A recurring claim in the literature is that civic engagement in voluntary associations is crucial for the formation of a variety of interpersonal attitudes, such as social trust, tolerance, and intolerance. In this article, we study the role of membership in voluntary associations and volunteer work in the development of anti-immigrant attitudes among adolescents. Using a four-wave longitudinal design with a target sample comprising approximately 2000 adolescents between the ages of 13 and 16 at the first measurement occasion, this study contributes to previous research by analysing the impact on anti-immigrant attitudes of different dimensions of membership in voluntary associations and volunteer work. The results showed that membership in voluntary associations and volunteer work over several years serve to decrease anti-immigrant attitudes among adolescents over time. In addition, volunteering over several years seems to have a somewhat stronger impact on anti-immigrant attitudes than do various aspects of membership in associations. Our study also shows that anti-immigrant attitudes become more firmly established with age and that membership in only certain types of voluntary associations relates to attitudes toward immigrants. In sum, this study contributes to previous research focusing on the role of civic engagement in the development of interpersonal attitudes.