Editing Organisation of African Unity (section)

==OAU members by date of admission (53 states)==
{| class="wikitable"
|-
! Date !! Countries !! Notes
|-
| rowspan=33| 25 May 1963 || {{flagcountry|Algeria}} ||
|-
| {{flagcountry|Burundi|1962}} ||
|-
| {{flagcountry|Cameroon|1961}} ||
|-
| {{flagcountry|Central African Republic}} ||
|-
| {{flagcountry|Chad}} ||
|-
| {{flagcountry|Congo (Brazzaville)}} ||
|-
| {{flagcountry|Democratic Republic of Congo|1960}} || 1971–97 [[Zaire]]
|-
| {{flagcountry|Dahomey}} || From 1975 [[Benin]]
|-
| {{flagcountry|Egypt|1958}} ||
|-
| {{flagcountry|Ethiopia|1897}} ||
|-
| {{flagcountry|Gabon}} ||
|-
| {{flagcountry|Ghana}} ||
|-
| {{flagcountry|Guinea}} ||
|-
| {{flagcountry|Ivory Coast}} || From 1985 Côte d'Ivoire
|-
| {{flagcountry|Liberia}} ||
|-
| {{flagcountry|Libya}} ||
|-
| {{flagcountry|Madagascar}} ||
|-
| {{flagcountry|Mali}} ||
|-
| {{flagcountry|Mauritania|1959}} || 
|- 
| {{flagcountry|Morocco}} || Withdrew 12 November 1984, protesting the membership of [[Western Sahara]]. However, Morocco joined the African Union in January 2017, 33 years after its withdrawal.<ref>{{Cite web |url=https://www.aljazeera.com/news/2017/01/morocco-rejoins-african-union-33-years-170131084926023.html |title=Morocco rejoins the African Union after 33 years |publisher=[[Al Jazeera Media Network|Al Jazeera]]|date=31 January 2017|access-date=18 June 2018 |archive-url=https://web.archive.org/web/20180618175432/https://www.aljazeera.com/news/2017/01/morocco-rejoins-african-union-33-years-170131084926023.html |archive-date=18 June 2018 |url-status=live}}</ref>
|-
| {{flagcountry|Niger}} ||
|-
| {{flagcountry|Nigeria}} ||
|-
| {{flagcountry|Rwanda|1962}} ||
|-
| {{flagcountry|Senegal}} ||
|-
| {{flagcountry|Sierra Leone}} ||
|-
| {{flagcountry|Somalia}} ||
|-
| {{flagcountry|Sudan|1956}} ||
|-
| {{flagcountry|Tanganyika (1961–1964)}} || Tanganyika and Zanzibar merged 26 April 1964 to form the United Republic of Tanganyika and Zanzibar, which was renamed [[Tanzania]] on 1 November 1964.
|-
| {{flagcountry|Togo}} ||
|-
| {{flagcountry|Tunisia}} ||
|-
| {{flagcountry|Uganda}} ||
|-
| {{flagcountry|Upper Volta}} || From 1984 Burkina Faso
|-
| {{flagcountry|Zanzibar}} || Tanganyika and Zanzibar merged 26 April 1964 to form the United Republic of Tanganyika and Zanzibar, which was renamed Tanzania 1 November 1964.
|-
| 13 December 1963 || {{flagcountry|Kenya}} || 
|-
| 13 July 1964 || {{flagcountry|Malawi}} || 
|-
| 16 December 1964 || {{flagcountry|Zambia}} || 
|-
| October 1965  || {{flagcountry|Gambia}} || 
|-
| rowspan=2| 31 October 1966 || {{flagcountry|Botswana}} || 
|-
| {{flagcountry|Lesotho|1966}} ||
|-
| August 1968 || {{flagcountry|Mauritius}} || 
|-
| 24 September 1968 || {{flagcountry|Swaziland}} (now [[Eswatini]]) || 
|-
| 12 October 1968 || {{flagcountry|Equatorial Guinea}} || 
|-
| 19 November 1973 || {{flagcountry|Guinea-Bissau}} || 
|-
| 11 February 1975 || {{flagcountry|Angola}} || 
|-
| rowspan=4 | 18 July 1975 || {{flagcountry|Cape Verde|1975}} || 
|-
| {{flagcountry|Comoros|1975}} ||
|-
| {{flagcountry|Mozambique|1975}} ||
|-
| {{flagcountry|Sao Tome and Principe}} ||
|-
| 29 June 1976 || {{flagcountry|Seychelles}} || 
|-
| 27 June 1977 || {{flagcountry|Djibouti}} || 
|-
| 1 June 1980 || {{flagcountry|Zimbabwe}} || 
|-
| 22 February 1982 || {{flagcountry|Western Sahara}} || 
|-
| 3 June 1990 || {{flagcountry|Namibia}} || 
|-
| 24 May 1993 || {{flagcountry|Eritrea}} || 
|-
| 6 June 1994 || {{flagcountry|South Africa}} || 
|}