ACUNS is a global professional association of educational and research institutions, individual scholars, and practitioners active in the work and study of the United Nations, multilateral relations, global governance, and international cooperation. We promote teaching on these topics, as well as dialogue and mutual understanding across and between academics, practitioners, civil society and students.

ACUNS also has Institutional Members across the world. Institutional members represent a diverse range of universities, research centres, think tanks, NGOs, and related organizations. From 2005, Environmental Ambassadors for Sustainable Development is ACUNS Institutional Member.