Religion in Iraq

Religion in Iraq dates back to Ancient Mesopotamia, particularly Sumer, Akkad, Assyria and Babylonia between circa 3500 BC and 400 AD, after which they largely gave way to Syriac Christianity and later to Islam.

A national census has not been held since 1987. In the 2020s, the country is overwhelmingly Muslim, who are split into two distinct sects, Shia and Sunni. Approximately 95% to 98% of the population are Muslims, with Shia Muslims constituting around 55%, and Sunnis around 40%. The remainder follow Christianity, Yazidism, Mandaeism and Yarsanism.