Sovereign states by year: List of sovereign states in 1926 – Events of 1927 – List of sovereign states in 1928

Sovereign States

A

•  Afghanistan – Kingdom of Afghanistan
• Albania – Albanian Republic
•  Andorra – Principality of Andorra
•  Argentina – Argentine Republic
•  Australia – Commonwealth of Australia
• Austria – Republic of Austria

B

•  Belgium – Kingdom of Belgium
•  Bolivia – Republic of Bolivia
•  Brazil – Republic of the United States of Brazil
• Bulgaria – Kingdom of Bulgaria

C

•  Canada – Dominion of Canada
•  Chile – Republic of Chile
•  China – Republic of China
•  Colombia – Republic of Colombia
•  Costa Rica – Republic of Costa Rica
•  Cuba – Republic of Cuba
• Czechoslovakia – Czechoslovak Republic

D

•  Danzig – Free City of Danzig
•  Denmark – Kingdom of Denmark
•  Dominican Republic – Dominican Republic

E

•  Ecuador – Republic of Ecuador
• Egypt – Kingdom of Egypt
•  El Salvador – Republic of El Salvador
•  Estonia – Republic of Estonia
• Ethiopia – Empire of Ethiopia

F

•  Finland – Republic of Finland
• France – French Republic

G

•  Germany – German Reich
• Greece – Hellenic Republic
•  Guatemala – Republic of Guatemala

H

•  Haiti – Republic of Haiti
• Hejaz and Nejd (Personal Union)
  • Asir – Emirate of Asir
  • Hejaz – Kingdom of Hejaz
  • Nejd
    • Sultanate of Nejd (to January 29)
    • Kingdom of Nejd (from January 29)
•  Honduras – Republic of Honduras
• Hungary – Kingdom of Hungary

I

• Iceland – Kingdom of Iceland
• Ireland – Irish Free State
• Italy – Kingdom of Italy

J

•  Japan – Empire of Japan

L

•  Latvia – Republic of Latvia
•  Liberia – Republic of Liberia
•  Liechtenstein – Principality of Liechtenstein
•  Lithuania – Republic of Lithuania
•  Luxembourg – Grand Duchy of Luxembourg

M

•  Mexico – United Mexican States
•  Monaco – Principality of Monaco
• Mongolia – People's Republic of Mongolia

N

• Nepal – Kingdom of Nepal
•  Netherlands – Kingdom of The Netherlands
• New Zealand – Dominion of New Zealand
•  Newfoundland – Dominion of Newfoundland
•  Nicaragua – Republic of Nicaragua
•  Norway – Kingdom of Norway

P

•  Panama – Republic of Panama
• Paraguay – Republic of Paraguay
• Persia – Imperial State of Persia
•  Peru – Peruvian Republic
• Poland – Republic of Poland
•  Portugal – Portuguese Republic

R

• Romania – Kingdom of Romania

S

•  San Marino – Most Serene Republic of San Marino
•  Serbs, Croats and Slovenes – Kingdom of Serbs, Croats, and Slovenes
•  Siam – Kingdom of Siam
• South Africa – Union of South Africa
•  Soviet Union – Union of Soviet Socialist Republics
• Spain – Kingdom of Spain
•  Sweden – Kingdom of Sweden
•  Switzerland – Swiss Confederation

T

•  Turkey – Republic of Turkey

U

•  United Kingdom – United Kingdom of Great Britain and Ireland (to April 12)
  • United Kingdom of Great Britain and Northern Ireland (from April 12)
•  United States – United States of America
•  Uruguay – Eastern Republic of Uruguay

V

•  Venezuela – United States of Venezuela

Y

• Yemen – Mutawakkilite Kingdom of Yemen

States Claiming Sovereignty

• Ararat – Republic of Ararat (from October)
• Lado – Lado District
•  Tannu Tuva – Tuvan People's Republic
• Tavolara – Kingdom of Tavolara
•  Tibet – Tibet