The current study examined social dominance and peer victimization as possible intervening and moderating variables of the association between peer liking and relational aggression because previous findings suggest that social dominance and peer victimization are important for predicting the acceptableness and success of aggression. A total of 367 5th- and 6th-grade students from Quebec, Canada, completed peer ratings of their classmates on measures of peer liking, relational aggression, social dominance, and peer victimization. Hierarchical multiple regression analyses demonstrated that peer victimization worked as a mediator and a moderator, such that victimization explained the link between peer liking and relational aggression, and that this association was only significant at high levels of peer victimization. Alternatively, social dominance worked as a suppressor, with the link between peer liking and relational aggression becoming stronger once social dominance was controlled in the multiple regression. Social dominance did not moderate the same association. (Contains 2 tables and 2 figures.)