9th Congress of the Russian Communist Party (Bolsheviks)
 The 9th Congress of the Russian Communist Party took place from 29 March 1920 till 5 April 1920. The Congress opened in the Bolshoi Theatre with an introductory speech by Vladimir Lenin. The following meetings of the Congress took place in one of the buildings of the Kremlin. Present at the Congress were 715 delegates, of whom 553 had the right to vote and 162 were delegates with voice but no vote.