Campus involvement has been identified as an important predictor of academic persistence and success. We propose a group identification approach to campus involvement and present the results of 3 studies. Study 1 established that group identity was strongly related to campus involvement. Study 2 determined that group identity mediated the relationship between student residency (on-campus vs. off-campus) and campus involvement. Study 3 replicated the prior results, but used a longitudinal design to help rule out alternative explanations. We conclude that group identification, particularly the affective component, plays an important role in campus involvement, and offer suggestions for enhancing group identification and for further research.