This article examines the “new professions” as alternative settings where women thought and wrote about the international. Presenting the case studies of Fannie Fern Andrews, Mary Parker Follett and Florence Wilson, it shows that, in emerging professional and disciplinary contexts that have hitherto lain beyond the purview of historians of international thought, these women developed their thinking about the international. The insights they derived from their practical work in schools, immigrant communities and libraries led them to emphasize the mechanics of participation in international affairs and caused them to think across the scales of the individual, the local group and relations between nations. By moving beyond the history of organizations and networks and instead looking for the professional settings and audiences which enabled women to theorize, this article shifts both established understandings of what counts as international thought and traditional conceptions of who counts as an international thinker.