The Orthodox Church of Poland is an important religious institution in the country.

The Orthodox Church of the Czech Lands and Slovakia is an autocephalous Eastern Orthodox Church.

The Constantinopolitan Orthodox Church is one of the oldest Christian denominations.

The Georgian Orthodox Church is one of the oldest Christian churches in the world.

The Jerusalemite Orthodox Church is a historic church located in the Old City of Jerusalem.

The Orthodox Church of Albania is an important religious institution in the country.

The Serbian Orthodox Church is one of the autocephalous Eastern Orthodox Christian churches.

The Romanian Orthodox Church is the largest autocephalous Eastern Orthodox church in the world.

The Bulgarian Orthodox Church is one of the oldest Eastern Orthodox churches in the world.

The Syriac Orthodox Church is one of the oldest Christian churches in the world.