The present study examined depression among Japanese college students and its relationship to four types of aggression: physical aggression, verbal aggression, anger, and hostility. We used Japanese version of Aggression Questionnaire (Buss & Perry, 1992; Ando et al., 1999). Analysis of correlation coefficients of the data from 140 undergraduates showed that depression had a positive correlation with anger and hostility, while it showed a negative correlation with verbal aggression. The result suggested that college students with high depression tended to feel anger and hostility easily. However, they were less likely to show verbally aggressive behavior.