Many conflicts in the Asia-Pacific region have included sexual violence crimes targeted primarily against women. However, in comparison to other regions, Asia-Pacific states have been reluctant to embrace international law innovations to end impunity for such crimes into the future, as evidenced by their unwillingness to become signatories to the Rome Statute of the International Criminal Court. Of the 39 countries constituting the Asia-Pacific region, only 17—less than half—have joined the Rome Statute. This article initially surveys some of the reasons for non-ratification of the Statute. It further examines the role of civil society and the potential normative impact of the Statute to enhance national sexual violence legislation and prosecutions. Finally, it identifies some practical steps that the Australian government could take to encourage regional states to ratify, implement and enforce the Rome Statute in order to further protect all victims of international crimes and bolster the broader Women, Peace and Security framework.