This first anthology of women's international thought explores how women transformed the practice of international relations, from the early to mid-twentieth century. Revealing a major distortion in current understandings of the history and theory of international relations, this anthology offers an alternative 'archive' of international thought. By including women as international thinkers it demonstrates their centrality to early international relations discourses in and on the Anglo-American world order and how they were excluded from its history and conceptualization. Encompassing one hundred and four selections by ninety-two different thinkers, including Anna Julia Cooper, Margaret Sanger, Rosa Luxemburg, Judith Shklar, Hannah Arendt, Merze Tate, Susan Strange, Lucy P. Mair and Claudia Jones, it covers the widest possible range of subject matter, genres, ideological and political positions, and professional contexts. Organised into thirteen thematic sections, each with a substantial introductory essay, the anthology provides intellectual, political, biographical context, and original arguments, showing women's significance in international thought.