The Central Asian Nuclear-Weapon-Free Zone (CANWFZ) treaty is a legally binding commitment by Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan, and Uzbekistan not to manufacture, acquire, test, or possess nuclear weapons.

The treaty was ratified by Kyrgyzstan, Uzbekistan,[1] Turkmenistan[2] Tajikistan[3] and Kazakhstan, and entered into force 21 March 2009.

A resolution calling for the establishment of such a zone was adopted by consensus by the United Nations General Assembly in 1997[6] and reaffirmed in 2000.

[7] Mindful of the lack of support by the nuclear powers for a similar Southeast Asian Nuclear-Weapon-Free Zone Treaty, the five permanent members of the Security Council were involved in the negotiations.

[9] The United States also objected to possibility that Iran could apply to join the Treaty, so this provision was removed.