The Melkite Greek Catholic Church, or Melkite Byzantine Catholic Church, is an Eastern Catholic church in full communion with the Holy See as part of the worldwide Catholic Church. Its chief pastor is Patriarch Youssef Absi, headquartered at the Cathedral of Our Lady of the Dormition in Damascus, Syria. The Melkites, who are Byzantine Rite Catholics, trace their history to the early Christians of Antioch, formerly part of Syria and now in Turkey, of the 1st century AD, where Christianity was introduced by Saint Peter.

The Eastern Catholic Churches or Oriental Catholic Churches, also called the Eastern-Rite Catholic Churches, Eastern Rite Catholicism, or simply the Eastern Churches, are 23 Eastern Christian autonomous particular churches of the Catholic Church, in full communion with the Pope in Rome. Although they are distinct theologically, liturgically, and historically from the Latin Church, they are all in full communion with it and with each other. Eastern Catholics are a distinct minority within the Catholic Church; of the 1.3 billion Catholics in communion with the Pope, approximately 18 million are members of the eastern churches.