List of leaders of the Soviet Union
An approximately chronological listing of Soviet leaders (heads of the Central Committee of the Communist Party and President of the Soviet Union). The formal head of the government was the Premier of the Soviet Union. This was the most important position in Lenin's time. After Lenin's death the most important position ultimately became the General Secretary of the Communist Party of the Soviet Union who headed the Politburo.

(*)The Union of Soviet Socialist Republics was only created in 1922. From 1918 to 1922 the state was known as the Russian Socialist Federated Soviet Republic (the RSFSR continued after 1922 as one of 15 republics in the USSR). From the Freburary Revolution in 1917 the state was the Russian Republic though it was often referred to as Soviet Russia after the October Revolution in 1917 when the Council of People's Commissars was formed.
The post of General Secretary was created in April 1922 but did not come to signify the party leader or leader of the country until after Stalin won the struggle with Trotsky to succeed Lenin. The title was First Secretary between 1952 and April 1966. The "Chairman of the Presidium of the Supreme Soviet" was the equivalent of President of the state while "Chairman of the Council of Ministers" and "Chairman of the Council of People's Commissars" were equivalent to Premier or Prime Minister.
On March 14 1990, the newly created (1989) Congress of People's Deputies voted to end the Communist party's control over the government and elected Gorbachev President of the Soviet Union.