This study uses longitudinal data from an ethnically diverse sample of 300 ninth grade students to examine the moderating effect of parenting practices upon the relationship between gang involvement and adolescent problem behavior. Results of hierarchical linear modeling indicate that gang involvement is a highly significant positive predictor of each of three categories of problem behavior (minor delinquency, major delinquency, and substance use). Three of the four parenting variables (behavioral control, psychological control, parent-adolescent conflict, and warmth) are found to moderate the relationship between gang involvement and problem behavior, with the most consistent effects found for behavioral control and warmth. These findings indicate that intervention efforts aimed at reducing the impact of gang involvement on adolescent development should consider factors that may decrease the deleterious behavioral outcomes associated with youth gangs.