Chaldean Christians /kælˈdiːən/ (ܟܠܕܝ̈ܐ) are ethnic Assyrian adherents of the Chaldean Catholic Church (originally called The Church of Assyria and Mosul), that part of the Assyrian Church of the East which entered communion with the Catholic Church in the 17th century. In addition to their homeland, migrant Chaldean Catholic communities are found in the United States, Sweden, Germany, France, Canada and Australia.
Geographically and ethnically, the Chaldeans originate from central and southern Assyria, the Nineveh plains, where the ruins of the ancient Assyrian capitals of Nineveh, Ashur and Kalhu(Nimrud) are located.
Chaldean Christians should not be confused with the Saint Thomas Christians of India (also called the Chaldean Syrian Church), who are also sometimes known as "Chaldean Christians".
Read more about Chaldean Christians: Chaldean Catholics in The Middle East, Predominantly Assyrian Chaldean Catholic Towns in Iraq