ABSTRACT The assumption that peace mediation is gender-neutral reproduces and reinforces the already gendered aftermath(s) of war. Peace mediation is a multilayered conflict resolution mechanism that ranges from grassroots peacebuilding to high-level diplomacy. As a ‘language of peace’, international law has become foundational in high-level peace mediation processes and institutions. International legal feminist and queer theory are critical of international law for its gendered and heteronormative frameworks that reinforce the binaries of war/peace, masculine/feminine or heterosexual/homosexual. Global governance gender law reforms, such as the Women, Peace and Security agenda, are part of the institutional frameworks that guide peace mediation processes. High-level peace mediators are also members of an ‘epistemic community’ regulated by international and regional organisations. The article analyses how masculine and heteronormative international legal institutions and experts shape peace mediation’s already gendered processes and outcomes. The article concludes that contemporary peace mediation approaches must be rethought and that alternatives to the traditional peace table must be imagined.