This study examined the effectiveness of a single-session group motivational enhancement alcohol intervention on adjudicated male college students. Over two sequential academic years, 230 students sanctioned by the university for alcohol-related infractions attended a 60- to 75-minute group intervention. The intervention consisted of a timeline followback, social norms education, decisional balance for behavioral change, blood alcohol content (BAC) information, expectancy challenge, and generation of behavioral goals. Participants were followed weekly for three months and showed reductions in drinking (29%) and alcohol-related consequences (32%) at three-month follow-up. The intervention was successful in reducing drinking for both first-year students and upperclassmen, with reductions appearing to be a function of the intervention and not the citation itself. Furthermore, a post hoc control condition revealed that those participants randomly assigned to the intervention group condition reduced drinking (19%) and alcohol-related consequences (44%) more than participants in the control condition over one month. These results provide continued evidence of the effectiveness of group motivational enhancement interventions with adjudicated male college students. (Contains 2 figures.)