Lenin died in 1922...
1922-1937: Alexey Rykov (Bolshevik Party)
1937-1941: Joseph Stalin (Soviet Reform Party)
1941-1952: Sergey Kirov (Bolshevik Party) [1]
1952-1962: Georgy Malenkov (Bolshevik Party)
1962-1977: Nikita Khrushchev (Soviet Reform Party)
1977-????: Mikhail Gorbachev (Soviet Democratic Party)
[1] Stalin overthrown by the Red Army.