Family conflict and childhood anxiety has been implicated in the development of aggressive behaviors, but the nature of these relationships has not been fully explored. Thus, the present study examined the role of anxiety in moderating the relationship between family conflict and childhood aggression in 50 children aged 7 to 13 years. Specifically, the study proposed that family conflict would be positively related to aggression in the context of higher levels of child anxiety. Parents completed self-report instruments examining family conflict and aggressive behavior exhibited by their children. Children completed a self-report measure of anxiety. The hypothesis was partially supported as family conflict was related to increased proactive but not reactive aggression in children with high levels of anxiety. Implications of these findings are discussed. (Contains 5 tables and 1 figure.)