# List of legislatures by country

This is a list of legislatures by country. A "legislature" is the generic name for the national parliaments and congresses that act as a plenary general assembly of representatives and that have the power to legislate. All entities included in the list of sovereign states are included in this list.

## Names of legislatures

The legislatures are listed with their names in English and the name in the (most-used) native language of the country (or the official name in the second-most used native language in cases where English is the majority "native" language).

## List of legislatures
### Supranational legislatures

| Organisation | Name of house(s) | House level | Term (years) | Voting system | Seats | Population per seat | GDP per seat (USD millions) |
| Andean Community | Andean Parliament | Unicameral | | Direct, indirect (varies by country) proportional | 25 | ~ | ~ |
| African Union | Pan-African Parliament | Unicameral | 5 | Indirect (appointed by 47 of 53 national legislatures) | 265 | 3,974,098 | 14,180 |
| Arab League | Arab Parliament | Unicameral | | | 80 | ~ | ~ |
| Benelux | Benelux Parliament | Unicameral | | Indirect | 49 | ~ | ~ |
| Central American Integration System | Central American Parliament | Unicameral | Varies by country | Direct, proportional | 126 | 426,274 | 2,651 |
| Community of Latin American and Caribbean States | Latin American Parliament | Unicameral | 5 | Direct | 276 | ~ | ~ |
| European Union | European Parliament | Lower | 5 | Open and closed list proportional representation Single transferable vote (in the Republic of Ireland and Malta) | 705 | 667,761 | 20,983 |
| European Union | Council of the European Union (informally known as the Council of Ministers) | Upper | N/A | Indirect (members of national governments) | 27 | ~ | ~ |
| Federation of Earth | Provisional World Parliament | Unicameral | | Direct | 500+ | ~ | ~ |
| Mercosur | Mercosur Parliament | Unicameral | 5 | Direct, indirect (varies by country) proportional | 108 | 1,588,889 | 16,228 |

### Legislatures of sovereign states (Member and observer states of the United Nations)

| UN member or observer state | Overall name of legislature | Name of house(s) | House level | Term (years) | Electoral system | Seats | Population per seat |
| Islamic Emirate of Afghanistan | Leadership Council of Afghanistan (رهبری شُورَىٰ, Rahbarī Shūrā) | Leadership Council of Afghanistan (رهبری شُورَىٰ, Rahbarī Shūrā) | Unicameral | No fixed term | Appointment by the supreme leader | Aprx. 30 | 1,340,608 |
| Albania | Parliament of Albania (Kuvendi i Shqipërisë) | Parliament of Albania (Kuvendi i Shqipërisë) | Unicameral | 4 | Closed list proportional representation with the D'Hondt method by county with a 3% threshold | 140 | 20,226 |
| Algeria | Parliament of Algeria (البرلمان الجزائري, Barlaman al-Jazā'ir / Agraw Azzayri / Parlement algérien) | People's National Assembly (المجلس الشعبي الوطني, al-Majlis al-Sha'abi al-Watani / Asqamu Aɣerfan Aɣelnaw / Assemblée populaire nationale, APN) | Lower | 5 | Open list proportional representation with the largest remainder method by province | 407 | 80,303 |
| Algeria | Parliament of Algeria (البرلمان الجزائري, Barlaman al-Jazā'ir / Agraw Azzayri / Parlement algérien) | Council of the Nation (مجلس الأمة, Majlis al-Ummah / Conseil de la nation) | Upper | 6 | Elected by popular wilaya assemblies and communal people's assemblies, and appointed by the President | 174 | 257,638 |
| Andorra | General Council of Andorra (Consell General d'Andorra) | General Council of Andorra (Consell General d'Andorra) | Unicameral | 4 | Parallel voting: Closed list proportional representation with the largest remainder method nationwide and block vote by parish | 28 | 2,789 |
| Angola | National Assembly (Assembleia Nacional) | National Assembly (Assembleia Nacional) | Unicameral | 4 | Closed list proportional representation with the D'Hondt method nationwide and by province | 220 | 84,081 |
| Antigua and Barbuda | Parliament of Antigua and Barbuda | House of Representatives | Lower | 5 | First-past-the-post | 17 | 4,305 |
| Antigua and Barbuda | Parliament of Antigua and Barbuda | Senate | Upper | 5 | Appointed by the governor-general, representing the monarch, on the advice of the prime minister and leader of the Opposition | 17 | 4,811 |
| Argentina | National Congress of Argentina (Congreso de la Nación Argentina) | Chamber of Deputies of the Nation (Cámara de Diputados de la Nación) | Lower | 4 | Closed list proportional representation with the D'Hondt method by province with a 3% threshold | 257 | 156,097 |
| Argentina | National Congress of Argentina (Congreso de la Nación Argentina) | Honorable Senate of the Nation (Honorable Senado de la Nación Argentina) | Upper | 6 | Partial block voting by province | 72 | 557,181 |
| Armenia | National Assembly of Armenia (Հայաստանի Հանրապետության Ազգային ժողով, Hayastani Hanrapetyut'yan Azgayin zhoghov / Abbreviated: Ազգային ժողով, ԱԺ, Azgayin Zhoghov, AZh) Informal: Parliament of Armenia (խորհրդարան, Khorhrdaran) | National Assembly of Armenia (Հայաստանի Հանրապետության Ազգային ժողով, Hayastani Hanrapetyut'yan Azgayin zhoghov / Abbreviated: Ազգային ժողով, ԱԺ, Azgayin Zhoghov, AZh) Informal: Parliament of Armenia (խորհրդարան, Khorhrdaran) | Unicameral | 5 | Closed-list proportional representation in a nationwide constituency and open-list proportional in district constituencies, with a 5% or top-3 national threshold (or 7% for alliances) | 105 | 24,902 |
| Australia | Parliament of Australia | House of Representatives | Lower | 3 | Instant-runoff voting | 151 | 162,914 |
| Australia | Parliament of Australia | Senate | Upper | 6 | Single transferable vote by state/territory | 76 | 323,684 |
| Austria | Austrian Parliament (Österreichisches Parlament) | National Council (Nationalrat) | Lower | 5 | Open list proportional representation with the D'Hondt method in constituencies with a 4% threshold | 183 | 43,895 |
| Austria | Austrian Parliament (Österreichisches Parlament) | Federal Council (Bundesrat) | Upper | 5 and 6 | Elected by state legislatures | 60 | 129,563 |
| Azerbaijan | National Assembly (Milli Məclis) | National Assembly (Milli Məclis) | Unicameral | 5 | First-past-the-post | 125 | 73,320 |
| Bahamas, The | Parliament of the Bahamas | House of Assembly | Lower | 5 | First-past-the-post | 39 | 9,326 |
| Bahamas, The | Parliament of the Bahamas | Senate | Upper | 5 | Appointed by the governor-general, representing the monarch, on the advice of the prime minister and leader of the Opposition | 16 | 22,103 |
| Bahrain | National Assembly (المجلس الوطني البحريني, Al-majlis al-wataniu al-bahrayniu) | Council of Representatives (مجلس النواب, Majlis an-nuwab) | Lower | 4 | Two-round system | 40 | 30,864 |
| Bahrain | National Assembly (المجلس الوطني البحريني, Al-majlis al-wataniu al-bahrayniu) | Consultative Council (مجلس الشورى, Majlis al-shura) | Upper | 4 | Appointed by the king | 40 | 30,864 |
| Bangladesh | National Parliament (জাতীয় সংসদ, Jatiya Sangsad) | National Parliament (জাতীয় সংসদ, Jatiya Sangsad) | Unicameral | 5 | First-past-the-post | 350 | 466,909 |
| Barbados | Parliament of Barbados | House of Assembly | Lower | 5 | First-past-the-post | 30 | 9,486 |
| Barbados | Parliament of Barbados | Senate | Upper | 5 | Appointed by the President on the advice of the prime minister and leader of the Opposition | 21 | 13,551 |
| Belarus | National Assembly of the Republic of Belarus (Нацыянальны сход Рэспублікі Беларусь, Nacyjanalny schod Respubliki Bielaruś / Национальное собрание Республики Беларусь, Natsionalnoye sobran'ye Respubliki Belarus) | House of Representatives (Палата прадстаўнікоў, Palata pradstaŭnikoŭ / Палата представителей, Palata predstavitelej) | Lower | 4 | Two-round system | 110 | 85,997 |
| Belarus | National Assembly of the Republic of Belarus (Нацыянальны сход Рэспублікі Беларусь, Nacyjanalny schod Respubliki Bielaruś / Национальное собрание Республики Беларусь, Natsionalnoye sobran'ye Respubliki Belarus) | Council of the Republic (Савет Рэспублікі, Saviet Respubliki / Совет Республики) | Upper | 4 | Elected by regional councils, and appointed by the President | 64 | 147,773 |
| Belgium | Federal Parliament (Federaal Parlement / Parlement fédéral / Föderales Parlament) | Chamber of Representatives (Kamer van Volksvertegenwoordigers / Chambre des Représentants / Abgeordnetenkammer) | Lower | 5 | Open list proportional representation with the D'Hondt method by province with a 5% threshold | 150 | 74,000 |
| Belgium | Federal Parliament (Federaal Parlement / Parlement fédéral / Föderales Parlament) | Senate (Senaat / Sénat / Senat) | Upper | 5 | Elected by community and regional parliaments | 60 | 185,000 |
| Belize | National Assembly | House of Representatives | Lower | 5 | First-past-the-post | 31 | 10,748 |
| Belize | National Assembly | Senate | Upper | 5 | Appointed by the governor-general representing the monarch, on the advice of the prime minister and leader of the Opposition | 12 | 27,766 |
| Benin | National Assembly (Assemblée nationale) | National Assembly (Assemblée nationale) | Unicameral | 4 | Proportional representation with the largest remainder method in constituencies | 83 | 115,648 |
| Bhutan | Parliament of Bhutan (རྒྱལ་ཡོངས་ཚོགས་ཁང་, Gyelyong Tshokhang | National Assembly (རྒྱལ་ཡོངས་ཚོགས་འདུ།, Gyelyong Tshogdu) | Lower | 5 | First-past-the-post | 47 | 15,072 |
| Bhutan | Parliament of Bhutan (རྒྱལ་ཡོངས་ཚོགས་ཁང་, Gyelyong Tshokhang | National Council (རྒྱལ་ཡོངས་ཚོགས་སྡེ།, Gyelyong Tshogde) | Upper | 4 | First-past-the-post, and appointed by the king | 25 | 28,337 |
| Bolivia | Plurinational Legislative Assembly (Asamblea Legislativa Plurinacional) | Chamber of Deputies (Cámara de Diputados) | Lower | 5 | Closed list mixed-member proportional representation: Proportional representation with the D'Hondt method by department and first-past-the-post | 130 | 83,905 |
| Bolivia | Plurinational Legislative Assembly (Asamblea Legislativa Plurinacional) | Chamber of Senators (Cámara de Senadores) | Upper | 5 | Closed list proportional representation with the D'Hondt method by department | 36 | 302,993 |
| Bosnia and Herzegovina | Parliamentary Assembly (Parlamentarna skupština / Парламентарна скупштина) | House of Representatives (Predstavnički dom/ Zastupnički dom / Представнички дом) | Lower | 4 | Open list proportional representation with the largest remainder method in constituencies | 42 | 91,422 |
| Bosnia and Herzegovina | Parliamentary Assembly (Parlamentarna skupština / Парламентарна скупштина) | House of Peoples (Dom naroda / Дом народa) | Upper | 4 | Serbs elected by the National Assembly of Republika Srpska, and Bosniaks and Croats elected by the House of Peoples of the Federation of Bosnia and Herzegovina | 15 | 255,982 |
| Botswana | Parliament of Botswana | National Assembly (Palamente ya Botswana) | Unicameral | 5 | First-past-the-post, and appointed by the President | 69 | 32,211 |
| Brazil | National Congress (Congresso Nacional) | Chamber of Deputies (Câmara dos Deputados) | Lower | 4 | Open list proportional representation with the D'Hondt method by state | 513 | 371,798 |
| Brazil | National Congress (Congresso Nacional) | Federal Senate (Senado Federal) | Upper | 8 | Partial block voting by state | 81 | 2,354,724 |
| Brunei | Legislative Council (Majlis Mesyuarat Negara) | Legislative Council (Majlis Mesyuarat Negara) | Unicameral | no timeframe | Appointed by the Sultan | 36 | 11,355 |
| Bulgaria | National Assembly (Народно събрание, Narodno sabranie) | National Assembly (Народно събрание, Narodno sabranie) | Unicameral | 4 | Closed list proportional representation with the largest remainder method by constituency with a 4% threshold | 240 | 30,685 |
| Burkina Faso | National Assembly (Assemblée nationale) | National Assembly (Assemblée nationale) | Unicameral | 5 | Proportional representation with the D'Hondt method nationwide and in constituencies | 127 | 126,281 |
| Burundi | Parliament (Parlement) | National Assembly (Assemblée nationale) | Lower | 5 | Closed list proportional representation with the D'Hondt method in constituencies with a 2% threshold | 121 | 74,570 |
| Burundi | Parliament (Parlement) | Senate (Sénat) | Upper | 5 | Elected by the communal councils | 43 | 179,577 |
| Cambodia | Parliament (សភាតំណាងរាស្ត្រ, Sâphéa Tâmnang Réastr) | National Assembly (រដ្ឋសភា, Rôdthsâphéa) | Lower | 5 | Closed list proportional representation with the D'Hondt method by province | 123 | 108,852 |
| Cambodia | Parliament (សភាតំណាងរាស្ត្រ, Sâphéa Tâmnang Réastr) | Senate (ព្រឹទ្ធសភា, Prœ̆tthsâphéa) | Upper | 6 | Appointed by the monarch, elected by the National Assembly and commune councils | 61 | 219,490 |
| Cameroon | Parliament (Parlement) | National Assembly (Assemblée nationale) | Lower | 5 | First-past-the-post and Block vote: If no list obtains an absolute majority, the one with the highest number of votes is allocated half of the seats; the remainder is allocated to the other best-placed lists through proportional representation | 180 | 97,021 |
| Cameroon | Parliament (Parlement) | Senate (Sénat) | Upper | 5 | Elected by municipal councils, and appointed by the president | 100 | 174,638 |
| Canada | Parliament (Parlement) | House of Commons (Chambre des communes) | Lower | 4 years, unless elections are called earlier | First-past-the-post voting | 338 | 104,571 |
| Canada | Parliament (Parlement) | Senate (Sénat) | Upper | Until age 75, or resignation. | Appointed by the governor general, representing the monarch, on the advice of the prime minister | 105 | 318,825 |
| Cape Verde | National Assembly (Asembleia Nacional) | National Assembly (Asembleia Nacional) | Unicameral | 5 | Closed list proportional representation with the D'Hondt method in constituencies | 72 | 4,990 |
| Central African Republic | National Assembly (Assemblée nationale) | National Assembly (Assemblée nationale) | Unicameral | 5 | Two-round system | 131 | 38,951 |
| Chad | National Assembly (Assemblée nationale / الجمعية الوطنية, aljameiat alwatania) | National Assembly (Assemblée nationale / الجمعية الوطنية, aljameiat alwatania) | Unicameral | 4 | Block voting: If no list obtains an absolute majority, the seats are allocated through proportional representation | 188 | 66,640 |
| Chile | National Congress (Congreso Nacional) | Chamber of Deputies (Cámara de Diputados) | Lower | 4 | Open list proportional representation with the D'Hondt method | 155 | 145,021 |
| Chile | National Congress (Congreso Nacional) | Senate of the Republic (Senado de la República) | Upper | 8 | Open list proportional representation with the D'Hondt method | 38 | 457,963 |
| China, People's Republic of | National People's Congress (全国人民代表大会, Quánguó Rénmín Dàibiǎo Dàhuì) | National People's Congress (全国人民代表大会, Quánguó Rénmín Dàibiǎo Dàhuì) | Unicameral | 5 | Elected by municipal, regional and provincial congresses, and People's Liberation Army | 2,980 | 448,518 |
| Colombia | Congress (Congreso) | Chamber of Representatives (Cámara de Representantes) | Lower | 4 | Open or closed list proportional representation (depending on the political party) with the D'Hondt method by state | 166 | 279,556 |
| Colombia | Congress (Congreso) | Senate (Senado) | Upper | 4 | Open or closed list proportional representation (depending on the political party) with the D'Hondt method nationwide with a 3% threshold | 102 | 454,964 |
| Comoros | Assembly of the Union (Assemblée de l'Union) | Assembly of the Union (Assemblée de l'Union) | Unicameral | 5 | Two-round system, and elected by the local assemblies | 33 | 24,181 |
| Congo, Democratic Republic of the | Parliament (Parlement) | National Assembly (Assemblée nationale) | Lower | 5 | Coexistence: Open list proportional representation with the largest remainder method in multi-member constituencies and first-past-the-post voting in single-member constituencies | 500 | 143,425 |
| Congo, Democratic Republic of the | Parliament (Parlement) | Senate (Sénat) | Upper | 5 | Elected by the provincial assemblies | 108 | 664,008 |
| Congo, Republic of the | Parliament (Parlement) | National Assembly (Assemblée nationale) | Lower | 5 | Two-round system | 151 | 28,537 |
| Congo, Republic of the | Parliament (Parlement) | Senate (Sénat) | Upper | 5 | Elected by district, local, and regional councils | 52 | 83,966 |
| Costa Rica | Legislative Assembly (Asamblea Legislativa) | Legislative Assembly (Asamblea Legislativa) | Unicameral | 4 | Closed list proportional representation with the largest remainder method by province | 57 | 75,468 |
| Croatia | Croatian Assembly (Hrvatski sabor) | Croatian Assembly (Hrvatski sabor) | Unicameral | 4 | Open list proportional representation with the D'Hondt method in constituencies with a 5% threshold | 151 | 28,414 |
| Cuba | National Assembly of People's Power (Asamblea Nacional del Poder Popular) | National Assembly of People's Power (Asamblea Nacional del Poder Popular) | Unicameral | 5 | Popular vote and approval by special candidacy commissions | 605 | 18,308 |
| Cyprus | House of Representatives (Βουλή των Αντιπροσώπων, Vouli Antiprosópon / Temsilciler Meclisi) | House of Representatives (Βουλή των Αντιπροσώπων, Vouli Antiprosópon / Temsilciler Meclisi) | Unicameral | 5 | Open list proportional representation with the largest remainder method by constituency | 56 | 18,632 |
| Czech Republic | Parliament of the Czech Republic (Parlament České republiky) | Chamber of Deputies (Poslanecká sněmovna) | Lower | 4 | Open list proportional representation with the D'Hondt method by region with a 5% threshold | 200 | 52,811 |
| Czech Republic | Parliament of the Czech Republic (Parlament České republiky) | Senate (Senát) | Upper | 6 | Two-round system (staggered elections) | 81 | 130,397 |
| Denmark | People's Assembly (Folketinget) | People's Assembly (Folketinget) | Unicameral | 4 | Open list proportional representation with the D'Hondt method in constituencies with a 2% threshold including the Faroe Islands and Greenland seats | 179 | 30,969 |
| Djibouti | National Assembly (Assemblée nationale / الجمعية الوطنية, aljameiat alwatania) | National Assembly (Assemblée nationale / الجمعية الوطنية, aljameiat alwatania) | Unicameral | 5 | Block vote and closed list proportional representation by constituencies: The list obtaining an absolute or relative majority of votes is allocated 80% of the seats; the remainder is allocated to the other best-placed lists which obtained at least 10% of the valid votes through proportional representation; if no other list obtains 10% of the valid votes, the remaining seats will be allocated to the party which won the majority or relative majority of the valid votes | 65 | 12,587 |
| Dominica | House of Assembly | House of Assembly | Unicameral | 5 | First-past-the-post voting, and appointed by the President | 32 | 3,394 |
| Dominican Republic | National Congress (Congreso Nacional) | Chamber of Deputies (Cámara de Diputados) | Lower | 4 | Open list proportional representation with the D'Hondt method by province and nationwide with a 1% threshold for the nationwide seats | 190 | 51,520 |
| Dominican Republic | National Congress (Congreso Nacional) | Senate (Senado) | Upper | 4 | First-past-the-post voting | 32 | 293,088 |
| East Timor | National Parliament (Parlamentu Nasionál / Parlamento Nacional) | National Parliament (Parlamentu Nasionál / Parlamento Nacional) | Unicameral | 5 | Closed list proportional representation with the D'Hondt method nationwide with a 3% threshold | 65 | 16,408 |
| Ecuador | National Assembly (Asamblea Nacional) | National Assembly (Asamblea Nacional) | Unicameral | 4 | Parallel voting: Closed list proportional representation in a nationwide constituency and first-past-the-post voting | 137 | 116,802 |
| Egypt | Parliament (برلمان, Barlaman) | Senate (مجلس الشيوخ, Majlis Alshuyukh) | Upper | 5 | | 300 | 375,722 |
| Egypt | Parliament (برلمان, Barlaman) | House of Representatives (مجلس النواب, Majilis Al-Nuwab) | Lower | 5 | Parallel voting: First-past-the-post voting, block vote, and appointed by the President | 596 | 150,983 |
| El Salvador | Legislative Assembly (Asamblea Legislativa) | Legislative Assembly (Asamblea Legislativa) | Unicameral | 3 | Open list proportional representation with the largest remainder method by department and nationwide | 84 | 68,382 |
| Equatorial Guinea | Parliament (Parlamento / Parlement / Parlamento) | Chamber of Deputies (Cámara de los Diputados / Chambre des députés / Câmara dos Deputados) | Lower | 5 | Closed list proportional representation in constituencies with a 10% threshold | 100 | 16,220 |
| Equatorial Guinea | Parliament (Parlamento / Parlement / Parlamento) | Senate (Senado / Sénat / Senado) | Upper | | Closed list proportional representation with a 10% threshold, and appointed by the President | 70 | 23,171 |
| Eritrea | National Assembly (ሃገራዊ ባይቶ, Hagerawi Baito) | National Assembly (ሃገራዊ ባይቶ, Hagerawi Baito) | Unicameral | 5 | Popular vote | 104 | 50,878 |
| Estonia | State Assembly (Riigikogu) | State Assembly (Riigikogu) | Unicameral | 4 | Open list proportional representation with the D'Hondt method in constituencies with a 5% threshold | 101 | 12,814 |
| Eswatini | Parliament (Liblanda) | House of Assembly (Indlu yeMalunga) | Lower | 5 | majority | 55 | 22,181 |
| Eswatini | Parliament (Liblanda) | Senate (Indlu yeTimphunga) | Upper | | Appointed by the King | 30 | 40,666 |
| Ethiopia | Parliament (የፌዴራል ፓርላማ ምክር ቤት, Ye-Fēdēralawī Parilama Mikir Bēt) | House of Peoples' Representatives (የሕዝብ ተወካዮች ምክር ቤት, Ye-Hizib Tewekayochi Mikir Bē) | Lower | 5 | First-past-the-post voting | 547 | 135,134 |
| Ethiopia | Parliament (የፌዴራል ፓርላማ ምክር ቤት, Ye-Fēdēralawī Parilama Mikir Bēt) | House of Federation (የፌዴሬሽን ምክር ቤት, Ye-Fēdērēshin Mikir Bēt) | Upper | 5 | Elected by State Councils | 112 | 659,986 |
| Federated States of Micronesia | Congress | Congress | Unicameral | 4 | First-past-the-post voting | 14 | 7,642 |
| Fiji | Parliament | Parliament | Unicameral | 4 | Open list proportional representation with the D'Hondt method nationwide with a 5% threshold | 50 | 16,745 |
| Finland | Parliament (Eduskunta / Riksdagen) | Parliament (Eduskunta / Riksdagen) | Unicameral | 4 | Open list proportional representation with the D'Hondt method in constituencies, and first-past-the-post for Åland's lone seat | 200 | 25,900 |
| France | Parliament (Parlement) | National Assembly (Assemblée nationale) | Lower | 5 | Two-round system | 577 | 113,258 |
| France | Parliament (Parlement) | Senate (Sénat) | Upper | 6 | Elected indirectly by officials including regional councilors, department councilors, mayors, city councilors, and members of the National Assembly; two-round or proportional by department depending on the number of seats. | 348 | 187,787 |
| Gabon | Parliament (Parlement) | National Assembly (Assemblée nationale) | Lower | 5 | First-past-the-post voting, and appointed by the President | 121 | 12,190 |
| Gabon | Parliament (Parlement) | Senate (Sénat) | Upper | 6 | Indirectly elected by local and départemental councillors | 102 | 14,460 |
| Gambia | National Assembly | National Assembly | Unicameral | 5 | First-past-the-post voting, and appointed by the President | 58 | 25,673 |
| Georgia | Parliament of Georgia (საქართველოს პარლამენტი, Sak'art'velos Parlamenti) | Parliament of Georgia (საქართველოს პარლამენტი, Sak'art'velos Parlamenti) | Unicameral | 4 | Parallel voting: Closed list proportional representation in a nationwide constituency with a 5% threshold, and first-past-the-post | 150 | 29,794 |
| Germany | Federal Diet (Bundestag) | Federal Diet (Bundestag) | Lower | 4 | Closed list mixed-member proportional representation with the Sainte-Laguë method by state with a 5% threshold, and first-past-the-post | 736 | 113,031 |
| Germany | Federal Council (Bundesrat) | Federal Council (Bundesrat) | Upper | Dependent on individual state elections | Delegated from state governments | 69 | 1,185,501 |
| Ghana | Parliament | Parliament | Unicameral | 4 | First-past-the-post voting | 275 | 106,286 |
| Greece | Hellenic Parliament (Βουλή των Ελλήνων, Vouli ton Ellinon) | Hellenic Parliament (Βουλή των Ελλήνων, Vouli ton Ellinon) | Unicameral | 4 | Open list reinforced proportional representation with the D'Hondt method in constituencies with a 3% threshold | 300 | 35,958 |
| Grenada | Parliament | House of Representatives | Lower | 5 | First-past-the-post voting | 15 | 7,333 |
| Grenada | Parliament | Senate | Upper | 5 | Appointed by the government and by the leader of opposition | 13 | 8,461 |
| Guatemala | Congress of the Republic (Congreso de la República) | Congress of the Republic (Congreso de la República) | Unicameral | 4 | proportional closed list | 160 | 80,557 |
| Guinea | National Assembly (Assemblée nationale) | National Assembly (Assemblée nationale) | Unicameral | 5 | proportional closed list | 114 | 88,227 |
| Guinea-Bissau | National People's Assembly (Assembleia Nacional Popular) | National People's Assembly (Assembleia Nacional Popular) | Unicameral | 4 | proportional closed list | 100 | 13,454 |
| Guyana | National Assembly | National Assembly | Unicameral | 5 | popular vote and appointed by the President | 65 | 11,583 |
| Haiti | National Assembly (Assemblée nationale / Asanble Nasyonal) | Chamber of Deputies (Chambre des députés / Chanm Depite) | Lower | 4 | proportional | 119 | 98,181 |
| Haiti | National Assembly (Assemblée nationale / Asanble Nasyonal) | Senate (Sénat / Sena) | Upper | 6 | | 30 | 323,997 |
| Honduras | National Congress (Congreso Nacional) | National Congress (Congreso Nacional) | Unicameral | 4 | proportional open list | 128 | 58,823 |
| Hungary | National Assembly (Országgyűlés) | National Assembly (Országgyűlés) | Unicameral | 4 | proportional open list and Scorporo | 199 | 25,860 |
| Iceland | Assembly of All (Alþingi) | Assembly of All (Alþingi) | Unicameral | 4 | proportional | 63 | 5,080 |
| India | Parliament (संसद, Sansad) | House of the People (लोक सभा, Lok Sabha) | Lower | 5 | First-past-the-post | 543 | 2,192,379 |
| India | Parliament (संसद, Sansad) | Council of States (राज्य सभा, Rajya Sabha) | Upper | 6 | Single transferable vote (233 members are elected by the legislative assemblies of the States/Union territories, 12 members are nominated by the President) | 245 | 4,847,900 |
| Indonesia | People's Consultative Assembly (Majelis Permusyawaratan Rakyat) | People's Representative Council (Dewan Perwakilan Rakyat) | Lower | 5 | proportional open list | 575 | 467,101 |
| Indonesia | People's Consultative Assembly (Majelis Permusyawaratan Rakyat) | Regional Representative Council (Dewan Perwakilan Daerah) | Upper | 5 | Single non-transferable vote | 136 | 1,974,875 |
| Iran | Islamic Consultative Assembly (مجلس شورای اسلامی, Majles-e Showrā-ye Eslāmī) | Islamic Consultative Assembly (مجلس شورای اسلامی, Majles-e Showrā-ye Eslāmī) | Unicameral | 4 | popular vote | 290 | 259,136 |
| Iraq | Council of Representatives of Iraq (مجلس النواب العراقي, Majlis Al-Niwab Al-Iraqi / ئه‌نجومه‌نی نوێنه‌ران, Enjumen-e Nûnerên) | Council of Representatives of Iraq (مجلس النواب العراقي, Majlis Al-Niwab Al-Iraqi / ئه‌نجومه‌نی نوێنه‌ران, Enjumen-e Nûnerên) | Unicameral | 4 | proportional open list | 329 | 95,782 |
| Ireland | Parliament (Oireachtas) | President of Ireland (Uachtarán) | President-in-Parliament | 7 | Instant-runoff voting | N/A | N/A |
| Ireland | Parliament (Oireachtas) | House of Representatives of Ireland (Dáil Éireann) | Lower | 5 | Proportional Representation Single Transferable Vote | 160 | 27,640 |
| Ireland | Parliament (Oireachtas) | Senate of Ireland (Seanad Éireann) | Upper | 5 | Appointed by the prime minister, elected by local and national elected representatives, and elected by graduates of universities | 60 | 76,470 |
| Israel | Assembly (כנסת, Knesset) | Assembly (כנסת, Knesset) | Unicameral | 4 | proportional closed list | 120 | 61,768 |
| Italy | Parliament (Parlamento) | Chamber of Deputies (Camera dei Deputati) | Lower | 5 | parallel voting (245 seats by proportional representation, 147 seats by first past the post and 8 abroad by proportional representation) | 400 | 152,738 |
| Italy | Parliament (Parlamento) | Senate of the Republic (Senato della Repubblica) | Upper | 5 | parallel voting (122 seats by proportional representation, 74 seats by first past the post and 4 abroad by proportional representation), 5 members appointed by the President and former Presidents by right | 200 | 296,580 |
| Ivory Coast | Parliament (Parlement) | National Assembly (Assemblée nationale) | Lower | 5 | majority | 255 | 294,529 |
| Ivory Coast | Parliament (Parlement) | Senate (Sénat) | Upper | 5 | Elected by district and provincial councils, and appointed by the President | 120 | 197,837 |
| Jamaica | Parliament | House of Representatives | Lower | 5 | First-past-the-post voting | 63 | 45,860 |
| Jamaica | Parliament | Senate | Upper | 5 | Appointed by the governor-general | 21 | 137,580 |
| Japan | Diet (国会, Kokkai) | House of Representatives (衆議院, shūgiin) | Lower | 4 | proportional and First-past-the-post voting | 465 | 270,817 |
| Japan | Diet (国会, Kokkai) | House of Councillors (参議院, Sangiin) | Upper | 6 | proportional and Single non-transferable vote | 248 | 514,000 |
| Jordan | Parliament (مجلس الأمة, Majlis al-Umma) | House of Representatives (مجلس النواب, Majlis al-Nuwaab) | Lower | 4 | Single non-transferable vote | 130 | 46,760 |
| Jordan | Parliament (مجلس الأمة, Majlis al-Umma) | Senate (مجلس الأعيان, Majlis al-Aayan) | Upper | 6 | Appointed by the monarch | 75 | 93,520 |
| Kazakhstan | Parliament (Парламент, Parlament) | Assembly (Мәжіліс, Mäjilis) | Lower | 5 | | 107 | 207,854 |
| Kazakhstan | Parliament (Парламент, Parlament) | Senate (Сенат, Senat) | Upper | 6 | Appointed by the President and elected by local assemblies | 49 | 340,527 |
| Kenya | Parliament (Bunge) | National Assembly (Bunge la Taifa) | Lower | 5 | parallel | 349 | 126,182 |
| Kenya | Parliament (Bunge) | Senate (Seneti) | Upper | 5 | Popular vote and appointed by the President | 67 | 657,278 |
| Kiribati | House of Assembly (Maneaba ni Maungatabu) | House of Assembly (Maneaba ni Maungatabu) | Unicameral | 4 | popular vote and appointed by Rabi Council of Leaders | 46 | 2,239 |
| Korea, North | Supreme People's Assembly (최고인민회의 / 最高人民會議, Ch'oe-go In-min Hoe-ŭi) | Supreme People's Assembly (최고인민회의 / 最高人民會議, Ch'oe-go In-min Hoe-ŭi) | Unicameral | 5 | popular vote | 687 | 36,390 |
| Korea, South | National Assembly (국회 / 國會, Gukhoe) | National Assembly (국회 / 國會, Gukhoe) | Unicameral | 4 | majority and proportional | 300 | 166,691 |
| Kuwait | National Assembly (مجلس الأمة, Majlis al-Umma) | National Assembly (مجلس الأمة, Majlis al-Umma) | Unicameral | 4 | popular vote and appointed by the emir | 50 | 71,328 |
| Kyrgyzstan | Supreme Council (Жогорку Кеңеш, Joğorku Keñeş) | Supreme Council (Жогорку Кеңеш, Joğorku Keñeş) | Unicameral | 5 | popular vote | 90 | 44,690 |
| Laos | National Assembly (ສະພາແຫ່ງຊາດ, Sapha Aehngsad) | National Assembly (ສະພາແຫ່ງຊາດ, Sapha Aehngsad) | Unicameral | 5 | one-party state closed list | 115 | 48,148 |
| Latvia | Parliament (Saeima) | Parliament (Saeima) | Unicameral | 4 | proportional closed list | 100 | 20,703 |
| Lebanon | Parliament (مجلس النواب, Majlis an-Nuwwab / Chambre des Députés) Also: National Assembly (Assemblée nationale) | Parliament (مجلس النواب, Majlis an-Nuwwab / Chambre des Députés) Also: National Assembly (Assemblée nationale) | Unicameral | 4 | proportional/party list | 128 | 33,000 |
| Lesotho | Parliament (Palamente ea Lesotho) | National Assembly (Lekhotleng la Sechaba) | Lower | 5 | popular vote and proportional | 120 | 16,927 |
| Lesotho | Parliament (Palamente ea Lesotho) | Senate (Ntlong ea Mahosana) | Upper | 5 | appointed by principal chiefs and by the ruling party | 33 | 61,556 |
| Liberia | Legislature | House of Representatives | Lower | 6 | majority | 73 | 47,624 |
| Liberia | Legislature | Senate | Upper | 9 | majority | 30 | 115,896 |
| Libya | House of Representatives (مجلس النواب, Majlis an-Nuwwab) | House of Representatives (مجلس النواب, Majlis an-Nuwwab) | Unicameral | | Parallel voting: First-past-the-post, single non-transferable vote, and proportional representation | 200 | 28,353 |
| Liechtenstein | Diet (Landtag) | Diet (Landtag) | Unicameral | 4 | proportional closed list | 25 | 1,451 |
| Lithuania | Parliament (Seimas) | Parliament (Seimas) | Unicameral | 4 | proportional | 141 | 21,658 |
| Luxembourg | Chamber of Deputies (D'Chamber / Chambre des députés / Abgeordnetenkammer) | Chamber of Deputies (D'Chamber / Chambre des députés / Abgeordnetenkammer) | Unicameral | 5 | Open list proportional representation, allocated by the D'Hondt method in four constituencies | 60 | 11,013 |
| Madagascar | Parliament (Palemanta / Parlement) | National Assembly (Antenimieram-Pirenena / Assemblée nationale) | Lower | 5 | | 160 | 137,078 |
| Madagascar | Parliament (Palemanta / Parlement) | Senate (Antenimierandoholona / Sénat) | Upper | 5 | | 33 | 664,430 |
| Malawi | National Assembly | National Assembly | Unicameral | 5 | First-past-the-post voting | 193 | 76,809 |
| Malaysia | Parliament (Parlimen) | House of Representatives (Dewan Rakyat) | Lower | 5 | First-past-the-post voting | 222 | 127,631 |
| Malaysia | Parliament (Parlimen) | Senate (Dewan Negara) | Upper | 3 | 26 appointed by the State Legislative Assemblies, 2 for each state and 44 appointed by the Yang di-Pertuan Agong, of which 4 are for the Federal Territories. | 70 | 404,773 |
| Maldives | People's Assembly (ރައްޔިތުންގެ މަޖިލިސް, Rayyithunge Majilis) | People's Assembly (ރައްޔިތުންގެ މަޖިލިސް, Rayyithunge Majilis) | Unicameral | 5 | First-past-the-post voting | 85 | 4,266 |
| Mali | National Assembly (Assemblée nationale) | National Assembly (Assemblée nationale) | Unicameral | 4 | 147 elected in single or multi-member constituencies, using a runoff system. 13 elected by overseas Malians. | 160 | 90,732 |
| Malta | Parliament (Il-Parlament) | President of Malta | President-in-Parliament | 5 | Appointed by the House of Representatives | N/A | N/A |
| Malta | Parliament (Il-Parlament) | House of Representatives (Kamra tad-Deputati) | Unicameral | 5 | Single transferable vote | 69 | 5,950 |
| Marshall Islands | Legislature (Nitijeļā) | Legislature (Nitijeļā) | Unicameral | 4 | Single and multi-member constituencies | 33 | 2,060 |
| Mauritania | Parliament (البرلمان, al-Barlamān / Parlement) | National Assembly (الجمعية الوطنية, al-Jamʻīyah al-Waṭanīyah / 𞤀𞤧𞤢𞥄𞤥𞤦𞤫𞤤𞤫 𞤲𞤺𞤫𞤲𞤲𞤣𞤭, Asaambele ngenndi / Assemblée nationale) | Unicameral | 5 | Parallel voting: 50% seats elected via closed list proportional representation with the largest remainder method across three national lists and some urban districts, 50% elected via a general ticket with a two-round system by electoral district | 176 | N/A |
| Mauritius | National Assembly (Assemblée nationale) | National Assembly (Assemblée nationale) | Unicameral | 5 | | 65 | 17,614 |
| Mexico | Congress of the Union (Congreso de la Unión) | Chamber of Deputies (Cámara de Diputados) | Lower | 3 | Parallel voting: Largest remainder method (Hare quota) (200 seats) / FPTP (300 seats) | 500 | 227,821 |
| Mexico | Congress of the Union (Congreso de la Unión) | Chamber of Senators (Cámara de Senadores) | Upper | 6 | Parallel voting: Largest remainder method (Hare quota) | 128 | 889,926 |
| Moldova | Parliament (Parlamentul) | Parliament (Parlamentul) | Unicameral | 4 | | 101 | 33,498 |
| Monaco | National Council (Conseil National) | National Council (Conseil National) | Unicameral | 5 | Panachage under party-list proportional representation (16), party-list proportional representation (8) | 24 | 1,473 |
| Mongolia | State Great Assembly (Улсын Их Хурал, Ulsyn Ikh Khural) | State Great Assembly (Улсын Их Хурал, Ulsyn Ikh Khural) | Unicameral | 4 | Plurality-at-large voting | 126 | 36,245 |
| Montenegro | Assembly (Skupština, Скупштина) | Assembly (Skupština, Скупштина) | Unicameral | 4 | Closed list proportional representation using the D'Hondt method in a single nationwide constituency with a 3% electoral threshold with lower thresholds for minority groups under certain circumstances | 81 | 7,719 |
| Morocco | Parliament (البرلمان المغربي, Barlaman almaghrib / ⴰⴱⵕⵍⴰⵎⴰⵏ ⴰⵎⵖⵔⵉⴱⵉ / Parlement) | House of Representatives (مجلس النواب, Majlis al-Nuwab / ⴰⴳⵔⴰⵡ ⵉⵎⴰⵔⴰⵢⴻⵏ, Asqqim n Imura / Chambre des représentants) | Lower | 5 | Mixed member majoritarian: Single non-transferable vote for 305 seats, 60 seats reserved for women and 30 seats reserved for young people under 40 by proportional representation | 395 | 100,444 |
| Morocco | Parliament (البرلمان المغربي, Barlaman almaghrib / ⴰⴱⵕⵍⴰⵎⴰⵏ ⴰⵎⵖⵔⵉⴱⵉ / Parlement) | House of Councillors (مجلس المستشارين, Majlis al-Mustasharin / ⴰⵙⵇⵇⵉⵎ ⵏ ⵉⵏⵙⴼⴰⵡⵏ, Asqqim n Insfawn / Chambre des conseillers) | Upper | 6 | Indirect election: 72 members are elected at the Kingdom's regional level, 20 in each region by a single electoral college made up of all those in the relevant region that have been elected to specific professional associations, 8 in each region by an electoral college made up of those elected from the most representative employers' professional organizations, 20 by a nationwide electoral college made up of employees | 270 | 120,905 |
| Mozambique | Assembly of the Republic (Assembleia da República) | Assembly of the Republic (Assembleia da República) | Unicameral | 5 | proportional party list | 250 | 85,588 |
| Myanmar (Burma) | Assembly of the Union (ပြည်ထောင်စုလွှတ်တော်, Pyidaungsu Hluttaw) | House of Representatives (ပြည်သူ့လွှတ်တော်, Pyithu Hluttaw) | Lower | 5 | popular vote and appointed by the military | 440 | 137,000 |
| Myanmar (Burma) | Assembly of the Union (ပြည်ထောင်စုလွှတ်တော်, Pyidaungsu Hluttaw) | House of Nationalities (အမျိုးသားလွှတ်တော်, Amyotha Hluttaw) | Upper | 5 | popular vote and appointed by the military | 224 | 269,107 |
| Namibia | Parliament | National Assembly | Lower | 5 | Closed list proportional representation and appointments by the President | 104 | 26,923 |
| Namibia | Parliament | National Council | Upper | 6 | Indirect election by Regional Councils | 26 | 80,769 |
| Nauru | Parliament (Naoero parliament) | Parliament (Naoero parliament) | Unicameral | 3 | Dowdall system | 19 | 521 |
| Nepal | Federal Parliament (संघीय संसद, Sanghiya Sansad) | House of Representatives (प्रतिनिधि सभा, Pratinidi Sabha) | Lower | 5 | Mixed member majoritarian (165 members elected through First-past-the-post voting and 110 elected through proportional representation voting method) | 275 | 105,392 |
| Nepal | Federal Parliament (संघीय संसद, Sanghiya Sansad) | National Assembly (राष्ट्रिय सभा, Rastriya Sabha) | Upper | 6 | Indirect single transferable vote and 3 members appointed by the President | 59 | 491,233 |
| Netherlands | States General (Staten-Generaal) | House of Representatives (Tweede Kamer, lit. 'Second Chamber') | Lower | 4 | Party-list proportional representation | 150 | 111,533 |
| Netherlands | States General (Staten-Generaal) | Senate (Eerste Kamer, lit. 'First Chamber') | Upper | 4 | Indirect party-list proportional (by members of the states-provincial and the Caribbean Electoral colleges for the Senate) | 75 | 223,066 |
| New Zealand | Parliament (Pāremata) | House of Representatives (Whare o ngā Māngai) | Unicameral | 3 | Closed list mixed-member proportional representation with a 5% threshold | 120 | 33,566 |
| Nicaragua | National Assembly (Asamblea Nacional) | National Assembly (Asamblea Nacional) | Unicameral | 5 | | 90 | 64,034 |
| Niger | National Assembly (Assemblée nationale) | National Assembly (Assemblée nationale) | Unicameral | 5 | | 171 | 139,210 |
| Nigeria | National Assembly | House of Representatives | Lower | 4 | | 360 | 388,898 |
| Nigeria | National Assembly | Senate | Upper | 4 | | 109 | 1,284,436 |
| North Macedonia | Assembly (Собрание, Sobranie) | Assembly (Собрание, Sobranie) | Unicameral | 4 | | 120 | 16,736 |
| Norway | Great Assembly (Stortinget) | Great Assembly (Stortinget) | Unicameral | 4 | proportional mixed | 169 | 29,785 |
| Oman | Council of Oman (مجلس عُـمان, Majlis euman) | Consultative Assembly (مجلس الشورى, Majlis al-Shura) | Lower | 4 | | 84 | 33,017 |
| Oman | Council of Oman (مجلس عُـمان, Majlis euman) | Council of State (مجلس الدولة, Majlis al-Dawla) | Upper | 4 | | 85 | 32,628 |
| Pakistan | Parliament of Pakistan (پارلیمنٹ, Pārlīmān or مجلسِ شوریٰ, Majlis-e-Shūrā, lit. 'Consultative Assembly') | National Assembly (ایوان زیریں, Aiwān-e-Zairīñ, lit. 'Lower house') | Lower | 5 | | 342 | 537,023 |
| Pakistan | Parliament of Pakistan (پارلیمنٹ, Pārlīmān or مجلسِ شوریٰ, Majlis-e-Shūrā, lit. 'Consultative Assembly') | Senate (ایوانِ بالا, Aiwān-e-Bālā, lit. 'Upper house') | Upper | 6 | | 104 | 1,735,000 |
| Palau | National Congress (Olbiil era Kelulau) | House of Delegates | Lower | 4 | majority | 16 | 1,309 |
| Palau | National Congress (Olbiil era Kelulau) | Senate | Upper | 4 | majority | 13 | 2,328 |
| State of Palestine | Legislative Council (المجلس التشريعي, Al-Majlis al-Tashrī'iyy) | Legislative Council (المجلس التشريعي, Al-Majlis al-Tashrī'iyy) | Unicameral | | | 132 | 32,277 |
| Panama | National Assembly (Asamblea Nacional) | National Assembly (Asamblea Nacional) | Unicameral | 5 | | 71 | 47,969 |
| Papua New Guinea | National Parliament | National Parliament | Unicameral | 5 | | 109 | 56,766 |
| Paraguay | Congress (Congreso) | Chamber of Deputies (Cámara de Diputados) | Lower | 5 | | 80 | 80,681 |
| Paraguay | Congress (Congreso) | Chamber of Senators (Cámara de Senadores) | Upper | 5 | | 45 | 143,434 |
| Peru | Congress of the Republic (Congreso de la República / Rimana Wasin) | Congress of the Republic (Congreso de la República / Rimana Wasin) | Unicameral | 5 | | 130 | 217,082 |
| Philippines | Congress (Kongreso) | House of Representatives (Kapulungan ng mga Kinatawan or Mababang Kapulungan, lit. 'Lower house' / Cámara de Representantes) | Lower | 3 | Parallel voting: Largest remainder method via closed lists with a three-seat cap (20% of seats), and first-past-the-post voting (80% of seats) | 304 | 341,364 |
| Philippines | Congress (Kongreso) | Senate (Senado or Mataas na Kapulungan, lit. 'Upper house') | Upper | 6 | bloc voting. Voter is allocated 12 votes. 1/2 of the seats are contested every 3 years with the 12 elected senators having the largest portion of the National Popular Vote | 24 | 4,323,958 |
| Poland | Parliament of Poland (Parlament) National Assembly (Zgromadzenie Narodowe) | Sejm (Sejm) | Lower | 4 | proportional open list | 460 | 83,697 |
| Poland | Parliament of Poland (Parlament) National Assembly (Zgromadzenie Narodowe) | Senate (Senat) | Upper | 4 | majority | 100 | 385,010 |
| Portugal | Assembly of the Republic (Assembleia da República) | Assembly of the Republic (Assembleia da República) | Unicameral | 4 | proportional party list | 230 | 45,920 |
| Qatar | Consultative Assembly (مجلس الشورى, Majlis ash-Shura) | Consultative Assembly (مجلس الشورى, Majlis ash-Shura) | Unicameral | | | 35 | 52,958 |
| Romania | Parliament (Parlamentul) | Chamber of Deputies (Camera Deputaților) | Lower | 4 | | 329 | 58,416 |
| Romania | Parliament (Parlamentul) | Senate (Senat) | Upper | 4 | | 137 | 139,005 |
| Russia | Federal Assembly (Федеральное Собрание, Federalnoye Sobraniye) | State Duma (Государственная Дума, Gosudarstvennaya Duma) | Lower | 5 | parallel (First-past-the-post voting for 225 members and proportional party list for 225 members) | 450 | 318,000 |
| Russia | Federal Assembly (Федеральное Собрание, Federalnoye Sobraniye) | Federation Council (Совет Федерации, Sovet Federatsii) | Upper | dependent on individual elections in the federal subjects (4 or 5) | senators are delegated from the executive and legislative bodies of the federal subjects | 170 | 862,048 |
| Rwanda | Parliament (Inteko Ishinga Amategeko / Parlement) | Chamber of Deputies (Umutwe w'Abadepite / Chambre des députés) | Lower | 5 | | 80 | 146,121 |
| Rwanda | Parliament (Inteko Ishinga Amategeko / Parlement) | Senate (Umutwe wa Sena / Sénat) | Upper | 8 | | 26 | 449,603 |
| Saint Kitts and Nevis | National Assembly | National Assembly | Unicameral | 5 | | 15 | 3,686 |
| Saint Lucia | Parliament | House of Assembly | Lower | 5 | | 17 | 10,221 |
| Saint Lucia | Parliament | Senate | Upper | | | 11 | 15,796 |
| Saint Vincent and the Grenadines | House of Assembly | House of Assembly | Unicameral | 5 | | 21 | 5,714 |
| Samoa | Parliament (Palemene) | Legislative Assembly (Fono Aoao Faitulafono) | Unicameral | 5 | | 51 | 3,916 |
| San Marino | Grand and General Council (Consiglio Grande e Generale) | Grand and General Council (Consiglio Grande e Generale) | Unicameral | 5 | | 60 | 536 |
| São Tomé and Príncipe | National Assembly (Assembleia Nacional) | National Assembly (Assembleia Nacional) | Unicameral | 4 | | 55 | 3,330 |
| Saudi Arabia | Consultative Assembly (مجلس الشورى, Majlis Ash-Shura) | Consultative Assembly (مجلس الشورى, Majlis Ash-Shura) | non-parliamentary | 4 | Appointed by the King | 150 | 220,000 |
| Senegal | National Assembly (Assemblée nationale) | National Assembly (Assemblée nationale) | Unicameral | 5 | | 150 | 85,701 |
| Serbia | National Assembly (Народна скупштина / Narodna skupština) | National Assembly (Народна скупштина / Narodna skupština) | Unicameral | 4 | | 250 | 28,482 |
| Seychelles | National Assembly (Assemblée nationale / Lasanble Nasyonal) | National Assembly (Assemblée nationale / Lasanble Nasyonal) | Unicameral | 5 | | 31 | 2,709 |
| Sierra Leone | Parliament | Parliament | Unicameral | 5 | | 146 | 40,136 |
| Singapore | Parliament (Parlimen / 国家议会, Guójiā yìhuì / நாடாளுமன்றம், Nāṭāḷumaṉṟam) | Parliament (Parlimen / 国家议会, Guójiā yìhuì / நாடாளுமன்றம், Nāṭāḷumaṉṟam) | Unicameral | 5 | First-past-the-post voting (MP) (in single member constituencies), Party block voting (in group representation constituencies), and appointed by the President (NMP) | 103 | 52,360 |
| Slovakia | National Council (Národná rada) | National Council (Národná rada) | Unicameral | 4 | | 150 | 35,980 |
| Slovenia | Parliament (Državni zbor Republike Slovenije) | National Assembly (Državni zbor) | Lower | 4 | Open list proportional representation with a 4% election threshold | 90 | 22,779 |
| Slovenia | Parliament (Državni zbor Republike Slovenije) | National Council (Državni svet) | Upper | 5 | First-past-the-post indirect elections held within 'functional' interest organisations and 'local' interest communities by electoral bodies (electors). | 40 | 51,254 |
| Solomon Islands | National Parliament | National Parliament | Unicameral | 4 | | 50 | 10,460 |
| Somalia | Federal Parliament (Baarlamaanka Federaalka / لبرلمان الاتحادي, albarlaman alaitihadi) | House of the People | Lower | 4 | Appointed by president | 275 | 36,675 |
| Somalia | Federal Parliament (Baarlamaanka Federaalka / لبرلمان الاتحادي, albarlaman alaitihadi) | Senate (Aqalka Sare) | Upper | 4 | majority | 54 | 180,100 |
| South Africa | Parliament | National Assembly | Lower | 5 | | 400 | 126,466 |
| South Africa | Parliament | National Council of Provinces | Upper | | | 90 | 562,075 |
| South Sudan | National Legislature | National Legislature Assembly | Lower | | | 170 | 48,591 |
| South Sudan | National Legislature | Council of States | Upper | | Appointed by President | 50 | 165,210 |
| Spain | General Courts (Cortes Generales) | Congress of Deputies (Congreso de los Diputados) | Lower | 4, unless elections are called earlier. | proportional closed list | 350 | 131,894 |
| Spain | General Courts (Cortes Generales) | Senate (Senado) | Upper | 4, unless elections are called earlier. | 208 are appointed through general election and 57 when regional legislatures are renewed, which not always happens at the same date | 265 | 173,545 |
| Sri Lanka | Parliament (පාර්ලිමේන්තුව, Parlimenthuwa / பாராளுமன்றம், Nāṭāḷumaṉṟam) | Parliament (පාර්ලිමේන්තුව, Parlimenthuwa / பாராளுமன்றம், Nāṭāḷumaṉṟam) | Unicameral | 5 | | 225 | 90,122 |
| Sudan | National Legislature (المجلس التشريعي, Al-Maǧlis al-Ttašriyʿiy) | National Assembly (المجلس الوطني, Al-Maǧlis al-Waṭaniy | Lower | 6 | | 426 | 68,653 |
| Sudan | National Legislature (المجلس التشريعي, Al-Maǧlis al-Ttašriyʿiy) | Council of States (المجلس الولايات, Al-Maǧlis al-Wilāyāt) | Upper | 6 | | 50 | 617,880 |
| Suriname | National Assembly (Nationale Assemblée) | National Assembly (Nationale Assemblée) | Unicameral | 5 | | 51 | 10,470 |
| Sweden | Parliament (Riksdagen) | Parliament (Riksdagen) | Unicameral | 4 | Open list proportional representation through the Sainte-Laguë method with a 4% election threshold in constituencies based upon the Counties of Sweden | 349 | 27,286 |
| Syria | People's Assembly (مجلس الشعب, Majlis al-Sha'ab) | People's Assembly (مجلس الشعب, Majlis al-Sha'ab) | Unicameral | 4 | | 250 | 86,964 |
| Switzerland | Federal Assembly (Bundesversammlung / Assemblée fédérale / Assemblea federale / Assamblea federala) | National Council (Nationalrat / Conseil national / Consiglio nazionale / Cussegl naziunal) | Lower | 4 | Open-list proportional with panachage and apparentment by canton. | 200 | 40,000 |
| Switzerland | Federal Assembly (Bundesversammlung / Assemblée fédérale / Assemblea federale / Assamblea federala) | Council of States (Ständerat / Conseil des États / Consiglio degli Stati / Cussegl dals chantuns) | Upper | 4 | Each canton has one or two seats, two-round or proportional representation depending on the canton. | 46 | 173,913 |
| Tajikistan | Supreme Assembly (Маҷлиси Олии, Majlisi Oli) | Assembly of Representatives (Маҷлиси намояндагон, Majlisi namoyandagon) | Lower | 5 | | 63 | 123,809 |
| Tajikistan | Supreme Assembly (Маҷлиси Олии, Majlisi Oli) | National Assembly (Маҷлиси миллии, Majlisi Millii) | Upper | 5 | | 33 | 236,363 |
| Tanzania | National Assembly (Bunge) | National Assembly (Bunge) | Unicameral | 5 | | 384 | 120,974 |
| Thailand | National Assembly (รัฐสภา, Rạṭ̄hs̄p̣hā) | House of Representatives (สภาผู้แทนราษฎร, S̄p̣hā p̄hū̂thæn rās̄ʹḍr) | Lower | 4 | parallel (First-past-the-post voting for 400 members and proportional party list for 100 members) | 500 | 131,950 |
| Thailand | National Assembly (รัฐสภา, Rạṭ̄hs̄p̣hā) | Senate (วุฒิสภา, Wutthisapha) | Upper | 5 | Indirect limited voting with self-nomination | 200 | 329,876 |
| Togo | National Assembly (Assemblée nationale) | National Assembly (Assemblée nationale) | Unicameral | 5 | | 91 | 76,434 |
| Tonga | Legislative Assembly (Fale Alea) | Legislative Assembly (Fale Alea) | Unicameral | 4, Unless elections are called early | Single non-transferable vote | 25 | 3,962 |
| Trinidad and Tobago | Parliament | House of Representatives | Lower | 5 | | 41 | 32,139 |
| Trinidad and Tobago | Parliament | Senate | Upper | | | 31 | 42,506 |
| Tunisia | Parliament of Tunisia (البرلمان التونسي, al-Barlamān at-Tūnsī) | Assembly of the Representatives of the People (مجلس نواب الشعب, Mejlis Nuwwēb esh-She‘b) | Lower | 5 | Two-round system | 161 | 72,722 |
| Tunisia | Parliament of Tunisia (البرلمان التونسي, al-Barlamān at-Tūnsī) | National Council of Regions and Districts (المجلس الوطني للجهات والأقاليم, Al Majlis Al Watani l'il Jihet W'al Akalim) | Upper | 5 | Indirect two-round system | 77 | 152,057 |
| Turkey | Grand National Assembly (Türkiye Büyük Millet Meclisi) | Grand National Assembly (Türkiye Büyük Millet Meclisi) | Unicameral | 5 | Closed list proportional representation D'Hondt method with a 7% electoral threshold for political parties or political alliances | 600 | 135,862 |
| Turkmenistan | Assembly (Mejlis) | Assembly (Mejlis) | Unicameral | 5 | majority voting in single member constituencies. | 125 | 41,360 |
| Tuvalu | Parliament (Palamene) | Parliament (Palamene) | Unicameral | 4 | | 15 | 666 |
| Uganda | Parliament (Bunge) | Parliament (Bunge) | Unicameral | 5 | | 529 | 87,839 |
| Ukraine | Supreme Council (Верховна Рада, Verkhovna Rada) | Supreme Council (Верховна Рада, Verkhovna Rada) | Unicameral | 5 | | 450 | 101,248 |
| United Arab Emirates | Federal National Assembly (المجلس الوطني الإتحادي, Majlis Watani Ittihad) | Federal National Assembly (المجلس الوطني الإتحادي, Majlis Watani Ittihad) | Unicameral | 4 | | 40 | 206,601 |
| United Kingdom | Parliament | House of Commons | Lower | 5, unless elections are called earlier. | First-past-the-post voting in single member constituencies. | 650 | 95,787 |
| United Kingdom | Parliament | House of Lords | Upper | Life (life and hereditary peers) Until end of religious term(bishops) | Life peers appointed by the Sovereign on advice of prime minister. 92 are elected by and from hereditary peers using preferential voting. 26 Lords Spiritual are bishops of the Church of England, chosen by the Church mainly based on seniority (except that female bishops are appointed regardless of seniority). | 833 | 86,700 |
| United States | Congress | House of Representatives | Lower | 2 | Depends on the state, mainly First-past-the-post voting, in single-member constituencies. | 435 | 722,636 |
| United States | Congress | Senate | Upper | 6 | Depends on the state, mainly First-past-the-post voting. One-third of the Senate goes up for election every two years. Each state has two senators. | 100 | 3,432,530 |
| Uruguay | General Assembly (Asamblea General) | Chamber of Representatives (Cámara de Representantes) | Lower | 5 | | 99 | 33,195 |
| Uruguay | General Assembly (Asamblea General) | Chamber of Senators (Cámara de Senadores) | Upper | 5 | | 30 | 109,543 |
| Uzbekistan | Supreme Assembly (Oliy Majlis, Олий Мажлис) | Legislative Chamber (Qonunchilik palatasi, Қонунчилик палатаси) | Lower | 5 | | 150 | 194,156 |
| Uzbekistan | Supreme Assembly (Oliy Majlis, Олий Мажлис) | Senate (Senati, Сенати) | Upper | 5 | | 100 | 291,234 |
| Vanuatu | Parliament (Palamen / Parlement) | Parliament (Palamen / Parlement) | Unicameral | 4 | | 52 | 4319 |
| Vatican City/Holy See | Pontifical Commission (Pontificia Commissione / Pontificia Commissio) | Pontifical Commission (Pontificia Commissione / Pontificia Commissio) | Unicameral | 5 | | 7 | 114 |
| Venezuela | National Assembly (Asamblea Nacional) | National Assembly (Asamblea Nacional) | Unicameral | 5 | | 277 | 175,430 |
| Vietnam | National Assembly (Quốc hội) | National Assembly (Quốc hội) | Unicameral | 5 | | 500 | 176,385 |
| Yemen | Parliament | House of Representatives (مجلس النواب, Majlis al-Nuwaab) | Lower | 6 | | 301 | 81,485 |
| Yemen | Parliament | Shura Council (مجلس الشورى, Majlis ash-Shura) | Upper | Life | | 111 | 220,963 |
| Zambia | National Assembly | National Assembly | Unicameral | 5 | | 166 | 87,284 |
| Zimbabwe | Parliament | National of Assembly | Lower | 5 | | 210 | 61,971 |
| Zimbabwe | Parliament | Senate | Upper | 5 | | 40 | 325,350 |
* ↑ Assuming membership of 30. This is only an estimate; the size of the council is not fixed and the membership is not fully verified.
* ↑ There are three compensation mechanisms in addition of the basis 101 seats: if a party wins a majority then they win a majority jackpot of 54% of the seats; if a party wins over two-thirds of the seats then other parties receive additional seats to have no party above two-thirds; if no party can form a government in 6 days then a runoff election between the top-2 is held, with a 54% seats majority jackpot. Four additional seats are elected for national minorities.

### Legislatures of autonomous regions, dependencies and other territories

| Region or territory | Region or territory | Overall name of legislature | Name of house | House level | Term (years) | Voting system | Seats | Population per seat |
| Adjara | Adjara | Supreme Council of the Autonomous Republic of Adjara (აჭარის ავტონომიური რესპუბლიკის უმაღლესი საბჭო) | Supreme Council of the Autonomous Republic of Adjara (აჭარის ავტონომიური რესპუბლიკის უმაღლესი საბჭო) | Unicameral | 4 | | 21 | 16,619 |
| Åland | Åland | Legislative Assembly (Lagtinget) | Legislative Assembly (Lagtinget) | Unicameral | 4 | | 30 | 945 |
| Alderney | Alderney | States (États) | States (États) | Unicameral | 4 | | 10 | 240 |
| American Samoa | American Samoa | Legislative Assembly (Fono) | House of Representatives | Lower | 2 | | 21 | 2,643 |
| American Samoa | American Samoa | Legislative Assembly (Fono) | Senate | Upper | 4 | | 18 | 3,084 |
| Anguilla | Anguilla | House of Assembly | House of Assembly | Unicameral | 5 | | 11 | 1,222 |
| Aosta Valley | Aosta Valley | Regional Council (Consiglio regionale/Conseil) | Regional Council (Consiglio regionale/Conseil) | Unicameral | 5 | | 35 | 3,597 |
| Aruba | Aruba | Estates (Staten) | Estates (Staten) | Unicameral | 4 | | 21 | 4,832 |
| Azores | Azores | Legislative Assembly (Assembleia Legislativa) | Legislative Assembly (Assembleia Legislativa) | Unicameral | 4 | | 57 | 4,311 |
| Bangsamoro | Bangsamoro | Parliament | Parliament | Unicameral | 3 | Parallel voting | 80 | 53,414 |
| Basque Country | Basque Country | Parliament | Parliament | Unicameral | 4 | Closed party lists in three 25-seat constituencies, with seats allocated using the D'Hondt method | 75 | 29,194 |
| Bermuda | Bermuda | Parliament | House of Assembly | Lower | 5 | | 36 | 1,784 |
| Bermuda | Bermuda | Parliament | Senate | Upper | | | 11 | 5,839 |
| British Virgin Islands | British Virgin Islands | House of Assembly | House of Assembly | Unicameral | 4 | | 15 | 1,969 |
| Canary Islands | Canary Islands | Parliament (Parlamento de Canarias) | Parliament (Parlamento de Canarias) | Unicameral | 4 | | 70 | 35,000 |
| Catalonia | Catalonia | Parliament (Parlament de Catalunya) | Parliament (Parlament de Catalunya) | Unicameral | 4 | | 135 | 55,723 |
| Cayman Islands | Cayman Islands | Legislative Assembly | Legislative Assembly | Unicameral | 4 | | 18 | 3,080 |
| Cook Islands | Cook Islands | Parliament | Parliament | Unicameral | 4 | | 24 | 875 |
| Corsica | Corsica | Corsican Assembly (Assemblea di Corsica / Assemblée de Corse) | Corsican Assembly (Assemblea di Corsica / Assemblée de Corse) | Unicameral | 6 | | 63 | 5,238 |
| Crimea | Crimea | State Council (Верховна Рада / Верховный Совет / Yuqarı Radası) | State Council (Верховна Рада / Верховный Совет / Yuqarı Radası) | Unicameral | | | 100 | 22,840 |
| Curaçao | Curaçao | Estates (Staten) | Estates (Staten) | Unicameral | 4 | | 21 | 7,571 |
| Falkland Islands | Falkland Islands | Legislative Assembly | Legislative Assembly | Unicameral | 4 | | 11 | 272 |
| Faroe Islands | Faroe Islands | Law Assembly (Løgtingið) | Law Assembly (Løgtingið) | Unicameral | 4 | | 33 | 1,467 |
| French Polynesia | French Polynesia | Assembly (Assemblée de la Polynésie française) | Assembly (Assemblée de la Polynésie française) | Unicameral | 5 | At-large two-round in 8 sections, 19 seats plurality and 38 proportional, 12.5% or top-2 threshold for qualification. | 57 | 4,859 |
| Galicia | Galicia | Parliament (Parlamento da Galiza/Galicia) | Parliament (Parlamento da Galiza/Galicia) | Unicameral | 4 | | 75 | 36,649 |
| Gibraltar | Gibraltar | Parliament | Parliament | Unicameral | 4 | | 17 | 1,750 |
| Greenland | Greenland | Parliament (Inatsisartut) | Parliament (Inatsisartut) | Unicameral | 4 | | 31 | 1,830 |
| Guam | Guam | Legislature (Liheslaturan Guåhan) | Legislature (Liheslaturan Guåhan) | Unicameral | 4 | | 15 | 10,623 |
| Guernsey | Guernsey | States (États) | States (États) | Unicameral | 4 | | 45 | 1,387 |
| Hong Kong | Hong Kong | Legislative Council (立法會) | Legislative Council (立法會) | Unicameral | 4 | Multiple non-transferable vote (EC) First-past-the-post (FCs) Single non-transferable vote (GCs) | 90 | 83,368 |
| Isle of Man | Isle of Man | Tynwald (Tinvaal) | House of Keys (Kiare as Feed) | Lower | 5 | Plurality (2 members from each constituency) | 24 | 3,520 |
| Isle of Man | Isle of Man | Tynwald (Tinvaal) | Legislative Council (Yn Choonceil Slattyssagh) | Upper | 5 | Most members indirectly elected by the House of Keys | 11 | 7,681 |
| Jersey | Jersey | States Assembly (Assemblée des États) | States Assembly (Assemblée des États) | Unicameral | 4 | Mixed plurality block voting and first-past-the-post voting | 49 | 2,107 |
| Kurdistan Region | Kurdistan Region | Kurdistan Region Parliament (پەرلەمانی کوردستان) | Kurdistan Region Parliament (پەرلەمانی کوردستان) | Unicameral | 5 | | 111 | 53,109 |
| Macau | Macau | Legislative Assembly (立法會, Assembleia Legislativa) | Legislative Assembly (立法會, Assembleia Legislativa) | Unicameral | 4 | Proportional representation, functional constituencies and appointed by the Chief Executive | 29 | 19,610 |
| Madeira | Madeira | Legislative Assembly (Assembleia Legislativa) | Legislative Assembly (Assembleia Legislativa) | Unicameral | 4 | | 47 | 5,698 |
| Montserrat | Montserrat | Legislative Assembly | Legislative Assembly | Unicameral | 5 | | 9 | 546 |
| Nakhchivan Autonomous Republic | Nakhchivan Autonomous Republic | Supreme Assembly (Ali Məclisi) | Supreme Assembly (Ali Məclisi) | Unicameral | 5 | | 45 | 10,063 |
| New Caledonia | New Caledonia | Congress (Congrès Territorial) | Congress (Congrès Territorial) | Unicameral | 5 | Closed-list proportional representation by province with 5% (of registered voters) threshold | 54 | 4,547 |
| Northern Ireland | Northern Ireland | Northern Ireland Assembly (Tionól Thuaisceart Éireann) | Northern Ireland Assembly (Tionól Thuaisceart Éireann) | Unicameral | 5 | Single transferable vote | 90 | 16,767 |
| Northern Mariana Islands | Northern Mariana Islands | Commonwealth Legislature | House of Representatives | Lower | 2 | | 20 | 2,694 |
| Northern Mariana Islands | Northern Mariana Islands | Commonwealth Legislature | Senate | Upper | 2 | | 10 | 5,388 |
| Niue | Niue | Assembly | Assembly | Unicameral | 3 | | 20 | 69 |
| Pitcairn Islands | Pitcairn Islands | Island Council | Island Council | Unicameral | 3 | | 10 | 6 |
| Puerto Rico | Puerto Rico | Legislative Assembly (Asamblea Legislativa) | House of Representatives (Cámara de Representantes) | Lower | 4 | First-past-the-post voting | 51 | 63,172 |
| Puerto Rico | Puerto Rico | Legislative Assembly (Asamblea Legislativa) | Senate (Senado) | Upper | 4 | Majority | 27 | 119,326 |
| Saint Barthélemy | Saint Barthélemy | Territorial Council | Territorial Council | Unicameral | 5 | At-large two-round, 7 seats by plurality and 12 seats proportional, 10% or top-2 threshold for qualification. | 19 | 488 |
| Saint Helena | Saint Helena | Legislative Council | Legislative Council | Unicameral | 4 | | 21 | 1,266 |
| Saint Martin | Saint Martin | Territorial Council [fr] (conseil territorial) | Territorial Council [fr] (conseil territorial) | Unicameral | 6 | At-large two-round, 8 seats by plurality and 15 seats proportional, 10% or top-2 threshold for qualification. | 23 | 1,578 |
| Saint Pierre and Miquelon | Saint Pierre and Miquelon | Territorial Council | Territorial Council | Unicameral | 6 | At-large two-round, 10 seats by plurality and 9 seats proportional, 10% or top-2 threshold for qualification. | 19 | 320 |
| Sardinia | Sardinia | Regional Council (Consiglio regionale) | Regional Council (Consiglio regionale) | Unicameral | 5 | | 60 | 27,470 |
| Sark | Sark | Chief Pleas | Chief Pleas | Unicameral | | | 12 | 50 |
| Scotland | Scotland | Scottish Parliament (Pàrlamaid na h-Alba, Scots Pairlament) | Scottish Parliament (Pàrlamaid na h-Alba, Scots Pairlament) | Unicameral | 5 | Additional member system | 129 | 40,734 |
| Sicily | Sicily | Regional Assembly (Assemblea Regionale) | Regional Assembly (Assemblea Regionale) | Unicameral | 5 | | 70 | 71,675 |
| Sint Maarten | Sint Maarten | Estates (Staten) | Estates (Staten) | Unicameral | 4 | | 15 | 2,495 |
| Tokelau | Tokelau | Parliament | Parliament | Unicameral | 3 | | 20 | 70 |
| Trentino-Alto Adige/Südtirol | Trentino | Regional council | Provincial Council of Trento (Consiglio provinciale) | Unicameral | 5 | | 35 | 15,405 |
| Trentino-Alto Adige/Südtirol | South Tyrol | Regional council | Landtag | Unicameral | 5 | | 35 | 14,621 |
| Turks and Caicos Islands | Turks and Caicos Islands | House of Assembly | House of Assembly | Unicameral | 4 | | 21 | 1,498 |
| U.S. Virgin Islands | U.S. Virgin Islands | Legislature | Legislature | Unicameral | 2 | | 15 | 7,093 |
| Vojvodina | Vojvodina | Assembly (Скупштина / Skupština / Képviselőháza / Adunarea / Zhromaždenie) | Assembly (Скупштина / Skupština / Képviselőháza / Adunarea / Zhromaždenie) | Unicameral | 4 | Proportional representation in a single constituency with a 5% threshold and seats being allocated using d'Hondt method | 120 | 16,098 |
| Wales | Wales | Senedd (Welsh Parliament / Senedd Cymru) | Senedd (Welsh Parliament / Senedd Cymru) | Unicameral | 5 | Closed-list | 96 | 32,625 |
| Wallis and Futuna | Wallis and Futuna | Territorial Assembly (Assemblée Territoriale) | Territorial Assembly (Assemblée Territoriale) | Unicameral | 5 | Proportional representation by constituency | 20 | 650 |
| Zanzibar | Zanzibar | House of Representatives (Baraza la Wawakilishi) | House of Representatives (Baraza la Wawakilishi) | Unicameral | 5 | First-past-the-post voting | 88 | 17,086 |
* ↑ Seats allocation is based on the runoff, unless a list reaches 50% in their section in the first round. Lists with 5% in the first round can merge with other qualified lists.
* ↑ Seats allocation is based on the runoff, unless a list reaches 50% and a quarter of registered voters in the first round. Lists with 5% in the first round can merge with other qualified lists.
* ↑ Seats allocation is based on the runoff, unless a list reaches 50% and a quarter of registered voters in the first round. Lists with 5% in the first round can merge with other qualified lists.
* ↑ Seats allocation is based on the runoff, unless a list reaches 50% and a quarter of registered voters in the first round. Lists with 5% in the first round can merge with other qualified lists.

### Legislatures of non-UN states (including unrecognized and disputed territories)

| non-UN state | Overall name of legislature | Name of house | House level | Term (years) | Voting system | Seats | Population per seat |
| Abkhazia | People's Assembly (Жәлар Реизара, Zhelar Reizara) | People's Assembly (Жәлар Реизара, Zhelar Reizara) | Unicameral | 5 | | 35 | 6,877 |
| Kosovo | Assembly of Kosovo (Albanian: Kuvendi i Kosovës, Serbian Cyrillic: Скупштина Косова) | Assembly of Kosovo (Albanian: Kuvendi i Kosovës, Serbian Cyrillic: Скупштина Косова) | Unicameral | 4 | | 120 | 15,493 |
| Northern Cyprus | Assembly of the Republic (Cumhuriyet Meclisi) | Assembly of the Republic (Cumhuriyet Meclisi) | Unicameral | 5 | | 50 | 5,898 |
| Sahrawi Arab Democratic Republic | Sahrawi National Council (المجلس الوطني الصحراوي Al-Majlis al-Watani al-Sahrawi) | Sahrawi National Council (المجلس الوطني الصحراوي Al-Majlis al-Watani al-Sahrawi) | Unicameral | 2 | | 53 | |
| Somaliland | Parliament (Baarlamaanka) | House of Representatives (Golaha Wakiilada) | Lower | 5 | | 82 | 42,682 |
| Somaliland | Parliament (Baarlamaanka) | House of Elders (Golaha Guurtida) | Upper | 6 | | 82 | 42,682 |
| South Ossetia | Parliament | Parliament | Unicameral | 5 | | 34 | 2,117 |
| Taiwan | Legislative Yuan (立法院 Lìfǎ Yùan) | Legislative Yuan (立法院 Lìfǎ Yùan) | Unicameral | 4 | First-past-the-post voting, Closed party-list proportional representation and indigenous seats with single non-transferable vote | 113 | 208,754 |
| Central Tibetan Administration (in exile) | Parliament of the Central Tibetan Administration (གྲོས་ཚོགས་ཐོག་གསུང་བཤད།) | Parliament of the Central Tibetan Administration (གྲོས་ཚོགས་ཐོག་གསུང་བཤད།) | Unicameral | 5 | First-past-the-post voting | 43 | 73,953 |
| Transnistria | Supreme Council (Верховный Совет, Verkhovny Sovet) | Supreme Council (Верховный Совет, Verkhovny Sovet) | Unicameral | 5 | | 33 | |