The 23rd Congress of the Communist Party of the Soviet Union (CPSU) took place in Moscow, RSFSR between 29 March and 8 April 1966. It was the first Congress during Leonid Brezhnev's leadership of the Party and state. The position of First Secretary (held by Brezhnev) was renamed back to General Secretary, which had been its name from 1922 to 1952.
Leonid Brezhnev, Gennady Voronov, Andrei Kirilenko, Alexei Kosygin, Kirill Mazurov, Arvid Pelshe, Nikolai Podgorny, Dmitry Polyansky, Mikhail Suslov, Alexander Shelepin and Petro Shelest were elected full members of the Politburo, while Viktor Grishin, Pyotr Demichev, Dinmukhamed Konayev, Pyotr Masherov, Vasil Mzhavanadze, Sharof Rashidov, Dmitriy Ustinov and Volodymyr Shcherbytsky were elected candidate members.
See also