The Central Bureau of the Lithuanian Sections of the Russian Communist Party (Bolsheviks) (Lithuanian: RKP(b) Lietuvių sekcijų Centro Biuras) was an organization within the Russian Communist Party (Bolsheviks) that coordinated groups of Lithuanian party members across Soviet Russia in 1917–1921. The Central Bureau played a key role in the formation of the communist movement in Lithuania in the lead-up to the establishment of the first Lithuanian Soviet Republic in 1918, as there was no communist movement there at the time of the October Revolution. The main leaders of the Central Bureau of the Lithuanian Sections were Vincas Mickevičius-Kapsukas and Zigmas Aleksa-Angarietis, the founding duo of Lithuanian Bolshevism. Five conferences of Lithuanian Bolsheviks in Soviet Russia were held betw
