This study examines the moderating effects of gender, child abuse, and pathological narcissism on self-reported stalking, sexual harassment, intimate partner violence, and sexual aggression in undergraduate men and women. Child abuse was positively associated with engaging in all forms of interpersonal violence for both genders. For women, pathological narcissism moderated this association such that higher levels of pathological narcissism reduced the association between child abuse and engaging in stalking, sexual harassment, sexual aggression. For men. pathological narcissism exhibited independent positive associations with engagement in sexual harassment and sexual aggression and a negative association with engagement in intimate partner violence, but no moderating effects. These gender differences have important implications for the assessment of women's violence, and university violence prevention and advocacy programs.