The Dicastery for the Eastern Churches, previously named Congregation for the Oriental Churches or Congregation for the Eastern Churches, is a dicastery of the Roman Curia responsible for contact with the Eastern Catholic churches for the sake of assisting their development and protecting their rights. It also maintains whole and entire in the one Catholic Church the heritage and canon law of the various Eastern Catholic traditions. It has exclusive authority over the following regions: Egypt and the Sinai Peninsula, Eritrea and northern Ethiopia, southern Albania and Bulgaria, Cyprus, Greece, Iran, Iraq, Lebanon, Israel, Syria, Jordan and Turkey, and also oversees jurisdictions based in Romania, Southern Italy, Hungary, India and Ukraine.

The Roman Curia comprises the administrative institutions of the Holy See and the central body through which the affairs of the Roman Catholic Church are conducted. The Roman Curia is the institution which the Roman Pontiff ordinarily makes use of in the exercise of his supreme pastoral office and universal mission in the world. It is at the service of the Pope, successor of Peter, and of the Bishops, successors of the Apostles, according to the modalities that are proper to the nature of each one, fulfilling their function with an evangelical spirit, working for the good and at the service of communion, unity and edification of the Universal Church and attending to the demands of the world in which the Church is called to fulfill its mission.