Conference of the Oriental Orthodox Churches (COOC) also known as the Addis Ababa Conference was a historic event held in 1965 which brought together the Primates of five ancient Oriental Orthodox Churches. The participating Churches where Coptic, Syriac, Armenian, Ethiopian and the Indian Orthodox Church. The Primates were Pope Cyril VI of Alexandria, Patriarch Mor Ignatius Ya`qub III of Antioch and All East, Catholicos-Patriarch Vazgen I of All Armenia, Catholicos Khoren I of the Greater House of Cilicia and Catholicos of the East andMalankara Metropolitan Augen I of India.
Fr Dr. V C Samuel of India who was the Dean of the Theological College of the Holy Trinity as well as the Secretary of the Faculty Council of the Addis Ababa University was a key personality behind the success of the conference.
He played an important role in organizing the Conference with the initiative of Emperor Haile Selassie I and the acting Patriarch of Ethiopia, Abune Theophilus (later Patriarch). The year 2015 marked the fiftieth anniversary of the great and holy Conference of Addis Ababa.