List of countries in the 1820s

Sovereign states
A
  – 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 River Plate 
 Aro – Aro Confederacy 
  – Asante Union 
  – Austrian Empire 

B
  Baden – Grand Duchy of Baden
 Baguirmi – Kingdom of Baguirmi
 Bambara – Bambara Empire
 Baol – Kingdom of Baol
 Basutoland – Kingdom of Basutoland
  – Kingdom of Bavaria
  – Benin Empire
  – Kingdom of Bhutan
  →  Bolivia – Bolivian Republic (from August 6, 1825)
 Bornu – Bornu Empire
  – Empire of Brazil 
  – Free City of Bremen
  Brunei – Sultanate of Brunei
  – 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 
 Federal Republic of Central America 

 State of Chile 
 Republic of Chile 
 China – Great Qing Empire
  →  →  Colombia – Republic of Colombia
  Cospaia – Republic of Cospaia

D
  Dahomey – Kingdom of Dahomey
  Denmark – Kingdom of Denmark
  Durrani – Durrani Empire 

E
  – 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
 Gumma – Kingdom of Gumma

H
  → 
 Kingdom of Haiti 
 Republic of Haiti (from October 8, 1820)
  – Free City of Hamburg
   – 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 Kingdom

K
 Kaabu – Kingdom of Kaabu
  Kabul – Emirate of Kabul 
 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
  – 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
  – Grand Duchy of Luxembourg

M
  Madawaska – Republic of Madawaska 
  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 
 Mexican Empire 
 Mexican Republic 
  Mindanao – Sultanate of Maguindanao
  Modena – Duchies of Modena and Reggio
  Moldavia – Principality of Moldavia
  – Principality of Monaco
  Montenegro – Prince-Bishopric of Montenegro
  – Sultanate of Morocco

N
  Nassau – Duchy of Nassau
  Nepal – Kingdom of Nepal
  – United Kingdom of the Netherlands
  Norway – Kingdom of Norway (in a personal union with Sweden)

O
  Oldenburg – Grand Duchy of Oldenburg
  – Sublime Ottoman State
 Ouaddai – Ouaddai Empire
 Oyo – Oyo Empire

P
  Pahang – Sultanate of Pahang
  – States of the Church
  →  – Republic of Paraguay
  – Duchy of Parma, Piacenza and Guastalla
  Perak – Sultanate of Perak
  Persia – Persian Empire
  →  →  Peru 
 Supreme Governing Junta 
 Peruvian Republic 
  Portugal – Kingdom of Portugal 
  Portugal, Brazil and the Algarves – United Kingdom of Portugal, Brazil and the Algarves 
  – Kingdom of Prussia
 25px Punjab – Sikh Empire

R
 Rapa Nui – Kingdom of Rapa Nui
  Reuss-Ebersdorf – Principality of Reuss-Ebersdorf 
  Reuss Elder Line – Principality of Reuss Elder Line
  Reuss-Lobenstein – Principality of Reuss-Lobenstein 
  Reuss-Lobenstein-Ebersdorf – Principality of Reuss-Lobenstein-Ebersdorf 
  Reuss Junior Line – Principality of Reuss Junior Line
  Russia – Russian Empire
 Rwanda – Kingdom of Rwanda
  – Kingdom of Ryūkyū

S
 Samoa – Kingdom of Samoa
  – Most Serene Republic of San Marino
  – Kingdom of Sardinia
  Saxe-Altenburg – Duchy of Saxe-Altenburg 
 Saxe-Coburg-Saalfeld – Duchy of Saxe-Coburg-Saalfeld 
  Saxe-Coburg-Gotha – Duchy of Saxe-Coburg and Gotha 
  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
  – 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 
  Tuscany – Grand Duchy of Tuscany
  – Kingdom of the Two Sicilies

U
  – United Kingdom of Great Britain and Ireland
  →  – United States of America

W
  Waldeck-Pyrmont – Principality of Waldeck and Pyrmont
 Welayta – Kingdom of Welayta
  – Kingdom of Württemberg

Z
 Zululand – Kingdom of the Zulus

States claiming sovereignty
 Equator – Confederation of the Equator 
 Goust – Republic of Goust
  Greece – Hellenic Republic 
  Muskogee – State of Muskogee
  Soran – Soran Emirate

Category:1820s
1820s