The purpose of this study was two-fold. First, we sought to examine how maternal and paternal problem drinking impacts adolescent externalizing behaviors over time. Second, we examined the role that family functioning plays in the relationship between parental problem drinking and adolescent externalizing outcomes. Importantly, we explored these relationships by adolescent and parent gender, given that research has highlighted the unique role of maternal and paternal drinking for adolescent girls and boys (Christensen & Bilenberg, 2000; Coffelt et al., 2006; Ohannessian, 2012; 2013).