AbstractThis article addresses second-wave feminist interventions in Canadian foreign policy debate with reference to two analytic streams: (1) political science and international relations (IR) perspectives since the late 1990s that stress the formal decisional aims of advocacy and the role of transnational networks in pressuring reluctant governments and (2) sociological approaches that underline movements’ cultural as well as statist dimensions and the significance of their domestic political strategies. Examining engagement by the Voice of Women (VOW) in nuclear weapons debates and National Action Committee on the Status of Women (NAC) in free trade controversies confirms sociological expectations of campaigners’ varied claims and contributions and the importance of their political rootedness in Canada. Consistent with political science and IR arguments, the study finds NAC paid growing attention to international political opportunities in 1990 and following. The conclusion considers implications of the analysis and directions for future research.