Treaty Banning Nuclear Weapon Tests in the Atmosphere, in Outer Space and Under Water

Signed by the Original Parties, the Union of Soviet Socialist Republics, the United Kingdom of Great Britain and 
Northern Ireland and the United States of America at Moscow: 5 August 1963 
 
Opened for signature at London, Moscow and Washington: 8 August 1963
 
Entered into force: 10 October 1963 
 
Depositary Governments: Russian Federation,United Kingdom of Great Britain and Northern Ireland and 
United States of America 
State Signature Deposit Deposit Type
Afghanistan 8 August 1963  
8 August 1963  
8 August 1963  
London
Moscow
Washington
12 March 1964  
13 March 1964  
23 March 1964  
London
Washington
Moscow
Ratification
Ratification
Ratification
Algeria 14 August 1963  
14 August 1963  
14 August 1963  
London
Moscow
Washington
Antigua and Barbuda 16 November 1988 *
26 December 1988 *
26 January 1989  
Washington
Moscow
London
Succession
Succession
Succession
Argentina 8 August 1963  
9 August 1963  
9 August 1963  
Washington
London
Moscow
14 November 1986  
17 November 1986  
21 November 1986  
London
Moscow
Washington
Ratification
Ratification
Ratification
Armenia 7 June 1994  
7 June 1994  
Moscow
Washington
Accession
Accession
Australia 8 August 1963  
8 August 1963  
8 August 1963  
London
Moscow
Washington
12 November 1963  
12 November 1963  
12 November 1963  
London
Moscow
Washington
Ratification
Ratification
Ratification
Austria 11 September 1963  
12 September 1963  
12 September 1963  
Washington
London
Moscow
17 July 1964  
17 July 1964  
17 July 1964  
London
Moscow
Washington
Ratification
Ratification
Ratification
Bahamas 11 August 1976  
13 August 1976 *
30 August 1976 *
London
Washington
Moscow
Succession
Succession
Succession
Bangladesh 11 March 1985  
12 March 1985  
13 March 1985  
Moscow
Washington
London
Accession
Accession
Accession
Belarus 8 October 1963  
Moscow
16 December 1963  
Moscow
Ratification
Belgium 8 August 1963  
8 August 1963  
8 August 1963  
London
Moscow
Washington
1 March 1966  
1 March 1966  
1 March 1966  
London
Moscow
Washington
Ratification
Ratification
Ratification
Benin 27 August 1963 *
3 September 1963 *
9 October 1963  
Washington
London
Moscow
15 December 1964  
23 December 1964  
22 April 1965  
Washington
Moscow
London
Ratification
Ratification
Ratification
Bhutan 8 June 1978  
Washington
Accession
Bolivia (Plurinational State of) 8 August 1963  
21 August 1963  
21 August 1963  
Washington
London
Moscow
4 August 1965  
4 August 1965  
25 January 1966  
Moscow
Washington
London
Ratification
Ratification
Ratification
Bosnia and Herzegovina 15 August 1994 *
Washington
Succession
Botswana 15 January 1968 *
14 February 1968  
4 March 1968 *
Moscow
London
Washington
Succession
Succession
Succession
Brazil 8 August 1963  
8 August 1963  
8 August 1963  
London
Moscow
Washington
15 December 1964  
15 January 1965  
4 March 1965  
Moscow
Washington
London
Ratification
Ratification
Ratification
Bulgaria 8 August 1963  
8 August 1963  
8 August 1963  
London
Moscow
Washington
13 November 1963  
21 November 1963  
2 December 1963  
Washington
Moscow
London
Ratification
Ratification
Ratification
Burkina Faso 30 August 1963  
Washington
Burundi 4 October 1963  
Washington
Cameroon 27 August 1963 *
6 September 1963 *
Washington
London
Canada 8 August 1963  
8 August 1963  
8 August 1963  
London
Moscow
Washington
28 January 1964  
28 January 1964  
28 January 1964  
London
Moscow
Washington
Ratification
Ratification
Ratification
Cape Verde 24 October 1979  
Moscow
Accession
Central African Republic 22 December 1964  
24 August 1965  
25 September 1965  
Washington
London
Moscow
Accession
Accession
Accession
Chad 26 August 1963  
Washington
1 March 1965  
Washington
Ratification
Chile 8 August 1963  
9 August 1963  
9 August 1963  
Washington
London
Moscow
6 October 1965  
London
Ratification
China 23 August 1963 *
Moscow
18 May 1964 *
Moscow
Ratification
Colombia 16 August 1963  
20 August 1963  
20 August 1963  
Washington
London
Moscow
17 October 1985 *
17 October 1985  
London
Washington
Ratification
Ratification
Costa Rica 9 August 1963  
13 August 1963  
23 August 1963  
London
Washington
Moscow
10 July 1967  
Washington
Ratification
Côte d'Ivoire 5 September 1963  
Washington
5 February 1965  
Washington
Ratification
Croatia 8 June 1993 *
Washington
Succession
Cyprus 8 August 1963  
8 August 1963  
8 August 1963  
London
Moscow
Washington
15 April 1965  
21 April 1965  
7 May 1965  
London
Moscow
Washington
Ratification
Ratification
Ratification
Czech Republic 1 January 1993 *
1 January 1993 *
5 April 1993 *
Moscow
Washington
London
Succession
Succession
Succession
Democratic Republic of the Congo 9 August 1963 *
9 August 1963  
12 August 1963  
London
Washington
Moscow
28 October 1965  
Washington
Ratification
Denmark 9 August 1963  
9 August 1963  
9 August 1963  
London
Moscow
Washington
15 January 1964  
15 January 1964  
15 January 1964  
London
Moscow
Washington
Ratification
Ratification
Ratification
Dominican Republic 16 September 1963  
17 September 1963  
17 September 1963  
Washington
London
Moscow
3 June 1964  
18 June 1964  
22 July 1964  
Moscow
London
Washington
Ratification
Ratification
Ratification
Ecuador 27 September 1963  
1 October 1963  
1 October 1963  
Washington
London
Moscow
6 May 1964  
8 May 1964  
13 November 1964  
Washington
London
Moscow
Ratification
Ratification
Ratification
Egypt 8 August 1963  
8 August 1963  
8 August 1963 *
London
Moscow
Washington
10 January 1964  
10 January 1964 *
10 January 1964  
London
Moscow
Washington
Ratification
Ratification
Ratification
El Salvador 21 August 1963  
22 August 1963  
22 August 1963  
Washington
London
Moscow
3 December 1964  
7 December 1964  
9 February 1965  
Washington
London
Moscow
Ratification
Ratification
Ratification
Equatorial Guinea 16 January 1989  
Moscow
Accession
Ethiopia 9 August 1963  
9 August 1963  
9 August 1963  
London
Moscow
Washington
Fiji 14 July 1972 *
18 July 1972 *
14 August 1972  
Moscow
Washington
London
Succession
Succession
Succession
Finland 8 August 1963  
8 August 1963  
8 August 1963  
London
Moscow
Washington
9 January 1964  
9 January 1964  
9 January 1964  
London
Moscow
Washington
Ratification
Ratification
Ratification
Gabon 10 September 1963  
Washington
20 February 1964  
4 March 1964 *
9 March 1964  
Washington
London
Moscow
Ratification
Ratification
Ratification
Gambia 27 April 1965 *
27 April 1965 *
6 May 1965  
Moscow
Washington
London
Succession
Succession
Succession
Germany 19 August 1963  
19 August 1963 *
19 August 1963  
London
Moscow
Washington
1 December 1964 *
1 December 1964 *
London
Washington
Ratification
Ratification
Ghana 9 August 1963  
4 September 1963  
4 September 1963  
Washington
London
Moscow
27 November 1963  
9 January 1964  
31 May 1965  
London
Washington
Moscow
Ratification
Ratification
Ratification
Greece 8 August 1963  
9 August 1963  
9 August 1963  
Washington
London
Moscow
18 December 1963  
18 December 1963  
18 December 1963  
London
Moscow
Washington
Ratification
Ratification
Ratification
Guatemala 23 September 1963 *
Washington
6 January 1964 *
Washington
Ratification
Guinea-Bissau 20 August 1976  
Moscow
Accession
Haiti 9 October 1963  
Washington
Honduras 8 August 1963  
15 August 1963  
15 August 1963  
Washington
London
Moscow
2 October 1964  
2 December 1964  
Washington
London
Ratification
Ratification
Hungary 8 August 1963  
8 August 1963  
8 August 1963  
London
Moscow
Washington
21 October 1963  
21 October 1963  
22 October 1963  
London
Moscow
Washington
Ratification
Ratification
Ratification
Iceland 12 August 1963  
12 August 1963  
12 August 1963  
London
Moscow
Washington
29 April 1964  
29 April 1964  
29 April 1964  
London
Moscow
Washington
Ratification
Ratification
Ratification
India 8 August 1963  
8 August 1963  
8 August 1963  
London
Moscow
Washington
10 October 1963  
14 October 1963  
18 October 1963  
London
Moscow
Washington
Ratification
Ratification
Ratification
Indonesia 23 August 1963  
23 August 1963  
23 August 1963  
London
Moscow
Washington
20 January 1964  
27 January 1964  
8 May 1964  
Moscow
Washington
London
Ratification
Ratification
Ratification
Iran (Islamic Republic of) 8 August 1963  
8 August 1963  
8 August 1963  
London
Moscow
Washington
5 May 1964  
5 May 1964  
5 May 1964  
London
Moscow
Washington
Ratification
Ratification
Ratification
Iraq 13 August 1963  
13 August 1963  
13 August 1963  
London
Moscow
Washington
30 November 1964  
1 December 1964  
3 December 1964  
London
Washington
Moscow
Ratification
Ratification
Ratification
Ireland 8 August 1963  
8 August 1963  
8 August 1963  
London
Moscow
Washington
18 December 1963  
18 December 1963  
20 December 1963  
London
Washington
Moscow
Ratification
Ratification
Ratification
Israel 8 August 1963  
8 August 1963  
8 August 1963  
London
Moscow
Washington
15 January 1964  
15 January 1964  
28 January 1964  
London
Washington
Moscow
Ratification
Ratification
Ratification
Italy 8 August 1963  
8 August 1963  
8 August 1963  
London
Moscow
Washington
10 December 1964  
10 December 1964  
10 December 1964  
London
Moscow
Washington
Ratification
Ratification
Ratification
Jamaica 13 August 1963  
13 August 1963  
13 August 1963  
London
Moscow
Washington
11 November 1991  
22 November 1991  
Moscow
Washington
Ratification
Ratification
Japan 14 August 1963  
14 August 1963  
14 August 1963  
London
Moscow
Washington
15 June 1964  
15 June 1964  
15 June 1964  
London
Moscow
Washington
Ratification
Ratification
Ratification
Jordan 12 August 1963  
12 August 1963  
12 August 1963  
London
Moscow
Washington
29 May 1964  
7 July 1964  
10 July 1964  
London
Moscow
Washington
Ratification
Ratification
Ratification
Kenya 10 June 1965  
11 June 1965  
30 June 1965  
London
Washington
Moscow
Accession
Accession
Accession
Kuwait 20 August 1963  
20 August 1963  
20 August 1963  
London
Moscow
Washington
20 May 1965 *
21 May 1965  
17 June 1965 *
Washington
London
Moscow
Ratification
Ratification
Ratification
Lao People's Democratic Republic 12 August 1963  
12 August 1963  
12 August 1963  
London
Moscow
Washington
10 February 1965  
12 February 1965  
7 April 1965  
London
Washington
Moscow
Ratification
Ratification
Ratification
Lebanon 12 August 1963  
13 August 1963  
13 August 1963  
Washington
London
Moscow
14 May 1965  
20 May 1965  
4 June 1965  
Washington
London
Moscow
Ratification
Ratification
Ratification
Liberia 8 August 1963  
16 August 1963  
16 August 1963  
Washington
London
Moscow
19 May 1964  
22 May 1964  
16 June 1964  
Washington
London
Moscow
Ratification
Ratification
Ratification
Libya 9 August 1963  
9 August 1963  
16 August 1963  
London
Moscow
Washington
15 July 1968  
London
Ratification
Luxembourg 13 August 1963  
3 September 1963  
13 September 1963  
London
Washington
Moscow
10 February 1965  
10 February 1965  
10 February 1965  
London
Moscow
Washington
Ratification
Ratification
Ratification
Madagascar 23 September 1963  
Washington
15 March 1965  
Washington
Ratification
Malawi 26 November 1964 *
29 November 1964 *
7 January 1965  
Moscow
Washington
London
Succession
Succession
Succession
Malaysia 8 August 1963  
12 August 1963  
21 August 1963  
Washington
London
Moscow
15 July 1964  
16 July 1964  
16 July 1964  
Moscow
London
Washington
Ratification
Ratification
Ratification
Mali 23 August 1963  
23 August 1963  
23 August 1963  
London
Moscow
Washington
Malta 25 November 1964 *
25 November 1964 *
1 December 1964  
Moscow
Washington
London
Succession
Succession
Succession
Mauritania 13 September 1963  
17 September 1963  
17 September 1963  
Washington
London
Moscow
6 April 1964  
15 April 1964  
28 April 1964  
Washington
London
Moscow
Ratification
Ratification
Ratification
Mauritius 30 April 1969 *
30 April 1969 *
12 May 1969  
Moscow
Washington
London
Succession
Succession
Succession
Mexico 8 August 1963  
8 August 1963  
8 August 1963  
London
Moscow
Washington
27 December 1963  
27 December 1963  
27 December 1963  
London
Moscow
Washington
Ratification
Ratification
Ratification
Mongolia 8 August 1963  
8 August 1963  
London
Moscow
1 November 1963  
7 November 1963  
Moscow
London
Ratification
Ratification
Montenegro 3 June 2006 *
3 June 2006 *
London
Moscow
Succession
Succession
Morocco 27 August 1963  
30 August 1963  
30 August 1963  
Washington
London
Moscow
1 February 1966  
18 February 1966  
21 February 1966  
London
Moscow
Washington
Ratification
Ratification
Ratification
Myanmar 14 August 1963  
14 August 1963  
14 August 1963  
London
Moscow
Washington
15 November 1963  
15 November 1963  
15 November 1963  
London
Moscow
Washington
Ratification
Ratification
Ratification
Nepal 26 August 1963  
26 August 1963  
30 August 1963  
London
Moscow
Washington
7 October 1964  
7 October 1964  
7 October 1964  
London
Moscow
Washington
Ratification
Ratification
Ratification
Netherlands 9 August 1963  
9 August 1963  
9 August 1963  
London
Moscow
Washington
14 September 1964  
14 September 1964 *
14 September 1964 *
London
Moscow
Washington
Ratification
Ratification
Ratification
New Zealand 8 August 1963  
8 August 1963  
8 August 1963  
London
Moscow
Washington
10 October 1963  
10 October 1963  
16 October 1963  
London
Washington
Moscow
Ratification
Ratification
Ratification
Nicaragua 13 August 1963  
13 August 1963  
13 August 1963  
London
Moscow
Washington
26 January 1965  
26 February 1965  
26 February 1965  
London
Moscow
Washington
Ratification
Ratification
Ratification
Niger 24 September 1963  
24 September 1963  
24 September 1963  
London
Moscow
Washington
3 July 1964  
6 July 1964  
9 July 1964  
Moscow
London
Washington
Ratification
Ratification
Ratification
Nigeria 2 September 1963  
4 September 1963  
2 September 1964  
London
Washington
Moscow
17 February 1967  
25 February 1967  
28 February 1967  
London
Moscow
Washington
Ratification
Ratification
Ratification
Norway 9 August 1963  
9 August 1963  
9 August 1963  
London
Moscow
Washington
21 November 1963  
21 November 1963  
21 November 1963  
London
Moscow
Washington
Ratification
Ratification
Ratification
Pakistan 14 August 1963  
14 August 1963  
14 August 1963  
London
Moscow
Washington
3 March 1988  
London
Ratification
Panama 20 September 1963  
Washington
24 February 1966  
Washington
Ratification
Papua New Guinea 27 October 1980  
13 November 1980 *
16 March 1981 *
London
Moscow
Washington
Succession
Succession
Succession
Paraguay 15 August 1963  
15 August 1963  
15 August 1963  
London
Moscow
Washington
Peru 23 August 1963  
23 August 1963  
23 August 1963  
London
Moscow
Washington
20 July 1964  
4 August 1964  
21 August 1964  
Washington
London
Moscow
Ratification
Ratification
Ratification
Philippines 8 August 1963  
8 August 1963  
8 August 1963  
London
Moscow
Washington
10 November 1965  
15 November 1965 *
8 February 1966  
London
Washington
Moscow
Ratification
Ratification
Ratification
Poland 8 August 1963  
8 August 1963  
8 August 1963  
London
Moscow
Washington
14 October 1963  
14 October 1963  
14 October 1963  
London
Moscow
Washington
Ratification
Ratification
Ratification
Portugal 9 October 1963  
9 October 1963  
London
Washington
Republic of Korea 30 August 1963  
30 August 1963  
London
Washington
24 July 1964 *
24 July 1964 *
London
Washington
Ratification
Ratification
Romania 8 August 1963  
8 August 1963  
8 August 1963  
London
Moscow
Washington
12 December 1963  
12 December 1963  
12 December 1963  
London
Moscow
Washington
Ratification
Ratification
Ratification
Russian Federation 5 August 1963  
5 August 1963  
5 August 1963  
London
Moscow
Washington
10 October 1963  
10 October 1963  
10 October 1963 *
London
Moscow
Washington
Ratification
Ratification
Ratification
Rwanda 19 September 1963  
Washington
22 October 1963  
16 December 1963  
27 December 1963  
London
Moscow
Washington
Ratification
Ratification
Ratification
Samoa 5 September 1963  
5 September 1963  
6 September 1963  
London
Moscow
Washington
15 January 1965  
19 January 1965  
8 February 1965  
Washington
London
Moscow
Ratification
Ratification
Ratification
San Marino 17 September 1963  
20 September 1963  
20 September 1963  
Washington
London
Moscow
3 July 1964  
9 July 1964  
27 November 1964  
London
Washington
Moscow
Ratification
Ratification
Ratification
Senegal 20 September 1963  
23 September 1963  
23 September 1963  
Washington
London
Moscow
6 May 1964  
12 May 1964  
2 June 1964  
London
Moscow
Washington
Ratification
Ratification
Ratification
Serbia 8 August 1963  
Moscow
31 January 1964 *
3 June 2006 *
Moscow
London
Ratification
Succession
Seychelles 12 March 1985  
14 March 1985  
8 April 1985  
London
Moscow
Washington
Accession
Accession
Accession
Sierra Leone 4 September 1963  
4 September 1963  
11 September 1963  
London
Moscow
Washington
21 February 1964  
4 March 1964  
29 April 1964  
London
Washington
Moscow
Ratification
Ratification
Ratification
Singapore 12 July 1968  
12 July 1968 *
23 July 1968  
Moscow
Washington
London
Succession
Succession
Succession
Slovakia 1 January 1993 *
1 January 1993 *
17 May 1993 *
Moscow
Washington
London
Succession
Succession
Succession
Slovenia 7 April 1992  
20 August 1992 *
London
Washington
Succession
Succession
Somalia 19 August 1963  
19 August 1963  
Moscow
Washington
South Africa 10 October 1963  
10 October 1963  
22 November 1963  
London
Washington
Moscow
Accession
Accession
Accession
Spain 13 August 1963  
14 August 1963  
Washington
London
17 December 1964  
17 December 1964  
London
Washington
Ratification
Ratification
Sri Lanka 22 August 1963  
22 August 1963  
23 August 1963  
London
Washington
Moscow
5 February 1964  
12 February 1964  
13 February 1964  
Washington
Moscow
London
Ratification
Ratification
Ratification
Sudan 9 August 1963  
9 August 1963  
9 August 1963  
London
Moscow
Washington
4 March 1966  
4 March 1966  
28 March 1966  
London
Washington
Moscow
Ratification
Ratification
Ratification
Suriname 6 January 1993  
9 April 1993  
London
Washington
Accession
Accession
Swaziland 29 May 1969  
29 May 1969  
3 June 1969  
London
Washington
Moscow
Accession
Accession
Accession
Sweden 12 August 1963  
12 August 1963  
12 August 1963  
London
Moscow
Washington
9 December 1963  
9 December 1963  
9 December 1963  
London
Moscow
Washington
Ratification
Ratification
Ratification
Switzerland 26 August 1963  
26 August 1963  
26 August 1963  
London
Moscow
Washington
16 January 1964  
16 January 1964  
16 January 1964  
London
Moscow
Washington
Ratification
Ratification
Ratification
Syrian Arab Republic 13 August 1963  
13 August 1963  
13 August 1963  
London
Moscow
Washington
1 June 1964  
1 June 1964  
1 June 1964  
London
Moscow
Washington
Ratification
Ratification
Ratification
Thailand 8 August 1963  
8 August 1963  
8 August 1963  
London
Moscow
Washington
15 November 1963  
21 November 1963  
29 November 1963  
London
Moscow
Washington
Ratification
Ratification
Ratification
Togo 18 September 1963  
Washington
7 December 1964  
Washington
Ratification
Tonga 22 June 1971 *
7 July 1971  
7 July 1971 *
Moscow
London
Washington
Succession
Succession
Succession
Trinidad and Tobago 12 August 1963  
12 August 1963  
12 August 1963  
London
Moscow
Washington
14 July 1964  
16 July 1964  
6 August 1964  
Washington
London
Moscow
Ratification
Ratification
Ratification
Tunisia 8 August 1963  
12 August 1963  
12 August 1963  
Washington
London
Moscow
26 May 1965  
26 May 1965  
3 June 1965  
London
Moscow
Washington
Ratification
Ratification
Ratification
Turkey 9 August 1963  
9 August 1963  
9 August 1963  
London
Moscow
Washington
8 July 1965  
8 July 1965  
8 July 1965  
London
Moscow
Washington
Ratification
Ratification
Ratification
Uganda 29 August 1963  
29 August 1963  
London
Washington
24 March 1964  
2 April 1964  
London
Washington
Ratification
Ratification
Ukraine 8 October 1963  
Moscow
30 December 1963  
Moscow
Ratification
United Kingdom of Great Britain and Northern Ireland 5 August 1963  
5 August 1963  
5 August 1963  
London
Moscow
Washington
10 October 1963 *
10 October 1963  
10 October 1963  
London
Moscow
Washington
Ratification
Ratification
Ratification
United Republic of Tanzania 16 September 1963  
18 September 1963  
20 September 1963  
London
Washington
Moscow
6 February 1964  
London
Ratification
United States of America 5 August 1963  
5 August 1963  
5 August 1963  
London
Moscow
Washington
10 October 1963  
10 October 1963  
10 October 1963  
London
Moscow
Washington
Ratification
Ratification
Ratification
Uruguay 12 August 1963  
27 September 1963  
27 September 1963  
Washington
London
Moscow
25 February 1969  
London
Ratification
Venezuela (Bolivarian Republic of) 16 August 1963  
20 August 1963  
20 August 1963  
Washington
London
Moscow
22 February 1965  
3 March 1965  
29 March 1965  
Moscow
London
Washington
Ratification
Ratification
Ratification
Yemen 1 June 1979 *
Moscow
Accession
Zambia 11 January 1965 *
11 January 1965 *
8 February 1965  
Moscow
Washington
London
Succession
Succession
Succession

* A note, statement, declaration, or reservation, is attached to the signature or depository action. Click on the action date to view the details.

  Glossary of treaty-related terms

Number of Signatory States: 105
Number of States Parties: 126