•
The ATOM Project, international nonprofit organization seeking entry into force of the Nuclear Nonproliferation Treaty and the limitation of all nuclear arsenals. •
European Nuclear Disarmament, held annual conventions in the 1980s involving thousands of anti-nuclear weapons activists mostly from Western Europe but also from Eastern Europe, the United States, and Australia. •
Global Zero, international non-partisan group of 300
world leaders dedicated to achieving the elimination of nuclear weapons. •
Global Initiative to Combat Nuclear Terrorism, international partnership of 83 nations. •
Greenpeace International,
non-governmental environmental organization with offices in over 41 countries and headquarters in
Amsterdam,
Netherlands. •
International Campaign to Abolish Nuclear Weapons •
International Network of Engineers and Scientists for Global Responsibility •
International Physicians for the Prevention of Nuclear War, had affiliates in 41 nations in 1985, representing 135,000 physicians; •
Nihon Hidankyo, was awarded the
Noble Peace Prize in 2024 •
Nuclear Free World Policy •
Nuclear Information and Resource Service •
OPANAL •
Parliamentarians for Nuclear Non-Proliferation and Disarmament, global network of over 700 parliamentarians from more than 75 countries working to prevent nuclear proliferation. •
Pax Christi International,
Catholic group which took a "sharply anti-nuclear stand". •
Ploughshares Fund •
Pugwash Conferences on Science and World Affairs •
Socialist International, world body of social democratic parties. •
The Ribbon International, United Nations Non-Governmental Organization promoting
nuclear disarmament. •
United Nations Office for Disarmament Affairs •
World Constitution and Parliament Association •
World Constitution Coordinating Committee •
World Disarmament Campaign ==List of other organizations==