As social movements engage in transnational legal processes, they have articulated innovative rights claims outside the nation-state frame. This chapter analyzes emerging practices of legal mobilization in response to global governance through a case study of the "right to food sovereignty." The claim of food sovereignty has been mobilized transnationally by smallscale food producers, food-chain workers, and the food insecure to oppose the liberalization of food and agriculture. The author analyzes the formation of this claim in relation to the rise of a "network imaginary" of global governance. By drawing on ethnographic research, the author shows how activists have internalized this imaginary within their claims and practices of legal mobilization. In doing so, the author argues, transnational food sovereignty activists co-constitute global food governance from below. Ultimately, the development of these practices in response to shifting forms of transnational legality re ects the enduring, mutually constitutive relationship between law and social movements on a global scale.