This article analyses the law-making power of international sports federations, with a specific focus on their authority of shaping global norms on gender. It explores a variety of international sporting rules from feminist and queer perspectives. These include the ban of rainbow armbands at the 2022 FIFA (Men’s) World Cup, rules on the participation of transgender persons in rugby, gendered and racialized uniform regulations in sports, and the Semenya case concerning the sports participation of women with variations in sex characteristics The analysis asserts that despite being non-state actors, international sports federations are de facto international lawmakers that disseminate hegemonic gender norms reflecting cis-hetero-sexism and white body norms. However, analysing the Semenya case and the decision of the Chamber of the European Court of Human Rights in the case shows that the law-making power of international sports federations in shaping gender norms is not absolute but embedded in a transnational network of norms. The article concludes that subjecting international sports federations to a feminist, queer, and anti-racist legal analysis assists in understanding how hegemonic norms on gender circulate transnationally and enhances knowledge on how international law works in practice.