Where international nonviolence organizations have increasingly become key players in both the development and evaluation of effective nonviolent movements, little scholarly attention has been given to their role in transnational mobilization. In this chapter, I present new data on a growing population of nonviolent protest INGOs, a transnational nonviolence network, working to globally spread tactical knowledge and resources. To examine determinants of how this population has grown as a whole, I employ negative binomial regression analysis to weigh the effect of nonviolent protest, social movements, and world society theories on nonviolent INGO expansion. I then examine how this network and its ties to different world regions have changed over the latter half of the twentieth century. I find it has been most significantly shaped by the expansion of global political and civil society networks, global human rights work, and a global discourse about nonviolence. The purpose here is to expand knowledge of the global institutional foundations of transnational protest resources, opportunities, and discourse among nonviolent movements.