The Don't Bank on the Bomb project describes the involvement of 25 companies in the nuclear weapons industry, for which investments or financing relations with private financial institutions were identified. These companies are heavily involved in nuclear weapon programmes, providing key components or services that contribute to activities prohibited under the Treaty on the Prohibition of Nuclear Weapons, including the development, production, manufacture, possession and stockpiling of nuclear weapons. Such involvement may be related to warheads, or to specifically designed nuclear capable delivery systems, like missiles. 

Companies from China, France, India, Italy, the Netherlands, the Russian Federation, the United Kingdom and the United States are significantly involved in the production of nuclear weapons. Many of the companies involved have multi-year production contracts, totaling at least $200 billion and continuing for decades.

These are the publicly traded companies most significantly involved in nuclear weapons production:

• Airbus Group (The Netherlands)
• Amentum (United States)
• Babcock International (United Kingdom)
• BAE Systems plc (United Kingdom)
• Bechtel (United States)
• Bharat Dynamics Limited (India)
• Boeing (United States)
• BWX Technologies (United States)
• China Aerospace Science and Technology (China)
• Fluor (United States)
• General Dynamics (United States)
• Honeywell International (United States)
• Huntington Ingalls Industries (HII) (United States)
• L3Harris Technologies (United States)
• Leidos (United States)
• Leonardo (Italy)
• Lockheed Martin (United States)
• Northrop Grumman (United States)
• Peraton (United States)
• RTX (United States)
• Rolls-Royce (United Kingdom)
• Safran (France)
• Textron (United States)
• Thales (France)
• Walchandnagar Industries Limited (India)

See the Don't Bank on the Bomb report for more details about corporate involvement in the nuclear weapon industry.