Introduction. Behavioral stereotypes learned in adolescence in the absence of self-control skills of aggressive behavior can lead to the formation of a stable destructive model of younger generation’s behavior, which destructively affects society. The purpose of the article is to study the specificity of manifestation of adolescents’ aggressive behavior in after-school team-game activities. The relevance of the article is determined by the significance of manifestations of adolescents’ aggressive behavior for the formation of selfcontrol skills of aggressive behavior and their insufficient knowledge of extracurricular team-game activities. Materials and Methods. The study was conducted on the basis of a survey aimed at identifying the patterns of adolescents’ aggressive behavior. To study the problem, a stating experiment was carried out, in which 456 teenage schoolchildren took part. The results were processed using the Kolmogorov – Smirnov criterion and the Mann – Whitney criterion. The calculations were performed using the IBM SPSS Statistics 21 software. Results. The findings showed that, compared with peers, adolescents participating in extracurricular teamgame activities have more evident indicators of physical, indirect aggression and negativity. The level of aggressiveness index, irritability and suspicion in the studied adolescents was lower compared to adolescents not involved in extracurricular activities. Differentiation of the characteristics of adolescents’ aggressive behavior in extracurricular team-game activities was revealed. Compared to their peers, teenage boys engaged in team-game activity showed lower values of the aggressiveness index, they are less irritable, suspicious and hostile, but they demonstrate greater physical aggression, including in its direct form. In turn, adolescent girls engaged in team-game activities are more likely to show physical and indirect aggression, negativity and resentment, and also show lower values of the index of aggressiveness and suspicion, they are less likely to show verbal aggression, but the degree of expression of direct verbal aggression is slightly higher among peers. Discussion and Conclusion.The performed study advocated the concept of specificity of adolescents’ aggressive manifestations in extracurricular team-game activities. The obtained results contribute to the development of the theory of aggressive behavior. This article may be useful to researchers and practitioners involved in organizing extracurricular activities of schoolchildren at a secondary school, as well as in conditions of socio-cultural recreation.