List of sovereign states in the 1820s
Sovereign states
A
Afghanistan – Emirate of Afghanistan (from 1823)
Capital: Kabul
Andorra – Principality of Andorra
Capital: Andorra la Vella
Anhalt-Bernburg – Duchy of Anhalt-Bernburg
Capital: Bernburg
Anhalt-Dessau – Duchy of Anhalt-Dessau
Capital: Dessau- Anhalt-Köthen – Duchy of Anhalt-Köthen
Capital: Köthen 
Ankole – Kingdom of Ankole
Capital: Mbarara- Annam – Empire of Annam
Capital: Huế - Anziku – Anziku Kingdom
Capital: Monsol 
Argentina - United Provinces of the River Plate
Capital: Buenos Aires
Aro – Aro Confederacy
Capital: Arochukwu
Ashanti – Asante Union
Capital: Kumasi
Austria – Austrian Empire
Capital: Vienna
B
Baden – Grand Duchy of Baden- Baguirmi – Kingdom of Baguirmi
- Bambara – Bambara Empire
- Baol – Kingdom of Baol
- Basutoland – Kingdom of Basutoland
Bavaria – Kingdom of Bavaria
Benin – Benin Empire
Bhutan – Kingdom of Bhutan
→ 
Bolivia – Bolivian Republic (from August 6, 1825)- Bornu – Bornu Empire
Brazil – Empire of Brazil (from September 7, 1822)
Bremen – Free City of Bremen
Brunei – Sultanate of Brunei
Brunswick – Duchy of Brunswick
Buganda – Kingdom of Buganda
Bukhara – Emirate of Bukhara
Bunyoro – Kingdom of Bunyoro-Kitara
Burma – Kingdom of Burma- Burundi – Kingdom of Burundi
C
Cambodia – Kingdom of Cambodia- Cayor – Kingdom of Cayor
→ 
Central America
- United Provinces of Central America (from July 1, 1823 to 1824)
- Federal Republic of Central America (from 1824)
Chile
- State of Chile (to July 14, 1826)
- Republic of Chile (from July 14, 1826)
- China – Great Qing Empire
→ 
→ 
Colombia – Republic of Colombia
Cospaia – Republic of Cospaia
D
Dahomey – Kingdom of Dahomey
Denmark – Kingdom of Denmark
Durrani – Durrani Empire (to 1823)
E
Ethiopia – Ethiopian Empire
F
Fiji – Tui Viti
→ 
France – Kingdom of France
Frankfurt – Free City of Frankfurt- Futa Jallon – Imamate of Futa Jallon
- Futa Toro – Imamate of Futa Toro
G
H
→ 
Haiti
- Kingdom of Haiti (to October 8, 1820)
- Republic of Haiti (from October 8, 1820)
Hamburg – Free City of Hamburg
Hanover – Kingdom of Hanover
Hawaii – Kingdom of Hawaii
Hesse-Darmstadt – Grand Duchy of Hesse and by Rhine
Hesse-Homburg – Landgraviate of Hesse-Homburg
Hesse-Kassel (or Hesse-Cassel) – Electorate of Hesse
Hohenzollern-Hechingen – Principality of Hohenzollern-Hechingen- Hohenzollern-Sigmaringen – Principality of Hohenzollern-Sigmaringen
- Holstein – Duchy of Holstein
I
Ionian Islands – United States of the Ionian Islands
J
- Janjero – Kingdom of Janjero
Japan – Tokugawa shogunate- Jimma – Kingdom of Jimma
Johor – Johor Sultanate- Jolof – Jolof Kingdom
K
- Kaabu – Kingdom of Kaabu
- Kaffa – Kingdom of Kaffa
- Kénédougou – Kénédougou Kingdom
- Khasso – Kingdom of Khasso
Khiva – Khanate of Khiva
Kokand – Khanate of Kokand- Kong – Kong Empire
Kongo – Kingdom of Kongo
Korea – Kingdom of Great Joseon- Koya Temne – Kingdom of Koya
L
Liechtenstein – Principality of Liechtenstein- Limmu-Ennarea – Kingdom of Limmu-Ennarea
Lippe – Principality of Lippe-Detmoldt
Loango – Kingdom of Loango- Luba – Luba Empire
Lubeck – Free City of Lubeck- Lunda – Lunda Empire
Luxembourg – Grand Duchy of Luxembourg
M
Madawaska – Republic of Madawaska (July 4 1827- September 25 1827)- Maldives – Sultanate of Maldives
Manipur – Kingdom of Manipur
Massina – Massina Empire
Mecklenburg-Schwerin – Grand Duchy of Mecklenburg-Schwerin- Mecklenburg-Strelitz – Grand Duchy of Mecklenburg-Strelitz
Mexico (from July 21, 1821)
- Mexican Empire (from July 21, 1821 to March 19, 1823)
- Mexican Republic (from November 1, 1823)
Mindanao – Sultanate of Maguindanao
Modena – Duchies of Modena and Reggio
Moldavia – Principality of Moldavia
Monaco – Principality of Monaco
Montenegro – Prince-Bishopric of Montenegro
Morocco – Sultanate of Morocco
N
Nassau – Duchy of Nassau
Nepal – Kingdom of Nepal
Netherlands – United Kingdom of the Netherlands
Norway – Kingdom of Norway (in a personal union with Sweden)
O
Oldenburg – Grand Duchy of Oldenburg
Ottoman Empire – Sublime Ottoman State- Ouaddai – Ouaddai Empire
- Oyo – Oyo Empire
P
Pahang – Sultanate of Pahang
Papal States – States of the Church
→ 
Paraguay – Republic of Paraguay
Parma – Duchy of Parma, Piacenza and Guastalla
Perak – Sultanate of Perak
Persia – Persian Empire
→ 
→ 
Peru (from July 28, 1821)
- Supreme Governing Junta (from July 20, 1822 to February 1823)
- Peruvian Republic (from February 27, 1823)
Portugal – Kingdom of Portugal (from 1822)
Portugal, Brazil and the Algarves – United Kingdom of Portugal, Brazil and the Algarves (to 1822)
Prussia – Kingdom of Prussia
Punjab – Sikh Empire
R
- Rapa Nui – Kingdom of Rapa Nui
Reuss-Ebersdorf – Principality of Reuss-Ebersdorf (to 1824)
Reuss Elder Line – Principality of Reuss Elder Line
Reuss-Lobenstein – Principality of Reuss-Lobenstein (to 1824)- Reuss-Lobenstein-Ebersdorf – Principality of Reuss-Lobenstein-Ebersdorf (from 1824)
- Reuss Junior Line – Principality of Reuss Junior Line
Russia – Russian Empire- Rwanda – Kingdom of Rwanda
Ryūkyū Kingdom – Kingdom of Ryūkyū
S
- Samoa – Kingdom of Samoa
San Marino – Most Serene Republic of San Marino
Sardinia – Kingdom of Sardinia
Saxe-Altenburg – Duchy of Saxe-Altenburg (from 1826)
Saxe-Coburg-Saalfeld – Duchy of Saxe-Coburg-Saalfeld (to 1826)
Saxe-Coburg-Gotha – Duchy of Saxe-Coburg and Gotha (from 1826)
Saxe-Gotha-Altenburg – Duchy of Saxe-Gotha-Altenburg (to 1826)- Saxe-Hildburghausen – Duchy of Saxe-Hildburghausen (to 1826)
- Saxe-Meiningen – Duchy of Saxe-Meiningen
Saxe-Weimar-Eisenach – Grand Duchy of Saxe-Weimar-Eisenach
Saxony – Kingdom of Saxony- Schaumburg-Lippe – Principality of Schaumburg-Lippe
Schleswig – Duchy of Schleswig
Schwarzburg-Rudolstadt – Principality of Schwarzburg-Rudolstadt
Schwarzburg-Sondershausen – Principality of Schwarzburg-Sondershausen
Selangor – Sultanate of Selangor
Siam – Kingdom of Siam- Sikkim – Chogyalate of Sikkim
Sokoto – Sokoto Caliphate
Spain – Kingdom of Spain
Sulu – Sultanate of Sulu
Sweden – Kingdom of Sweden (in personal union with Norway)
Switzerland – Swiss Confederation
T
Tahiti – Kingdom of Tahiti
Tonga – Tu'i Tonga
Toro – Toro Kingdom (from 1822)
Tuscany – Grand Duchy of Tuscany
Two Sicilies – Kingdom of the Two Sicilies
U
United Kingdom – United Kingdom of Great Britain and Ireland
→ 
United States – United States of America
W
Waldeck-Pyrmont – Principality of Waldeck and Pyrmont- Welayta – Kingdom of Welayta
Württemberg – Kingdom of Württemberg
Z
- Zululand – Kingdom of the Zulus
States claiming sovereignty
- Equator – Confederation of the Equator (from 2 July 1823 to September or October 1823)
- Goust – Republic of Goust
Greece – Hellenic Republic (from January 1, 1822)
Muskogee – State of Muskogee
Soran – Soran Emirate
