This document summarizes lessons learned about addressing the gender gap in Wikipedia and other Wikimedia projects in the global south. Some of the key challenges identified include a lack of region-specific or language-specific data, denial that a gender gap exists by some community members, women feeling a lack of gender competence and reluctance to acknowledge issues, unconscious sexism, a lack of female role models, and an absence of codes of conduct to encourage women's participation and make them feel welcome.