The Association of Southeast Asian Nations (ASEAN) Secretariat and its member states have repeatedly professed their commitment to the protection and advancement of women's economic and human rights. Such commitments have included the Declaration of the Advancement of Women in the ASEAN Region in 1988, the Declaration on the Elimination of Violence against Women in the ASEAN Region in 2004, and the ASEAN Human Rights Declaration in 2012, as well as the establishment of the ASEAN Committee on Women in 2002 and the ASEAN Commission on the Promotion and Protection of Women and Children in 2009. However, none of these regional commitments or institutions expressly take up the core concern of the Women, Peace and Security agenda set out in United Nations Security Council Resolution 1325 in 2000. ASEAN has no 1325 regional action plan and, amongst the ASEAN membership, the Philippines is the only state that has adopted a 1325 National Action Plan. The authors explore the possible reasons for the lack of ASEAN institutional engagement with 1325, outline the case for regional engagement, and suggest specific roles for the ASEAN Secretariat, donor governments and individual member states to commit to United Nations Security Council Resolution 1325 as a regional priority.