, and college sport. Additionally, numerous academic and social experiences, as well as team and campus climate dimensions, are associated with student-athlete SoB.