| Country | Became a parliamentary republic | Status changed | Changed to | Reason for change | Notes |
|---|
| Full parliamentary republics |
|---|
SSR Abkhazia | 1921 | 1931 | One-party parliamentary republic | Creation of theAbkhaz Autonomous Soviet Socialist Republic | Had a collective head of state with a distinct chairman One-party system under theCommunist Party of Abkhazia |
Abkhaz ASSR | 1931 | 1991 | Full parliamentary republic | Constitutional amendment | Had a collective head of state with a distinct chairman One-party system under theCommunist Party of Abkhazia |
Abkhazia | 1991 | 1994 | Semi-presidential republic | New constitution adopted | |
First Republic of Armenia | 1918 | 1920 | One-partyparliamentary republic | Creation of theArmenian Soviet Socialist Republic | |
Armenian SSR | 1920 | 1991 | Multi-partysemi-presidential republic | Constitutional amendment | Had a collective head of state with a distinct chairman until 1990 One-party system under theCommunist Party of Armenia |
First Austrian Republic | 1920 | 1929 | Semi-presidential system | Constitutional amendment | |
Azerbaijan Democratic Republic | 1918 | 1920 | One-party parliamentary republic | Creation of theAzerbaijan Soviet Socialist Republic | |
Azerbaijan SSR | 1920 | 1990 | Presidential republic | Constitutional amendment | Had a collective head of state with a distinct chairman One-party system under theCommunist Party of Azerbaijan |
Belarusian Democratic Republic | 1918 | 1920 | One-party parliamentary republic | Creation of theByelorussian Soviet Socialist Republic | |
Byelorussian SSR | 1920 | 1991 | Full parliamentary republic | Constitutional amendment | Had a collective head of state with a distinct chairman until 1990 One-party system under theCommunist Party of Byelorussia |
Belarus | 1991 | 1994 | Presidential republic | New constitution adopted | |
Brazil | 1961 | 1963 | Presidential system | Referendum | |
Burma(present-dayMyanmar) | 1948 | 1962 | Military dictatorship | 1962 Burmese coup d'état | |
Chile | 1891 | 1924 | Military junta | 1924 Chilean coup d'état | |
| 1925 | 1925 | Presidential system | New constitution | |
Republic of China | 1947 | 1949 | One-party parliamentary republic. | Chinese Civil War | One-party system under theChinese Communist Party (Mainland China). Provisions for parliamentary system "temporarily"suspended duringmartial law period on Taiwan. 1947 Constitution remains active only on the ROC-controlled territories butamendments in 1991 use thesemi-presidential system. |
First Czechoslovak Republic | 1920 | 1939 | One-party state | Munich agreement | |
Third Czechoslovak Republic | 1945 | 1948 | One-party parliamentary republic | Coup d'état | |
Fourth Czechoslovak Republic | 1948 | 1989 | Multi-partyparliamentary republic | Velvet Revolution | One-party system under theCommunist Party of Czechoslovakia |
Fifth Czechoslovak Republic | 1989 | 1992 | State dissolved | Velvet Divorce | |
State of East Indonesia | 1946 | 1950 | State dissolved | Merged to theRepublic of Indonesia | |
First Republic of Estonia | 1920 | 1934 | One-partyparliamentary republic | 1934 Estonian coup d'état | In June 1940, Estonia was occupied and annexed by theSoviet Union. |
| 1934 | 1938 | One-partypresidential republic | New constitution adopted |
French Third Republic | 1870 | 1940 | Puppet state | World War II German occupation | |
French Fourth Republic | 1946 | 1958 | Semi-presidential system | New constitution adopted | |
Democratic Republic of Georgia | 1918 | 1921 | One-party parliamentary republic | Creation of theGeorgian Soviet Socialist Republic and theSocialist Soviet Republic of Abkhazia | |
Georgian SSR | 1921 | 1991 | Multi-party semi-presidential republic | Constitutional amendment | Had a collective head of state with a distinct chairman until 1990 One-party system under theCommunist Party of Georgia |
Guyana | 1970 | 1980 | Assembly-independent republic | New constitution adopted | |
Hungary | 1946 | 1949 | One-party state | Creation of thePeople's Republic of Hungary | |
Indonesia | 1945 | 1959 | Presidential parliamentary system | Presidential constitution reinstated | |
Israel | 1948 | 1996 | Semi-parliamentary system | Constitutional amendment | |
Democratic Kampuchea | 1976 | 1979 | One party parliamentary republic | Capture of Phnom Penh | One-party system under theCommunist Party of Kampuchea |
People's Republic of Kampuchea | 1979 | 1992 | Transitional government, then constitutional monarchy | United Nations Security Council Resolution 745 | One-party system under theKampuchean People's Revolutionary Party |
Kenya | 2008 | 2013 | Presidential system | New constitution andelections | A separate Prime Minister existed between 2008 and 2013 The switch to a fully presidential system was legislated in 2010, but only took effect in 2013. |
Second Republic of Korea | 1960 | 1961 | Military junta | 16 May coup | |
Kazakh SSR | 1936 | 1990 | Presidential republic | Constitutional amendment | Had a collective head of state with a distinct chairman One-party system under theCommunist Party of Kazakhstan |
Kirghiz SSR | 1936 | 1990 | Presidential republic | Constitutional amendment | Had a collective head of state with a distinct chairman One-party system under theCommunist Party of Kirghizia |
Kyrgyzstan | 2010 | 2021 | Presidential republic | Referendum | The2010 Constitution of Kyrgyzstan introduced a parliamentary system to the country while remaining ade factosemi-presidential republic, with thePresident retaining many forms of executive powers such as appointing aPrime Minister as the head of government. The decision was subjected to a parliamentary vote of confidence.[21] |
First Republic of Latvia | 1922 | 1934 | One-partyparliamentary republic | 1934 Latvian coup d'état | In June 1940, Latvia was occupied and annexed by theSoviet Union. |
| 1934 | 1940 | State dissolved | World War II Soviet occupation |
First Republic of Lithuania | 1920 | 1926 | One-party state | 1926 Lithuanian coup d'état | In June 1940, Lithuania was occupied and annexed by theSoviet Union. |
Lithuania | 1990 | 1992 | Multi-partysemi-presidential republic | New constitution adopted | In February 1993, Lithuania holds itsfirst presidential election since the state re-established. |
Moldavian SSR(present-dayMoldova) | 1940 | 1990 | Multi-party semi-presidential republic | Constitutional amendment | Had a collective head of state with a distinct chairman One-party system under theCommunist Party of Moldavia |
Nigeria | 1963 | 1966 | Military dictatorship (which led in 1979 to the democratic,presidentialSecond Nigerian Republic) | Coup d'état | |
Myanmar | 2016 | 2021 | Military dictatorship | 2021 Myanmar coup d'état | De jureAssembly-independent republic, de factoParliamentary republic |
Pakistan | 1956 | 1958 | Military dictatorship | 1958 Pakistani coup d'état | |
| 1973 | 1978 | 1977 Pakistani coup d'état | |
| 1997 | 1999 | 1999 Pakistani coup d'état | |
| 2002 | 2003 | Assembly-independent republic | Constitutional amendment | |
Second Polish Republic | 1919 | 1935 | Presidential system | New constitution adopted | |
First Portuguese Republic | 1911 | 1926 | Military dictatorship (which led in 1933 to theEstado Novoone-partypresidential republic) | 28 May coup | |
First Philippine Republic (Malolos Republic) | 1899 | 1901 | Military dictatorship (De facto United StatesColony) | Capture ofEmilio Aguinaldo to the American forces | |
Fourth Philippine Republic | 1973 | 1981 | Semi-presidential system (de factoMilitary dictatorship underMartial Law between 1972 and 1986.) | Constitutional amendment | |
Republic of the Congo | 1960 | 1965 | Military dictatorship (De factoone-party state) | 1965 Congolese coup d'état | |
Rhodesia | 1970 | 1979 | Parliamentary system | Creation ofZimbabwe-Rhodesia | Political rights were restricted to the white minority |
Russian SFSR | 1917 | 1991 | Multi-party semi-presidential republic | Referendum | |
Soviet Union | 1922 | 1990 | Multi-party semi-presidential republic | Constitutional amendment | Had a collective head of state with a distinct chairman until 1989 One-party system under theCommunist Party of the Soviet Union |
First Spanish Republic | 1873 | 1874 | Constitutional monarchy | Restoration of the monarchy | |
Second Spanish Republic | 1931 | 1939 | One-party state (which declared itself aconstitutional monarchy in 1947) | Coup d'état | |
Suriname | 1975 | 1987 | Assembly-independent republic | New constitution adopted | |
Sri Lanka | 1972 | 1978 | Semi-presidential system | New constitution adopted | |
Syrian Republic | 1930 | 1958 | State dissolved | Creation of theUnited Arab Republic | Merged into theUnited Arab Republic, which operated as aOne-partypresidential system |
Syrian Arab Republic | 1961 | 1963 | One-partypresidential system | 1963 Syrian coup d'état | |
| 1991 | Semi-presidential system | Constitutional amendment |
Transvaal Republic | 1852 | 1902 | Colony of the British Empire | Second Boer War | |
Tajik SSR | 1929 | 1990 | Presidential republic | Constitutional amendment | Had a collective head of state with a distinct chairman One-party system under theCommunist Party of Tajikistan |
Turkey | 1923 | 2018 | Presidential system | Referendum | |
Turkmen SSR | 1925 | 1990 | Presidential republic | Constitutional amendment | Had a collective head of state with a distinct chairman One-party system under theCommunist Party of Turkmenistan |
Uganda | 1963 | 1966 | One-party state | Suspension of the constitution | |
Ukrainian People's Republic | 1917 | 1918 | Client state | 1918 Ukrainian coup d'état | |
| 1918 | 1919 | One-party parliamentary republic | Creation of theUkrainian Soviet Socialist Republic | |
| 1921 | State dissolved | Treaty of Riga | |
Ukrainian SSR | 1919 | 1991 | Multi-party semi-presidential republic | Constitutional amendment | Had a collective head of state with a distinct chairman until 1990 One-party system under theCommunist Party of Ukraine |
Uzbek SSR | 1924 | 1990 | Presidential republic | Constitutional amendment | Had a collective head of state with a distinct chairman One-party system under theCommunist Party of Uzbekistan |
Yugoslavia | 1945 | 1953 | Parliamentary republic with an executive presidency | Constitutional amendment | Had a collective head of state with a distinct chairman One-party system under theCommunist Party of Yugoslavia |
Zimbabwe Rhodesia | 1979 | 1979 | Dependent territory | Reversion toSouthern Rhodesia | |
Zimbabwe | 1980 | 1987 | Presidential system | Constitutional amendment | |
| Parliamentary republics with an executive presidency |
|---|
| Country | Became a parliamentary republic with an executive presidency | Status changed | Changed to | Reason for change | Notes |
|---|
Gambia | 1970 | 1982 | Presidential system | Constitutional amendment | The president was elected semi-directly by a constituency-baseddouble simultaneous vote, with vacancies filled by Parliament; a motion of no confidence automatically entailedsnap parliamentary elections. Presidential elections were made fully direct and separate from parliamentary elections in 1982. |
Indonesia | 1959 | 2001 | Presidential system | Constitutional amendment | As defined by the original Constitution of 1945 (reinstated under the Presidential Decree of 5 July 1959), this was finally changed during the amendments of 2001, occurring just months after the ousting ofAbdurrahman Wahid. The first direct presidential election was held in2004. |
Iran | 1979 | 1989 | Presidential system under anIslamictheocracy | Constitutional amendment | TheSupreme Leader of Iran was established on 3 December 1979 following theIranian Revolution to function as the country's head of state. Both the president and prime minister, which was retained under the former monarchy, were simultaneously the co-heads of government, but they answer to the Supreme Leader. The post of the prime minister was dropped in 1989 leaving the president as the sole head of government. |
Kenya | 1964 | 2008 | Full parliamentary system | Coalition and power-sharing | Originally, the president was elected semi-directly by a constituency-baseddouble simultaneous vote, with vacancies filled by Parliament; a motion of no confidence automatically entailed either the resignation of the president orsnap parliamentary elections. Presidential elections were made fully direct in 1969, including after a vacancy, but their schedule remained linked to the parliamentary elections. A separate Prime Minister existed between 2008 and 2013. |
Yugoslavia | 1953 | 1963 | Assembly-independent republic | New constitution | One-party system under theLeague of Communists of Yugoslavia |
| Assembly-independent systems |
|---|
| Country | Became an assembly- independent republic | Status changed | Changed to | Reason for change | Notes |
|---|
First Republic of Ghana | 1960 | 1966 | Military dictatorship (Which led to the fully parliamentarySecond Republic of Ghana) | Coup d'état | |
Pakistan | 1985 | 1997 | Full parliamentary republic | Constitutional amendment | |
| 2003 | 2010 | Constitutional amendment |
Serbia and Montenegro | 1992 | 2000 | Semi-presidential republic | Constitutional amendment | |
Tanganyika | 1962 | 1964 | State dissolved | Creation of theUnited Republic of Tanzania | Merged into theUnited Republic of Tanzania, which operated as aOne-partypresidential system |
Yugoslavia | 1963 | 1980 | Directorial republic | New constitution and thedeath of Josip Broz Tito | One-party system under theLeague of Communists of Yugoslavia The change to a directorial system was legislated in 1973, but only took effect in 1980. |
| Directorial systems |
|---|
Yugoslavia | 1980 | 1992 | — | Breakup of Yugoslavia | One-party system under theLeague of Communists of Yugoslavia |