Religion in Iraq
Islam is the official state religion in the Republic of Iraq, but the constitution guarantees freedom of religion. Iraq is a multi ethnic and multi religious country with Islam, Christianity, Yazdanism, Zoroastrianism, Shabakism, Judaism, Mandaeism, Bahā'i, Ahl-e Haqq-Yarsanis, Ishikism and numerous other religions all having a presence in the country. Shia Islam is the main religion in Iraq followed by 60–65% of the population, while Sunni Islam is followed by 32–37% of the people. Many cities throughout Iraq have been areas of historical prominence for both Shia and Sunni Muslims, including Najaf, Karbala, Baghdad and Samarra.
Iraqi Kurdistan
Iraqi Kurdistan has a religiously diverse population. The dominant religion is Islam, which is professed by the majority of Iraqi Kurdistan's inhabitants. These include Kurds, Iraqi Turkmen, and Arabs, belonging mostly to the Shafi'i school of Sunni Islam. There is also a small number of Shia Feyli Kurds, as well as adherents of Sufi Islam.