This chapter focuses on the Associated Countrywomen of the World (ACWW) as an organization on a transnational scale, which contributed to rural mobilization, coordination and (self-)organization in the interwar years. It examines how the ACWW's interwar activities fit into the wider frame of international rural governance, that is, the process by which organizations and associations contested and/or contributed to the policies and practices of social and economic planning for rural areas. The chapter traces the ACWW's search for common denominators that might foster a sense of communality between its member organizations. It explains how the ACWW constituted its authority in an international context by connecting with a wide range of national countrywomen's organizations and with government institutions, international agricultural organizations and renowned agricultural scientists. By the end of World War II, the relationship between agricultural production and food and nutrition had become a central focus for the ACWW and it shaped the organization's place in the emerging postwar international system.