The Managing the Atom Project has received generous support from the following sources:
- John D. and Catherine T. MacArthur Foundation: The John D. and Catherine T. MacArthur Foundation is a private, independent grant making institution dedicated to helping groups and individuals foster lasting improvement in the human condition. Through the support it provides, the Foundation fosters the development of knowledge, nurtures individual creativity, helps strengthen institutions, participates in the formation of effective policy, and provides information to the public, primarily through support for public interest media.
- Nuclear Threat Initiative: NTI's mission is to strengthen global security by reducing the risk of use and preventing the spread of nuclear, biological and chemical weapons. NTI seeks to raise public awareness, serve as a catalyst for new thinking and take direct action to reduce these threats. In addition to Mr. Turner and Senator Nunn, NTI is guided by an experienced, international Board of Directors who share a common goal of taking action to reduce the gap between the global threats and the global response. The foundation's activities are directed by Senator Nunn and managed by President Joan Rohlfing, and President Emeritus Charles B. Curtis.
- The Ploughshares Fund: The Ploughshares Fund is a public grantmaking foundation that supports initiatives to prevent the spread and use of nuclear, biological and chemical weapons and other weapons of war, and to prevent conflicts that could lead to the use of weapons of mass destruction.
- Carnegie Corporation: The Carnegie Corporation supports policy relevant research and outreach to advance the further refinement and implementation of steps to reduce nuclear weapons and their proliferation risks; policy relevant research and outreach on the proliferation risks of international reliance on nuclear energy and the options available to governments to reduce the risks; and unofficial, multilateral policy discussions concerning North Korea and Iran.
- Ford Foundation: The Ford Foundation supported MTA research on regional nuclear proliferation challenges.
- Endowment funds of the Belfer Center for Science and International Affairs, and its Science, Technology, and Public Policy Program.