The major religion is
Islam which is practiced by about 95% of Iraqis. The other 5% are
Judaism,
Christian, and other religions.
Religions
Islam
Iraq's Muslims follow two distinct traditions,
Shia and
Sunni Islam. According to the
CIA World Factbook, Iraq is 97% Muslim (Shi'a 60%-65%, Sunni 32%-37%).
Christianity
Iraq's Assyrian minority, who are Christian, represent 3% of the population.
Yazdânism
The
Yazidi live near
Mosul and are primarily made up of ethnic
Kurds.
Yazdânism dates to pre-Islamic times and Mosul is the principal holy site of the Yazidi faith. The holiest Yazidi shrine is that of
Sheikh Adi located at the
necropolis of
Lalish. Aside from the Yazidi religion, there are also the religions of the
Yarsani,
Alevi and the non-Yazdanist
Kakai 'davidism' among the Iraqi Kurds.
Mandaeism
The
Mandaean faith has existed in Iraq since the reign of
Artabanus V according to the Haran Gawaitha (secret wanderings) scroll of secondary Mandaean writ. This would make the Iraqi presence of Mandaeans at least 1,800 years old, making it the third oldest continually professed faith in Iraqi society after Zoroastrianism and Judaism. There are more Mandaeans in Iraq than there are Zoroastrians or Jews combined. In Iraq estimates of around 60,000 have been made, making the country second only to Iran in population numbers. The oldest independent confirmation of Mandaean existence in the region is the
Kartir inscription. The Mandaean faith is commonly known as the last surviving Gnostic faith and its adherents believe it to be the oldest faith on Earth, with at least some scholarly support for it being as old if not older then Christianity perhaps even being a major influence in the development of heterodox Jewish circles which eventually led to the formation of Christian beliefs, practices, rituals and theology.
John the Baptist or Yahia Yuhanna is considered to have been the final Mandaean prophet and first true Ris'Amma, or Ethnarch, of the Mandaean people. Most Iraqi Mandaeans live near waterways because of the practice of total immersion (or baptism) in flowing water every Sunday. The highest concentrations are in the Mesene province with headquarters in Amarah, Qalat Saleh and Basra. Besides these southern regions bordering Kuzistan in Iran, large numbers of Mandaeans can be found in Baghdad in Dweller's Quarters of that city giving them easy access to the Tigris River.
Judaism
Judaism first came to
Iraq under the rule of the
Babylonian king Nebuchadnezzar II of Babylon. It was a part of the
Babylonian Captivity. The once thriving Jewish community has survived through a series of
Zionist bombings and local persecution.

The majority have fled, largely to
Israel. Fewer than 100 Jews remain in Iraq.
Zoroastrianism
Zoroastrianism first came to
Iraq when
Babylon was conquered by the
Persian Empire. Zoroastrianism in Iraq declined after the fall of the
Sassanid Empire and very few, if any, Zoroastrians remain.
Shabaks
Some members of the Shabak people practice a badly known syncretic religion.
Religious conflict
Conflict between Shi'a and Sunni Muslims in Iraq has turned into riots,
tit-for-tat bombings, and violence throughout Iraq.
References
See also