This paper set out to provide a conceptual understanding of the gender socialization process during adolescence, its influences and outcomes, and practical suggestions on how to use this knowledge in the design of policies and programmes to improve gender equality. First, theoretical contributions from psychology, sociology and biology were reviewed to situate the gender socialization process during adolescence in a broader context of multi-level influences. Second, a socio-ecological framework was introduced to bring together the main factors that influence the gender socialization process and its outcomes. Third, knowledge on howto influence the gender socialization process and its outcomes was summarized in order to provide practical recommendations for policies and programmes.