Objective: To examine the prevalence of student utilization of campus sexual health resources and their association with sexually transmitted infection (STI) testing. Participants: Undergraduate students (n = 7020) at a large Midwestern university completed a confidential online survey in 2015. Methods: A probability-based sample of undergraduate students completed a cross-sectional online survey. Results: Commonly accessed sexual health resources were student orientation activities about sexual assault or rape, sexuality/gender classes, gender and sexual orientation panels, class panels on sexual assault, birth control and STI presentations, and having joined a sexuality-related student organization. Campus sexual health resource utilization was significantly associated with greater STI testing since college. Gender, race, class level, enrollment status, sexual orientation, timing of last sexual event, and perceived STI risk were significantly associated with STI testing in college. Conclusions: Campus sexual health resources play an important role in student sexual health promotion.