Turkey is a secular state in accordance with Article 24 of its constitution. Secularism in Turkey derives from Mustafa Kemal Atatürk's Six Arrows: republicanism, populism, laïcité, reformism, nationalism and statism. The Turkish government imposes some restrictions on Muslims and other religious groups, as well as Muslim religious expression in government offices and state-run institutions, including universities.

In 2023, the country was scored two out of 4 for religious freedom; land disputes for religious buildings are a large source of tension.

Freedom of religion in Turkey

Religious demography

According to the Turkish government, 99% of the population is Muslim (predominantly Sunni). The World Factbook lists 99.8 percent of Turkey's population as Muslim. The government recognizes three minority religious communities: Greek Orthodox Christians, Armenian Apostolic Christians and Jews (although other non-Muslim communities exist). The 2006 report of the U.S. Department of State enumerated the following religious minorities in Turkey:

Freedom of religion in Turkey

These figures were largely repeated in the 2009 U.S. Department of State report with a difference of up to 3,000 Greek Orthodox Christians with an additional 3,000 Chaldean Christians. The number of Syriac Christians and Yazidis in the southeast was once high; however, due to government pressure and the war with the Kurdistan Workers' Party (PKK), many Syriac Christians migrated to Istanbul, Western Europe and North and South America in the early 2000's. According to Turkish sociologist Ahmet Taşğın, Yazidis in Turkey numbered 22,632 in 1985; by 2000, the population had dropped to 423. Taşğın said that 23,546 Syriac Christians lived in Turkey in 1985 and 2,010 in 2001.

Freedom of religion in Turkey

As a signatory of the 1923 Treaty of Lausanne, Turkey recognizes the civil, political and cultural rights of non-Muslim minorities. In practice, the country recognizes Greek, Armenian and Jewish religious minorities but does not grant them all the rights stipulated in the treaty. Alevi-Bektashi and Câferî Muslims Latin Catholics, and Protestants are not officially recognized.

Status of religious freedom

Legal and policy frameworks

The 1928 constitution established the country as a secular state and provides for freedom of belief and worship and the private dissemination of religious ideas. However, other constitutional provisions for the integrity of the secular state restrict these rights. The constitution prohibits discrimination on religious grounds.

The two main Islamic streams in Turkey are Sunni and Alevi. Alevi are the minority in Turkey, estimated at 17 percent of the Muslim population. During the late 1970s, violent clashes occurred due to conflict between these two Islamic branches. In December 1978 militants in Kahramanmaraş agitated the Sunni population against the Alevi inhabitants of the town, and more than 100 people were killed. On 2 July 1993, Alevi intellectuals were attacked in Sivas; the Sivas massacre resulted in the deaths of 37 people.

Religious education is compulsory at the primary and secondary levels, according to Article 24 of the constitution, and Sunni theology predominates. A number of Alevis alleged discrimination in the government's failure to include their doctrines and beliefs in religious courses. In October 2007, the European Court of Human Rights (ECHR) ruled in favor of an Alevi parent who filed suit in 2004 claiming that the mandatory religious courses violated religious freedom. The government then added a 10-page overview of Aleviism to the textbook for the final year of religious instruction.

In December 2008, the Minister of Culture participated in the opening of the first Alevi Institute and apologised to the Alevis for past sufferings caused by the state. In January 2009, the Prime Minister attended an Alevi fast-breaking ceremony for the second consecutive year. The government held workshops aimed at openly discussing Alevi problems and expectations.