Arms control & security
Treaty on the Prohibition of Nuclear Weapons
Source: UN Treaty Collection · scraped 2026-09-26
Figures below count the 193 UN member states separately from other parties to this treaty (international organizations and non-member observer states) — a treaty can have more parties than there are UN member states.
71/193
RatifiedUN member states
75 in total, incl. 4 non-UN members (Cook Islands, Holy See, Niue, State of Palestine)
26
Signed, not ratifiedUN member states
0
WithdrawnUN member states
96
No actionUN member states
| Country | Signature | Ratification | Withdrawal | Status |
|---|---|---|---|---|
| Antigua and Barbuda | 2018-09-26 | 2019-11-25 | — | Ratified |
| Austria | 2017-09-20 | 2018-05-08 | — | Ratified |
| Bangladesh | 2017-09-20 | 2019-09-26 | — | Ratified |
| Belize | 2020-02-06 | 2020-05-19 | — | Ratified |
| Benin | 2018-09-26 | 2020-12-11 | — | Ratified |
| Bolivia | 2018-04-16 | 2019-08-06 | — | Ratified |
| Botswana | 2019-09-26 | 2020-07-15 | — | Ratified |
| Cabo Verde | 2017-09-20 | 2022-06-20 | — | Ratified |
| Cambodia | 2019-01-09 | 2021-01-22 | — | Ratified |
| Chile | 2017-09-20 | 2021-09-23 | — | Ratified |
| Comoros | 2017-09-20 | 2021-02-19 | — | Ratified |
| Congo | 2017-09-20 | 2022-05-17 | — | Ratified |
| Cook IslandsNon-UN member | — | 2018-09-04(Accession) | — | Ratified |
| Costa Rica | 2017-09-20 | 2018-07-05 | — | Ratified |
| Cuba | 2017-09-20 | 2018-01-30 | — | Ratified |
| Côte d'Ivoire | 2017-09-20 | 2022-03-23 | — | Ratified |
| Democratic Republic of the Congo | 2017-09-20 | 2022-09-22 | — | Ratified |
| Dominica | 2019-09-26 | 2019-10-18 | — | Ratified |
| Dominican Republic | 2018-06-07 | 2022-09-22 | — | Ratified |
| Ecuador | 2017-09-20 | 2019-09-25 | — | Ratified |
| El Salvador | 2017-09-20 | 2019-01-30 | — | Ratified |
| Fiji | 2017-09-20 | 2020-07-07 | — | Ratified |
| Gambia | 2017-09-20 | 2018-09-26 | — | Ratified |
| Ghana | 2017-09-20 | 2025-09-26 | — | Ratified |
| Grenada | 2019-09-26 | 2022-06-20 | — | Ratified |
| Guatemala | 2017-09-20 | 2022-06-13 | — | Ratified |
| Guinea-Bissau | 2018-09-26 | 2021-12-15 | — | Ratified |
| Guyana | 2017-09-20 | 2017-09-20 | — | Ratified |
| Holy SeeNon-UN member | 2017-09-20 | 2017-09-20 | — | Ratified |
| Honduras | 2017-09-20 | 2020-10-24 | — | Ratified |
| Indonesia | 2017-09-20 | 2024-09-24 | — | Ratified |
| Ireland | 2017-09-20 | 2020-08-06 | — | Ratified |
| Jamaica | 2017-12-08 | 2020-10-23 | — | Ratified |
| Kazakhstan | 2018-03-02 | 2019-08-29 | — | Ratified |
| Kiribati | 2017-09-20 | 2019-09-26 | — | Ratified |
| Lao People's Democratic Republic | 2017-09-21 | 2019-09-26 | — | Ratified |
| Lesotho | 2019-09-26 | 2020-06-06 | — | Ratified |
| Malawi | 2017-09-20 | 2022-06-29 | — | Ratified |
| Malaysia | 2017-09-20 | 2020-09-30 | — | Ratified |
| Maldives | 2019-09-26 | 2019-09-26 | — | Ratified |
| Malta | 2020-08-25 | 2020-09-21 | — | Ratified |
| Mexico | 2017-09-20 | 2018-01-16 | — | Ratified |
| Mongolia | — | 2021-12-10(Accession) | — | Ratified |
| Namibia | 2017-12-08 | 2020-03-20 | — | Ratified |
| Nauru | 2019-11-22 | 2020-10-23 | — | Ratified |
| New Zealand | 2017-09-20 | 2018-07-31 | — | Ratified |
| Nicaragua | 2017-09-22 | 2018-07-19 | — | Ratified |
| Nigeria | 2017-09-20 | 2020-08-06 | — | Ratified |
| NiueNon-UN member | — | 2020-08-06(Accession) | — | Ratified |
| Palau | 2017-09-20 | 2018-05-03 | — | Ratified |
| Panama | 2017-09-20 | 2019-04-11 | — | Ratified |
| Paraguay | 2017-09-20 | 2020-01-23 | — | Ratified |
| Peru | 2017-09-20 | 2021-12-23 | — | Ratified |
| Philippines | 2017-09-20 | 2021-02-18 | — | Ratified |
| Samoa | 2017-09-20 | 2018-09-26 | — | Ratified |
| San Marino | 2017-09-20 | 2018-09-26 | — | Ratified |
| Sao Tome and Principe | 2017-09-20 | 2024-01-15 | — | Ratified |
| Seychelles | 2018-09-26 | 2021-07-09 | — | Ratified |
| Sierra Leone | 2022-09-22 | 2024-09-24 | — | Ratified |
| Solomon Islands | 2024-09-24 | 2024-09-24 | — | Ratified |
| South Africa | 2017-09-20 | 2019-02-25 | — | Ratified |
| Sri Lanka | — | 2023-09-19(Accession) | — | Ratified |
| Saint Kitts and Nevis | 2019-09-26 | 2020-08-09 | — | Ratified |
| Saint Lucia | 2018-09-27 | 2019-01-23 | — | Ratified |
| Saint Vincent and the Grenadines | 2017-12-08 | 2019-07-31 | — | Ratified |
| State of PalestineNon-UN member | 2017-09-20 | 2018-03-22 | — | Ratified |
| Thailand | 2017-09-20 | 2017-09-20 | — | Ratified |
| Timor-Leste | 2018-09-26 | 2022-06-20 | — | Ratified |
| Tonga | — | 2026-07-07(Accession) | — | Ratified |
| Trinidad and Tobago | 2019-09-26 | 2019-09-26 | — | Ratified |
| Tuvalu | 2017-09-20 | 2020-10-12 | — | Ratified |
| Uruguay | 2017-09-20 | 2018-07-25 | — | Ratified |
| Vanuatu | 2017-09-20 | 2018-09-26 | — | Ratified |
| Venezuela | 2017-09-20 | 2018-03-27 | — | Ratified |
| Viet Nam | 2017-09-22 | 2018-05-17 | — | Ratified |