This article uses a global multilevel sample to advance our understanding of the gender gap in youth entrepreneurship by investigating the joint moderating influence of in-group support and national embeddedness values on young women's entrepreneurial activity relative to that of young men. Based on a mixed embeddedness theoretical lens, our moderation analysis demonstrates the importance of in-group support in narrowing the gender gap in youth entrepreneurship. Moreover, in-group support enhances young women's entrepreneurship vis-a-vis that of young men primarily in countries with strong embeddedness values. Our findings contribute to the entrepreneurial gender gap literature as well as to the comparative entrepreneurship literature, by providing evidence of the joint role of micro-level and macro-level cultural layers in reducing the entrepreneurial gender gap. Implications for theory, practice and policy are provided.