List of Catholicoi (a title of heads of many Eastern churches - singular Catholicos): * List of Catholicoi of Armenia * List of Armenian Catholicoi of Cilicia * List of Armenian Catholic Catholicos-Patriarchs of Cilicia * List of Catholicoi and Patriarchs of Babylon for the Chaldeans * List of Catholicoi of Seleucia-Ctesiphon and Patriarchs of the East * List of Catholicos of the East * List of Catholicoi-Patriarchs of All Georgia * List of Caucasian Albanian Catholicoi