This research used data from 2800 14 to 15 year old participants in the Longitudinal Study of Australian Children to examine gender differences in the relationship between mother’s and father’s heavy episodic drinking and adolescent drinking. Parent heavy episodic drinking was a risk factor for adolescent drinking, even after controlling for other potential influences. Both mothers’ and fathers’ heavy episodic drinking significantly increased the likelihood of adolescent drinking. Fathers’ heavy drinking was more strongly related to adolescent drinking for girls, suggesting girls may be especially vulnerable to parent heavy drinking in early adolescence. This evidence should be considered when designing or evaluating family interventions to prevent adolescent drinking.