|Member||Date of Admission|
|Sweden||19 November 1946|
|Syria||24 October 1945|
|Tajikistan||2 March 1992|
|Thailand||16 December 1946|
|The former Yugoslav Republic of Macedonia||8 April 1993|
|Timor Leste||27 September 2002|
|Togo||20 September 1960|
|Tonga||14 September 1999|
|Trinidad and Tobago||18 September 1962|
|Tunisia||12 November 1956|
|Turkey||24 October 1945|
|Turkmenistan||2 March 1992|
|Tuvalu||5 September 2000|
|Uganda||25 October 1962|
|Ukraine||24 October 1945|
|United Arab Emirates||9 December 1971|
|United Kingdom||24 October 1945|
|United of Republic of Tanzania||14 December 1961|
|United States||24 October 1945|
|Uruguay||18 December 1945|
|Uzbekistan||2 March 1992|
|Vanuatu||15 September 1981|
|Venezuela||15 November 1945|
|Viet Nam||20 September 1977|
|Yemen||30 September 1947|
|Zambia||1 December 1964|
|Zimbabwe||25 August 1980|
- Egypt and Syria were original Members of the United Nations from 24 October 1945. Following a plebiscite on 21 February 1958, the United Arab Republic was established by a union of Egypt and Syria and continued as a single Member. On 13 October 1961, Syria, having resumed its status as an independent State, resumed its separate membership in the United Nations.
- The Socialist Federal Republic of Yugoslavia was an original Member of the United Nations, the Charter having been signed on its behalf on 26 June 1945 and ratified 19 October 1945, until its dissolution following the establishment and subsequent admission as new Members of Bosnia and Herzegovina, the Republic of Croatia, the Republic of Slovenia, The former Yugoslav Republic of Macedonia, and the Federal Republic of Yugoslavia. By resolution A/RES/47/225 of 8 April 1993, the General Assembly decided to admit as a Member of the United Nations the State being provisionally referred to for all purposes within the United Nations as “The former Yugoslav Republic of Macedonia” pending settlement of the difference that had arisen over its name.
- Tanganyika was a Member of the United Nations from 14 December 1961 and Zanzibar was a Member from 16 December 1963. Following the ratification on 26 April 1964 of Articles of Union between Tanganyika and Zanzibar, the United Republic of Tanganyika and Zanzibar continued as a single Member, changing its name to the United Republic of Tanzania on 1 November 1964.
- Yemen was admitted to membership in the United Nations on 30 September 1947 and Democratic Yemen on 14 December 1967. On 22 May 1990, the two countries merged and have since been represented as one Member with the name “ Yemen”.