List of sovereign states in 1820

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Sovereign states

A

•  Andorra – Principality of Andorra
• Anhalt-Bernburg – Duchy of Anhalt-Bernburg
• Anhalt-Dessau – Duchy of Anhalt-Dessau
• Anhalt-Köthen – Duchy of Anhalt-Köthen
• Ankole – Kingdom of Ankole
• Annam – Empire of Annam
•  Anziku – Anziku Kingdom
• Argentina - United Provinces of the Río de la Plata
• Aro – Aro Confederacy
•  Ashanti – Asante Union
•  Austria – Austrian Empire

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
•  Bornu – Bornu Empire
•  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
•  Chile - State of Chile
•  China – Great Qing Empire
• Cospaia – Republic of Cospaia

D

•  Dahomey – Kingdom of Dahomey
•  Denmark – Kingdom of Denmark
• Durrani – Durrani Empire

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

•  Garo – Kingdom of Garo
•  Gomma - Kingdom of Gomma
• Gran Colombia – Republic of Colombia
•  Gumma – Kingdom of Gumma

H

• Haiti – Kingdom of Haiti (to October 8)
•  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

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 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

•  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
•  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 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
• Portugal, Brazil and the Algarves – United Kingdom of Portugal, Brazil and the Algarves
•  Prussia – Kingdom of Prussia
• Punjab - Sikh Empire

R

•  Rapa Nui – Kingdom of Rapa Nui
• Reuss Elder Line – Principality of Reuss Elder Line
• 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-Coburg-Saalfeld – Duchy of Saxe-Coburg-Saalfeld
• Saxe-Gotha-Altenburg – Duchy of Saxe-Gotha-Altenburg
•  Saxe-Hildburghausen – Duchy of Saxe-Hildburghausen
• 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
• 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
• United States of the Ionian Islands – United States of the Ionian Islands

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

•  Goust – Republic of Goust
• Muskogee – State of Muskogee
• Soran – Soran Emirate