Afghanistan - Nov 19, 1946
Albania - Dec 14, 1955
Algeria - Oct 8, 1962
Andorra - July 28, 1993
Angola - Dec 1, 1976
Antigua and Barbuda - Nov 11, 1981
Argentina - Oct 24, 1945 (original UN member)
Armenia - March 2, 1992
Australia - Nov 1, 1945 (original UN member)
Austria - Dec 14, 1955
Azerbaijan - March 2, 1992
The Bahamas - Sept 18, 1973
Bahrain - Sept 21, 1971
Bangladesh - Sept 17, 1974
Barbados - Dec 9, 1966
Belarus - Oct 24, 1945 (original UN member)
Belgium - Dec 27, 1945 (original UN member)
Belize - Sept 25, 1981
Benin - Sept 20, 1960
Bhutan - Sept 21, 1971
Bolivia - Nov 14, 1945 (original UN member)
Bosnia and Herzegovina - May 22, 1992
Botswana - Oct 17, 1966
Brazil - Oct 24, 1945 (original UN member)
Brunei - Sept 21, 1984
Bulgaria - Dec 14, 1955
Burkina Faso - Sept 20, 1960
Burundi - Sept 18, 1962
Cambodia - Dec 14, 1955
Cameroon - Sept 20, 1960
Canada - Nov 9, 1945 (original UN member)
Cape Verde - Sept 16, 1975
Central African Republic - Sept 20, 1960
Chad - Sept 20, 1960
Chile - Oct 24, 1945 (original UN member)
China - Oct 25, 1971*
Colombia - Nov 5, 1945 (original UN member)
Comoros - Nov 12, 1975
Republic of the Congo - Sept 20, 1960
Democratic Republic of the Congo - Sept 20, 1960
Costa Rica - Nov 2, 1945 (original UN member)
Cote d'Ivoire - Sept 20, 1960
Croatia - May 22, 1992
Cuba - Oct 24, 1945 (original UN member)
Cyprus - Sept 20, 1960
Czech Republic - Jan 19, 1993
Denmark - Oct 24, 1945 (original UN member)
Djibouti - Sept 20, 1977
Dominica - Dec 18, 1978
Dominican Republic - Oct 24, 1945 (original UN member)
East Timor - Sept 22, 2002
Ecuador - Dec 21, 1945 (original UN member)
Egypt - Oct 24, 1945 (original UN member)
El Salvador - Oct 24, 1945 (original UN member)
Equatorial Guinea - Nov 12, 1968
Eritrea - May 28, 1993
Estonia - Sept 17, 1991
Ethiopia - Nov 13, 1945 (original UN member)
Fiji - Oct 13, 1970
Finland - Dec 14, 1955
France - Oct 24, 1945 (original UN member)
Gabon - Sept 20, 1960
The Gambia - Sept 21, 1965
Georgia - July 31, 1992
Germany - Sept 18, 1973
Ghana - March 8, 1957
Greece - Oct 25, 1945 (original UN member)
Grenada - Sept 17, 1974
Guatemala - Nov 21, 1945 (original UN member)
Guinea - Dec 12, 1958
Guinea-Bissau - Sept 17, 1974
Guyana - Sept 20, 1966
Haiti - Oct 24, 1945 (original UN member)
Honduras - Dec 17, 1945 (original UN member)
Hungary - Dec 14, 1955
Iceland - Nov 19, 1946
India - Oct 30, 1945 (original UN member)
Indonesia - Sept 28, 1950
Iran - Oct 24, 1945 (original UN member)
Iraq - Dec 21, 1945 (original UN member)
Ireland - Dec 14, 1955
Israel - May 11, 1949
Italy - Dec 14, 1955
Jamaica - Sept 18, 1962
Japan - Dec 18, 1956
Jordan - Dec 14, 1955
Kazakhstan - March 2, 1992
Kenya - Dec 16, 1963
Kiribati - Sept 14, 1999
Korea, North - Dec 17, 1991
Korea, South - Dec 17, 1991
Kuwait - May 14, 1964
Kyrgyzstan - March 2, 1992
Laos - Dec 14, 1955
Latvia - Sept 17, 1991
Lebanon - Oct 24, 1945 (original UN member)
Lesotho - Oct 17, 1966
Liberia - Nov 2, 1945 (original UN member)
Libya - Dec 14, 1955
Liechtenstein - Sept 18, 1990
Lithuania - Sept 17, 1991
Luxembourg - Oct 24, 1945 (original UN member)
Macedonia - April 8, 1993
Madagascar - Sept 20, 1960
Malawi - Dec 1, 1964
Malaysia - Sept 17, 1957
Maldives - Sept 21, 1965
Mali - Sept 28, 1960
Malta - Dec 1, 1964
Marshall Islands - Sept 17, 1991
Mauritania - Oct 27, 1961
Mauritius - April 24, 1968
Mexico - Nov 7, 1945 (original UN member)
Micronesia, Federated States of - Sept 17, 1991
Moldova - March 2, 1992
Monaco - May 28, 1993
Mongolia - Oct 27, 1961
Montenegro - June 28, 2006
Morocco - Nov 12, 1956
Mozambique - Sept 16, 1975
Myanmar (Burma) - April 19, 1948
Namibia - April 23, 1990
Nauru - Sept 14, 1999
Nepal - Dec 14, 1955
Netherlands - Dec 10, 1945 (original UN member)
New Zealand - Oct 24, 1945 (original UN member)
Nicaragua - Oct 24, 1945 (original UN member)
Niger - Sept 20, 1960
Nigeria - Oct 7, 1960
Norway - Nov 27, 1945 (original UN member)
Oman - Oct 7, 1971
Pakistan - Sept 30, 1947
Palau - Dec 15, 1994
Panama - Nov 13, 1945 (original UN member)
Papua New Guinea - Oct 10, 1945
Paraguay - Oct 24, 1945 (original UN member country)
Peru - Oct 31, 1945 (original UN member)
Philippines - Oct 24, 1945 (original UN member)
Poland - Oct 24, 1945
Portugal - Dec 14, 1955
Qatar - Sept 21, 1977
Romania - Dec 14, 1955
Russia - Oct 24, 1945 (original UN member)
Rwanda - Sept 18, 1962
Saint Kitts and Nevis - Sept 23, 1983
Saint Lucia - Sept 18, 1979
Saint Vincent and the Grenadines - Sept. 16, 1980
Samoa - Dec 15, 1976
San Marino - March 2, 1992
Sao Tome and Principe - Sept 16, 1975
Saudi Arabia - Oct 24, 1945
Senegal - Sept 28, 1945
Serbia - Nov 1, 2000
Seychelles - Sept 21, 1976
Sierra Leone - Sept 27, 1961
Singapore - Sept 21, 1965
Slovakia - Jan 19, 1993
Slovenia - May 22, 1992
Solomon Islands - Sept 19, 1978
Somalia - Sept 20, 1960
South Africa - Nov 7, 1945 (original UN member)
South Sudan - July 14, 2011
Spain - Dec 14, 1955
Sri Lanka - Dec 14, 1955
Sudan - Nov 12, 1956
Suriname - Dec 4, 1975
Swaziland - Sept 24, 1968
Sweden - Nov 19, 1946
Switzerland - Sept 10, 2002
Syria - Oct 24, 1945 (original UN member)
Tajikistan - March 2, 1992
Tanzania - Dec 14, 1961
Thailand - Dec 16, 1946
Togo - Sept 20, 1960
Tonga - Sept 14, 1999
Trinidad and Tobago - Sept 18, 1962
Tunisia - Nov 12, 1956
Turkey - Oct 24, 1945 (original UN member)
Turkmenistan - March 2, 1992
Tuvalu - Sept 5, 2000
Uganda - Oct 25, 1962
Ukraine - Oct 24, 1945 (original UN member)
United Arab Emirates - Dec 9, 1971
United Kingdom - Oct 24, 1945 (original UN member)
United States of America - Oct 24, 1945 (original UN member)
Uruguay - Dec 18, 1945
Uzbekistan - March 2, 1992
Vanuatu - Sept 15, 1981
Venezuela - Nov 15, 1945 (original UN member)
Vietnam - Sept 20, 1977
Yemen - Sept 30, 1947
Zambia - Dec 1, 1964
Zimbabwe - Aug 25, 1980