The international conference at the Leibniz Institute of European History discusses the relationship between gender and humanitarian discourses and practices in the twentieth century. In particular, it analyzes the ways in which constructions and ideologies of gender shaped and were shaped by humanitarian practices, interactions, ideas, bodies, and institutions on local, regional, national and/or global scales. By introducing the analytical category of gender into the historical study of humanitarianism, the conference discusses how (hierarchical) relations between men and women, social and cultural constructions of masculinity/femininity and gendered conceptions of human bodies worked out in the various types of humanitarian organizations (e.g. IOs, NGOs, networks, aid agencies, churches), campaigns, perceptions, works and subjectivities. Focusing on the time between the First World War and the end of the Cold War, the conference concentrates on a period that not only witnessed a great expansion of humanitarian action worldwide but also saw fundamental changes in gender relations and the gradual emergence of gender-sensitive policies in humanitarian organizations in many Western and non-Western settings.