This study examined whether the extent to which youth experience consequences resulting from substance use was related to their impulse control. Longitudinal data are from 1,216 justice-system-involved male adolescents from the Crossroads Study (46% Latino, 37% Black, 15% White, and 2% self-identified other race). Results indicate that youth lower in impulse control were more likely to experience negative social, school/work, offending, legal, and physical consequences related to their substance use than youth higher in impulse control--even when comparing youth who used substances at the same frequency. The current results suggest that in addition to addressing substance use itself, treatment and intervention efforts could also target problems in impulse control to reduce the extent of the consequences that youth experience from using substances.