Society : Religion_and_Spirituality : Christianity : Denominations : O :

O (692)

Old Baptist Union@ (1)

Old Catholic Church of North America@ (3)

Old Catholic Church of the Netherlands@ (2)

Old Catholic Church of the United States@ (3)

Old Catholic@ (69)

One Holy Catholic and Apostolic Roman Church@ (3)

Open Bible Standard Churches@ (10)

Orthodox Christian Reformed Church@ (2)

Orthodox Church in America@ (32)

Orthodox Presbyterian Church@ (100)

Orthodox@ (692)