Country of southwestern Asia in the region of the Tigris and Euphrates rivers, between Persia and northern Arabia, comprising the former Turkish vilayets of Baghdad, Basra, and Mosul. Christianity was probably introduced among the Mesopotamian Arabs toward the middle of the 2century, and flourished in spite of persecution by the Sassanian kings of Persia who subjugated the region. Thenceforth the history of Christianity in Iraq, including the adoption of Nestorianism, followed that of Persia, until Iraq was captured by the Turks in the 16th century, when most of the inhabitants became Mohammedan. The country was freed from Turkish dominion during the World War, and in 1928 was established as an independent state.

Archdioceses, past and present, include

Dioceses, past and present, include:

See also: