World Religions › Modern › Secularization
Soviet state atheism
1917–1991; also China and North Korea· Belief or practice· New movements & secular thought
Historical recordConfirmed by archaeology, outside sources or contemporary records.
The Soviet Union's official policy, from 1917 to 1991, of promoting atheism and restricting or destroying organized religion.
See it on the World Religions map →What it is
The Bolsheviks separated church and state in 1918, seized church property and later banned religious teaching for children. The League of the Militant Godless (1925–1947) ran mass propaganda. In Stalin's terror of 1937–38 tens of thousands of clergy were shot; estimates vary. Most churches, mosques, synagogues and Buddhist temples were closed. Stalin eased pressure in 1943 to rally wartime unity; Khrushchev renewed it in 1959–64. Similar policies followed in Mongolia, Albania (declared atheist in 1967), China's Cultural Revolution and North Korea.
Why it matters
It was one of history's largest attempts to end religion by state power. It failed: faith revived openly after 1991, though regular worship in Russia remains rare.
Sources and history
Soviet laws and party decrees; archives opened after 1991; propaganda magazines such as 'Bezbozhnik' (The Godless); church databases of martyrs; and samizdat reports smuggled out by believers.
Questions and debates
How many believers died is uncertain, and historians debate how much faith survived underground versus how much genuine unbelief the Soviets instilled.
Connections (4)
▸Soviet state atheism persecuted Eastern Orthodox ChurchHistorical record
The connection
The Russian Orthodox Church, the old state church, was the main target. Its property was seized in 1918, Patriarch Tikhon was arrested in 1922, and great churches were demolished, like Moscow's Cathedral of Christ the Saviour in 1931. By 1939 only a few hundred of tens of thousands of prewar churches still functioned, by most estimates.
When and where
Across the USSR, with peaks in 1922, 1929–1939 and 1959–1964; Lenin, Stalin and Khrushchev; Stalin allowed a controlled revival from 1943.
Historical evidence
Soviet archives opened after 1991, Church lists of 'new martyrs', and the rebuilt Cathedral of Christ the Saviour, completed in 2000.
Questions and debates
Clergy death tolls are uncertain, and the Church's past cooperation with the KGB and its close ties to today's Kremlin remain contested.
▸Soviet state atheism suppressed Religious freedom and church–state separationHistorical record
The connection
Soviet constitutions promised freedom of worship but, from 1929, also 'freedom of anti-religious propaganda'. The 1929 law on religious associations banned religious teaching, charity and evangelism. Believers lost jobs, went to prison or were sent to psychiatric hospitals. A 1990 law on freedom of conscience finally reversed these limits.
When and where
USSR, 1929 law and constitutional amendment; the 1975 Helsinki Final Act made religious liberty a Cold War issue; Gorbachev's 1990 law.
Historical evidence
Texts of Soviet laws, samizdat journals such as 'A Chronicle of Current Events', and records gathered by the Keston Institute from 1969.
Questions and debates
Russia's 1997 law favoring 'traditional' religions and its 2017 ban on Jehovah's Witnesses fuel debate over whether religious freedom took root.
▸Marx: religion as 'the opium of the people' inspired Soviet state atheismHistorical record
The connection
Marx called religion the 'opium of the people' and expected it to fade once class oppression ended. Lenin went further, calling religion 'spiritual booze' in 1905 and making atheism party doctrine. The Soviets used schools, propaganda and force to speed religion's end rather than wait for it.
When and where
Marx, 1843–44; Lenin's 'Socialism and Religion' (1905); the 1918 decree separating church and state; the League of the Militant Godless, 1925.
Historical evidence
Lenin's writings, the 1919 party program, Militant Godless publications, and party archives.
Questions and debates
Scholars debate how much Soviet violence flowed from Marx's ideas versus Lenin's and Stalin's choices; Marx himself never called for banning religion.
▸Pope John Paul II helped end Soviet state atheismMostly agreed by scholars
The connection
The Polish pope's 1979 visit to communist Poland drew huge crowds and emboldened people. In August 1980 the Solidarity trade union formed, and he backed it through martial law. Poland's partly free elections of 1989 helped topple communist rule across Eastern Europe, and the USSR's state atheism ended with the Soviet collapse in 1991.
When and where
Poland, June 2–10, 1979; Solidarity, August 1980; Gorbachev's visit to the Vatican, December 1, 1989.
How do we know?
Gorbachev wrote in 1992 that the changes would have been impossible without this pope; Soviet-bloc secret-police files show the regimes feared him.
Questions and debates
Historians weigh his role against economic failure, Gorbachev's reforms, Reagan's pressure and Polish workers; how decisive he was is debated.