Twenty years since the adoption of the United Nations Security Council Resolution 1325 (UNSC 1325) on Women, Peace and Security (WPS), women remain underrepresented in peace processes. This underrepresentation has far-reaching consequences for the lives of many women and girls in post-conflict countries. The low participation of women in peacemaking and formal peace negotiations calls into question the legitimacy of the process itself, and the evidence shows that the lack of women’s meaningful inclusion at the peace table leads to less representation during peacebuilding actions. To address this persistent exclusion and to ensure opportunities for societies to become more gender-equal are not lost, there has been a rapid emergence of regional and international Women Mediator Networks (WMNs). Comprised of a diverse group of women from various backgrounds and with different expertise and experience, these networks have the potential to be a transformative mechanism for achieving the goals outlined in the WPS Agenda. Analysing the emergence of WMNs and their potential to rejuvenate the implementation of the WPS project, this Policy and Practice Brief (PPB) seeks to answer the following questions: Why are more WMNs emerging? What impact will these networks have? Where do they fit into the existing global framework and how do they engage with this framework?