This paper explores how while Bosnia and Herzegovina (BiH) has adopted various legislative initiatives to advance women’s representation, women still only hold a minority of elective seats. As a major regional player, the EU has significant leverage to advance women’s political participation and leadership in the country. This paper assesses the extent to which the EU and EU member states have supported women’s political participation in Bosnia and Herzegovina, based on their commitments in the previous EU Gender Action Plan (GAP) II. The paper concludes with lessons learnt and recommendations for strengthening the implementation of the new EU Gender Action Plan’s provisions on women’s political participation and leadership.