Christianity in Russia

Christianity in Russia is the most widely professed religion in the country. The largest tradition is the Russian Orthodox Church. According to official sources, there are 170 eparchies of the Russian Orthodox Church, 145 of which are grouped in metropolitanates. There are from 500,000 to one million Old Believers, who represent an older form of Russian Orthodox Christianity, and who separated from the Orthodox Church in the 17th century as a protest against Patriarch Nikon's church reforms.

The Catholic Church estimates that there are from 600,000 to 1.5 million Catholics in the country, exceeding government estimates of about 140,000. There is one Catholic Archdiocese, Mother of God at Moscow, with three suffragan dioceses (Saint Clement at Saratov, Saint Joseph at Irkutsk, Transfiguration at Novosibirsk) and the Apostolic Prefecture of Yuzhno-Sakhalinsk. According to the Slavic Center for Law and Justice, Protestants make up the second or third largest group of Christians in Russia, with approximately 3,500 organizations and more than 1 million followers. A large number of missionaries operating in the country are from Protestant denominations.

Christianity was the religious self-identification of 47.1% of the Russian population in 2012. Other polls give different results: In the same year 2020 the Levada Center estimated that 63% of Russians were Christians; in 2020 the Public Opinion Foundation estimated that 63% of the population was Christian; in 2011 the Pew Research Center estimated that 71% of Russians were Christians; in 2011 Ipsos MORI estimated that 69% of Russians were Christians; and in 2021 the Russian Public Opinion Research Center (VCIOM) estimated that ~67% of Russians were Christians.

The Russian "law on non-governmental organizations" that took effect in April 2007 requires non-governmental organizations (NGOs), including Christian churches, to register with state agencies, list their funding sources, and provide records of all meetings. In June 2016, Russia passed an anti-terrorism law that bans proselytizing and missionary activities. On July 8, 2016, the U.S. Commission on International Religious Freedom (USCIRF) strongly condemned these measures stating, "Under the guise of confronting terrorism, they would grant authorities sweeping powers to curtail civil liberties, including setting broad restrictions on religious practices that would make it very difficult for religious groups to operate." An article in The Christian Post, discussing the ban on proselytizing stated, "Human rights and religious freedom advocates argue that the law 'doesn't do that much to defend from terrorism and only prevents Christians and others who are not Orthodox from preaching and proselytizing.'" In 2017, the USCIRF reclassified Russia as one of the world's worst violators of religious liberty, recommending that the US government deem Russia a "country of particular concern" under the International Religious Freedom Act. Since 2016, Russian Christians face increased restrictions on public and private evangelism as a result of the Yarovaya law.