Adolescents are often exposed to the lasting effects of political conflict. Complementing existing research on negative outcomes in these settings, this article focuses on the role of the family (N = 731 mother/adolescent dyads, 51% female, M = 14.72, SD = 1.99, years old at Time 1) in promoting constructive youth outcomes in response to perceived conflict in Northern Ireland. Exploratory factor analyses revealed two related forms of youth civic engagement: volunteerism and political participation. Structural equation modeling revealed that compared with males, female adolescents reported more volunteerism. Older adolescents reported higher political participation and lower volunteerism. Moreover, over three time points, the primary model test revealed that the impact of perceived political conflict on adolescent volunteerism and political engagement was partially mediated by family cohesion. These findings suggest that amid protracted political conflict, the family may be a key factor underlying adolescents' contributions to post-accord peacebuilding.