This study examined an intervention designed to improve sense of belongingness for new students at a medium-sized, four-year, public university in the Eastern United States. A randomized controlled trial was used to assess the impact of The Connection Project, a novel, 9-session intervention in a sample of 128 first-year students (77 treatment, 48 waitlist control). Given the onset of COVID-19, students received a hybrid in-person/online intervention. At post-intervention, the intervention group reported a significantly higher sense of school belongingness, after accounting for baseline levels, than control group students. Post-hoc analyses of moderation by demographic variables indicate that the intervention functioned similarly for students from a variety of backgrounds in this sample. These results are interpreted as suggesting the potential value of this intervention to promote a sense of community and connection among new students in college, whether delivered in-person or online.