According to criminological literature, victimization tends to cluster among the same adolescents. Recent American studies have shown that the poly-victimized youth are different in terms of their whole victimization profile than those children with fewer or no victimization experiences. In this article poly-victimization is studied among Finnish sixth and ninth graders (n = 13,459) based on the Finnish Child Victim Survey 2008. The article will answer questions with regard to accumulation of victimization and its associations with children's psycho-social well-being. The study examines the individual and family level background characteristics which are related to poly-victimization. The accumulations of these risk factors are analyzed with poly-victimized children compared with less or non-victimized children. According to the analysis, poly-victimization exists among Finnish children and adolescents. In addition, the characteristics indicated as risk factors of victimization seem to accumulate among poly-victims. With cross-sectional data, no causal conclusions can be made, but poly-victimization is related to higher levels of psycho-social problems. The results confirm earlier findings of poly-victimization as a life condition. (Published Abstract)