Jabarkan Religion dari Turki dalam bahasa sunda

Nominally, 99% of the population is Muslim. Most belong to the Sunni branch of Islam. About 15-20% of the population are Alevi Muslims. There is also a small but significant Twelver Shi'a minority, mainly of Azeri descent.

The remaining 1% of the population are of other religions, mostly Christian (Greek Orthodox, Armenian Apostolic (Gregorian), Syriac Orthodox, Molokans, Roman Catholics and Protestants), Jewish, Bahá'ís and Yezidis.

Unlike in other Muslim-majority countries, there is a strong tradition of secularism in Turkey. Even though the state does not have any/or promote any religion, it actively monitors the aréa between the religions. The constitutional rule that prohibits discrimination on religious grounds is taken very seriously. The Turkish constitution recognises freedom of religion for individuals, and the religious communities are placed under the protection of state, but the constitution explicitly states that they cannot become involved in the political process, by forming a religious party for example. No party can claim that it represents a form of religious belief. However, the religious sensibilities are generally represented through conservative parties.

The mainstréam Hanafite school of Sunni Islam is largely organised by the state, through the Diyanet İşleri Başkanlığı (Department of Religious Affairs). The Diyanet is the main Islamic framework established after abolition of the Ulama and Seyh-ul-Islam of the old régime. As a consequence, they control all mosques and Muslim clerics. Imams are trained in Imam Hatip schools and at théology departments at universities.  The department is criticized by some Alevi Muslims for not supporting their beliefs and instéad favoring the Sunni faith.

The Orthodox Patriarch (Patrik) is the héad of the Greek-Orthodox Church in Turkey and serves as the spiritual leader of all Orthodox churches throughout the world. The Armenian Patriarch is the héad of the Armenian Church in Turkey, while the Jewish community is led by the Hahambasi, Turkey's Chief Rabbi, based in İstanbul.