The Economic Cooperation Organization Secretariat is located in the Kamranieh neighborhood of Tehran, the capital city of Iran.^[1]

The headquarters coordinates and monitors the implementation of activities, prepares for and services meetings, and serves as a channel of communication between the Association and its Member States and other regional organizations. The ECO Secretariat comprises six directorates under the supervision of the Secretary-General and deputies. Two specialized agencies and six regional institutes are acting under the supervision of the General Secretariat.