Elections to the 9th All-Russian Congress of Soviets were held in the Russian Soviet Federative Socialist Republic in the spring of 1921 (not to be confused with the 10th Congress of the Russian Communist Party (Bolsheviks)). They were the second elections in the history of the Soviet government, with the first such election in 1919, also to the All-Russian Congress of Soviets, not including one to the Petrograd Soviet in 1917, before the last stage of the Russian Revolution. There was some tension that year because of the revolt of sailors in the Kronstadt rebellion, actions of the Workers Opposition and monarchists, recent failure of a "communist uprising" in Germany (so called March Action), all while the fierce Russian Civil War continued unabated.