This study examined the relationship between dissociative tendencies and aggressive behaviors in adolescents. The Dissociative Experiences Scale (DES) and the Picture-Frustration (P–F) Study were administered to 60 vocational school students (28 men and 32 women; M =20.4 years). Simple correlation analysis indicated that the DES had negative correlations with obstacle-dominance and im-aggression, and had a positive correlation with extra-aggression from the P–F Study. Among the subscales of the DES, depersonalization was most related to aggressive behaviors. The results suggest that adolescents who have high dissociative tendencies are inclined to show aggression toward others directly.