The Chaldean Catholic Church descends from the ancient Church of the East in Mesopotamia and entered into full communion with Rome in the sixteenth century. It follows the East Syriac liturgical tradition centered on the Holy Qurbana of the Apostles Addai and Mari.

The Chaldean Rite is part of the East Syriac liturgical family, historically centered in Iraq and the surrounding region.

Chaldean Rite, one of the liturgical traditions of the Catholic Church.