Lithuanian Soviet Socialist Republic (1918–1919)

Lithuanian Soviet Socialist Republic
  • Lietuvos Tarybų Socialistinė Respublika (Lithuanian)
  • Литовская Советская Социалистическая Республика (Russian)
1918–1919
Emblem
Map of the Lithuanian Soviet Socialist Republic in 1919, with uncontrolled territory shown in light green.
StatusPuppet state
CapitalVilnius
Common languagesLithuanian · Russian
Belarusian · Polish
Yiddish
GovernmentSoviet republic
Chairman 
LegislatureProvisional revolutionary government (Lithuania)
Historical eraWorld War I
• Provisional revolutionary government formed
8 December 1918
• Republic established
16 December 1918
• Recognised by Soviet Russia
22 December 1918
• Capture of Vilnius
5 January 1919
• Merged with SSR Byelorussia
27 February 1919
Preceded by
Succeeded by
Lithuania
Lithuanian–Byelorussian Soviet Socialist Republic

The Lithuanian Soviet Socialist Republic (LSSR) was a short-lived Soviet puppet state during the early interwar period. It was declared on 16 December 1918 by a provisional revolutionary government led by Vincas Mickevičius-Kapsukas. It ceased to exist on 27 February 1919, when it was merged with the Socialist Soviet Republic of Byelorussia to form the Lithuanian–Byelorussian Soviet Socialist Republic (Litbel) that itself lost control over all of its claimed territories by August 1919.