Church of the East, also called Nestorian Church, an Eastern Christian denomination formerly spread across Asia, separated since the schism of 1552.
Church of the East may also refer to:
- Church of Assyria and Mosul, a patriarchate with historical background in the Church of the East in full communion with the Catholic Church 1553-1692
- Assyrian Church of the East, a patriarchate that declared independence in 1692 from the Church of Assyria and Mosul
- Chaldean Catholic Church, a patriarchate tracing its heritage to the Church of the East that entered into full communion with the Catholic Church as an Eastern Catholic particular church sui iuris in 1830