Sociopolitical values are hypothesized to form during adolescence, but the developmental and contextual origins of these values have been largely unexplored. A sample of 846 adolescents (M_age = 15.96, SD = 1.22, range = 13-20 years) reported on their organized activity involvement (volunteering, sports, church, community clubs, arts/music, school clubs) and their sociopolitical values (patriotism, authoritarianism, spirituality, social dominance, materialism). Structural equation models (controlling for demographics and accounting for shared variance among variables) indicated that there were unique associations between activities and values. Greater church and sports involvement was related to higher levels of spirituality. Involvement in sports was also related to higher levels of materialism and authoritarianism. Greater volunteer involvement was related to lower social dominance, and involvement in arts/music was associated with less patriotism. These findings suggest that organized activity involvement may provide a context for adolescents’ developing sociopolitical values. Implications and future directions are discussed.