The document summarizes evidence on interventions to prevent violence against women and girls. It finds that multi-sector programs that engage communities and address social norms are most effective. In low-middle income countries, programs combining approaches like training, livelihoods and social marketing show promise. In high-income countries, perpetrator programs and school-based interventions have conflicting or insufficient evidence. More rigorous evaluations are still needed, especially from the global south. Overall, preventing violence requires challenging its acceptability while supporting new skills and engaging all community members.