- Mayors for Peace Secretariat
- The International Campaign to Abolish Nuclear Weapons (ICAN)
- Stockholm International Peace Research Institute (SIPRI)
- Nuclear Free Local Authorities (NFLA)
- Maires pour la Paix France (AFCDRP)
- United Cities and Local Governments (UCLG)
- Global Parliament of Mayors
- Parliamentarians for Nuclear Non-Proliferation and Disarmament (PNND)