As of April 2015, there are 193 United Nations (UN) member states, each of which is a member of the United Nations General Assembly.
The following is a list of United Nations member states arranged in chronological order according to their dates of admission (with the United Nations Security Council resolutions that recommended their admission and the United Nations General Assembly resolutions that admitted them, signified with SCR and GAR, respectively), including former members. Members denoted with "→" changed their names, had their memberships in the UN continued by a successor state, merged with other members, or were dissolved.
The UN officially came into existence on 24 October 1945, after ratification of the United Nations Charter by the five permanent members of the United Nations Security Council (China, France, the Soviet Union, the United Kingdom, and the United States) and a majority of the other signatories. A total of 51 original members (or founding members) joined that year; 50 of them signed the Charter at the United Nations Conference on International Organization in San Francisco on 26 June 1945, while Poland, which was not represented at the conference, signed it on 15 October 1945.
24 October 1945 ArgentinaBelarus (seat held by the Byelorussian Soviet Socialist Republic → renamed to Belarus in 1991) Brazil ChileChina (seat held by the Republic of China) (until 1949, Republic of China on Taiwan) → China (seat transferred to the People's Republic of China) (Resolution 2758) Cuba → Communist Cuba Czechoslovakia (seat held by Third Czechoslovak Republic → Czechoslovak Socialist Republic → Czech and Slovak Federative Republic) → dissolved (current UN members that formerly comprised Czechoslovakia: Czech Republic and Slovakia) Denmark Dominican Republic Egypt → United Arab Republic (period when merged with Syria) → Arab Republic of Egypt El SalvadorFrance (seat held by the Provisional Government of the French Republic → became the French Fourth Republic → reconstituted as the French Fifth Republic in 1958) Haiti Iran → Islamic Republic of Iran Lebanon Luxembourg New Zealand Nicaragua Paraguay Commonwealth of the Philippines → Philippine Republic → Republic of the Philippines Poland → Polish People's Republic → Third Polish Republic Saudi Arabia// Soviet Union (Union of Soviet Socialist Republics} → Russian Federation (successor state) Syria → United Arab Republic (period when merged with Egypt) → Syrian Arab Republic TurkeyUkraine (seat held by the Ukrainian Soviet Socialist Republic → renamed to Ukraine in 1991) United Kingdom of Great Britain and Northern Ireland United States of America Democratic Federal Yugoslavia → Federal People's Republic of Yugoslavia → Socialist Federal Republic of Yugoslavia → dissolved (would-be successor state Federal Republic of Yugoslavia was de facto suspended from the United Nations by SCR 777 and GAR 47/1; current UN members that formerly comprised Yugoslavia: Bosnia and Herzegovina, Croatia, Republic of Macedonia, Montenegro, Serbia, and Slovenia)25 October 1945 Kingdom of Greece → Hellenic Republic30 October 1945 India → Dominion of India → Republic of India31 October 1945 Peru1 November 1945 Australia2 November 1945 Costa Rica Liberia5 November 1945 Colombia7 November 1945 Mexico Union of South Africa → South Africa9 November 1945 Canada, Dominion of → Canada13 November 1945 Ethiopia (Ethiopian Empire) → Derg → People's Democratic Republic of Ethiopia → Transitional Government of Ethiopia → Federal Democratic Republic of Ethiopia Panama14 November 1945 Bolivia → Bolivia (Plurinational Republic of)15 November 1945 Venezuela → Venezuela (Bolivarian Republic of)21 November 1945 Guatemala27 November 1945 Norway10 December 1945 Netherlands17 December 1945 Honduras18 December 1945 Uruguay21 December 1945 Ecuador Kingdom of Iraq → Iraqi Republic → Ba'athist Iraq → Iraq27 December 1945 Belgium19 November 1946 Afghanistan (SCR 8, GAR 34) Iceland (SCR 8, GAR 34) Sweden (SCR 8, GAR 34)16 December 1946 Siam (SCR 13, GAR 101) → Thailand30 September 1947 Pakistan (SCR 29, GAR 108) North Yemen (SCR 29, GAR 108) → Yemen (unified state after merging with South Yemen)19 April 1948 Union of Burma (SCR 45, GAR 188) → Socialist Republic of the Union of Burma → Union of Myanmar → Myanmar11 May 1949 Israel (SCR 69, GAR 273)28 September 1950 Indonesia (SCR 86, GAR 491)14 December 1955(all by SCR 109 and GAR 995)
Albania → Republic of Albania Austria Bulgaria → Republic of Bulgaria Cambodia → Khmer Republic → Cambodia → Democratic Kampuchea → Cambodia Ceylon → Sri Lanka Finland Hungary (application addressed in 1947 by SCR 24) → Hungary Ireland Italy (application addressed in 1947 by SCR 25) Jordan Laos → Lao People's Democratic Republic Libya → Libyan Arab Republic → Libyan Arab Jamahiriya → Libya Nepal → Federal Democratic Republic of Nepal Portugal Romania (Romanian People's Republic) → Socialist Republic of Romania → Romania Spain → Kingdom of Spain12 November 1956 Sudan (SCR 112, GAR 1110) → Republic of the Sudan Morocco (SCR 115, GAR 1111) Tunisia (SCR 116, GAR 1112)18 December 1956 Japan (SCR 121, GAR 1113)8 March 1957 Ghana (SCR 124, GAR 1118)17 September 1957 Federation of Malaya (SCR 125, GAR 1134) → Malaysia22 February 1958 Egypt and Syria merge to become the United Arab Republic12 December 1958 Guinea (SCR 131, GAR 1325)20 September 1960 Cameroun (SCR 133, GAR 1476) → Cameroon → United Republic of Cameroon → Cameroon Togo (SCR 136, GAR 1477) Madagascar (SCR 140, GAR 1478) Somalia (SCR 141, GAR 1479)Congo (Léopoldville) (SCR 142, GAR 1480) → Zaire → Democratic Republic of the Congo Dahomey (SCR 147, GAR 1481) → Benin Niger (SCR 148, GAR 1482) Upper Volta (SCR 149, GAR 1483) → Burkina Faso Ivory Coast (SCR 150, GAR 1484) → Côte d'Ivoire Chad (SCR 151, GAR 1485) Congo (Brazzaville) (SCR 152, GAR 1486) → People's Republic of the Congo → Republic of the Congo Gabon (SCR 153, GAR 1487) Central African Republic (SCR 154, GAR 1488) → Central African Empire → Central African Republic Cyprus (SCR 155, GAR 1489)28 September 1960 Senegal (SCR 139 and SCR 158, GAR 1490) Mali (SCR 139 and SCR 159, GAR 1491)7 October 1960 Nigeria (SCR 160, GAR 1492)27 September 1961 Sierra Leone (SCR 165, GAR 1623)27 October 1961 Mongolian People's Republic (SCR 166, GAR 1630) → Mongolia Mauritania (SCR 167, GAR 1631)14 December 1961 Tanganyika (SCR 170, GAR 1667) → United Republic of Tanzania (after merging with Zanzibar)18 September 1962 Rwanda (SCR 172, GAR 1748) Burundi (SCR 173, GAR 1749) Jamaica (SCR 174, GAR 1750) Trinidad and Tobago (SCR 175, GAR 1751)8 October 1962 Algeria (SCR 176, GAR 1754)25 October 1962 Uganda (SCR 177, GAR 1758)14 May 1963 Kuwait (GAR 1872)16 December 1963 Zanzibar (SCR 184, GAR 1975) → merged with Tanganyika (now United Republic of Tanzania) Kenya (SCR 185, GAR 1976)1 December 1964 Malawi (SCR 195, General Assembly decision) Malta (SCR 196, General Assembly decision) Zambia (SCR 197, General Assembly decision)20 January 1965 Indonesia withdraws from the United Nations21 September 1965 The Gambia (SCR 200, GAR 2008) Maldives (SCR 212, GAR 2009) Singapore (SCR 213, GAR 2010)20 September 1966 Guyana (SCR 223, GAR 2133)28 September 1966 Indonesia rejoins the United Nations17 October 1966 Botswana (SCR 224, GAR 2136) Lesotho (SCR 225, GAR 2137)9 December 1966 Barbados (SCR 230, GAR 2175)14 December 1967 South Yemen (SCR 243, GAR 2310) → merged with North Yemen (now unified state of Yemen)24 April 1968 Mauritius (SCR 249, GAR 2371)24 September 1968 Swaziland (SCR 257, GAR 2376)12 November 1968 Equatorial Guinea (SCR 260, GAR 2384)13 October 1970 Fiji (SCR 287, GAR 2622)21 September 1971 Bhutan (SCR 292, GAR 2751) Bahrain (SCR 296, GAR 2752) Qatar (SCR 297, GAR 2753)7 October 1971 Oman (SCR 299, GAR 2754)9 December 1971 United Arab Emirates (SCR 304, GAR 2794)18 September 1973 Federal Republic of Germany (SCR 335, GAR 3050) → Germany (unified state after accession of German Democratic Republic) German Democratic Republic (SCR 335, GAR 3050) → acceded to Federal Republic of Germany (now unified state of Germany) The Bahamas (SCR 336, GAR 3051)17 September 1974 Bangladesh (SCR 351, GAR 3203) Grenada (SCR 352, GAR 3204) Guinea-Bissau (SCR 356, GAR 3205)16 September 1975 Cape Verde (SCR 372, GAR 3363) São Tomé and Príncipe (SCR 373, GAR 3364) People's Republic of Mozambique (SCR 374, GAR 3365) → Mozambique10 October 1975 Papua New Guinea (SCR 375, GAR 3368)12 November 1975 Comoros, State of (SCR 376, GAR 3385) → Federal and Islamic Republic of Comoros → Union of the Comoros4 December 1975 Suriname (SCR 382, GAR 3413)21 September 1976 Seychelles (SCR 394, GAR 31/1)1 December 1976 People's Republic of Angola (SCR 397, GAR 31/44) → Republic of Angola15 December 1976 Western Samoa (SCR 399, GAR 31/104) → Samoa20 September 1977 Djibouti (SCR 412, GAR 32/1) Vietnam (SCR 413, GAR 32/2)19 September 1978 Solomon Islands (SCR 433, GAR 33/1)18 December 1978 Dominica (SCR 442, GAR 33/107)18 September 1979 Saint Lucia (SCR 453, GAR 34/1)25 August 1980 Zimbabwe (SCR 477, GAR S-11/1)16 September 1980 Saint Vincent and the Grenadines (SCR 464, GAR 35/1)15 September 1981 Vanuatu (SCR 489, GAR 36/1)25 September 1981 Belize (SCR 491, GAR 36/3)11 November 1981 Antigua and Barbuda (SCR 492, GAR 36/26)23 September 1983 Saint Kitts and Nevis (SCR 537, GAR 38/1)21 September 1984 Brunei Darussalam (SCR 548, GAR 39/1)23 April 1990 Namibia (SCR 652, GAR S-18/1)18 September 1990 Liechtenstein (SCR 663, GAR 45/1)24 August 1991 Ukraine Ukraine independence from the Soviet Union17 September 1991 Democratic People's Republic of Korea (SCR 702, GAR 46/1) Republic of Korea (SCR 702, GAR 46/1) Federated States of Micronesia (SCR 703, GAR 46/2) Marshall Islands (SCR 704, GAR 46/3) Estonia (SCR 709, GAR 46/4) Latvia (SCR 710, GAR 46/5) Lithuania (SCR 711, GAR 46/6)17 September 1991 Belarus Belarus independence from the Soviet Union2 March 1992 Kazakhstan (SCR 732, GAR 46/224) Armenia (SCR 735, GAR 46/227) Kyrgyzstan (SCR 736, GAR 46/225) Uzbekistan (SCR 737, GAR 46/226) Tajikistan (SCR 738, GAR 46/228) Moldova (SCR 739, GAR 46/223) Turkmenistan (SCR 741, GAR 46/229) Azerbaijan (SCR 742, GAR 46/230) San Marino (SCR 744, GAR 46/231)22 May 1992 Croatia (SCR 753, GAR 46/238) Slovenia (SCR 754, GAR 46/236) Republic of Bosnia and Herzegovina (SCR 755, GAR 46/237) → Bosnia and Herzegovina31 July 1992 Georgia (SCR 763, GAR 46/241)19 January 1993 Slovakia (SCR 800, GAR 47/222) Czech Republic (SCR 801, GAR 47/221)8 April 1993 Former Yugoslav Republic of Macedonia (provisional reference) (SCR 817, GAR 47/225)28 May 1993 Eritrea (SCR 828, GAR 47/230) Monaco (SCR 829, GAR 47/231)28 July 1993 Andorra (SCR 848, GAR 47/232)15 December 1994 Palau (SCR 963, GAR 49/63)14 September 1999 Kiribati (SCR 1248, GAR 54/1) Nauru (SCR 1249, GAR 54/2) Tonga (SCR 1253, GAR 54/3)5 September 2000 Tuvalu (SCR 1290, GAR 55/1)1 November 2000 Federal Republic of Yugoslavia (SCR 1326, GAR 55/12) → Serbia and Montenegro → Serbia (successor state)10 September 2002 Switzerland (SCR 1426, GAR 57/1)27 September 2002 East Timor (SCR 1414, GAR 57/3)28 June 2006 Montenegro (SCR 1691, GAR 60/264)14 July 2011 South Sudan (SCR 1999, GAR 65/308)Below is a summary of the growth in UN membership.
