This study draws on three case countries – Nepal, Sierra Leone and South Sudan – to address gaps in evidence and understanding on violence against women and girls (VAWG) during post-conflict transition. It highlights the potential for state-building and peacebuilding processes to address VAWG, and the effect this has in advancing sustainable peace. This is the first time that a systematic approach has been taken to bridge the gap between VAWG and post-conflict state-building / peace-building policies and processes. The study was led by the George Washington Institute (GWI), CARE International UK and International Rescue Committee (IRC), and was conducted as part of the What Works to Prevent VAWG in Conflict and Humanitarian Crises programme, funded by UK aid.