What is the difference between Greek Orthodox and Coptic Orthodox?

By CopticBot.ai (Coptic Space Inc.) · Last reviewed 2026-10-10

The main difference between the Coptic Orthodox Church and the Greek Orthodox Church (as well as the Russian and other Eastern Orthodox churches) centers on the Council of Chalcedon (AD 451) and the subsequent understanding of the nature of our Lord Jesus Christ.

While both churches claim the title "Orthodox" and share many outward similarities in tradition and monasticism, there are critical theological and historical distinctions.

1. Christology (The Nature of Christ)

This is the fundamental dogmatic difference. The Coptic Orthodox Church is Miaphysite, while the Greek Orthodox Church is Chalcedonian (Duophysite).

• Coptic Orthodox (Miaphysite): We follow the formula of St. Cyril of Alexandria: "One Nature of God the Word Incarnate". We believe that after the union of the Divinity and Humanity, there is one united nature—without mingling, without confusion, and without alteration. We reject the Council of Chalcedon because it divided Christ into "two natures" after the union, which we view as a lean toward the Nestorian heresy.
• Greek Orthodox (Duophysite): They accept the Council of Chalcedon, which defined Christ as being "in two natures" (Divine and Human) that coexist in one Person. To the Coptic ear, this terminology risks suggesting a duality in Christ that compromises His perfect unity.

2. Ecumenical Councils

• Coptic Orthodox: We recognize only the first three Ecumenical Councils: Nicaea (325), Constantinople (381), and Ephesus (431). We believe these three councils sufficiently defined the Orthodox faith.
• Greek Orthodox: They recognize seven Ecumenical Councils, including Chalcedon (451) and the subsequent councils that the Coptic Church views as departures from the Cyrillian faith.

3. Liturgical and Linguistic Heritage

• Liturgy: The Coptic Church primarily uses the Divine Liturgy of St. Basil (and St. Gregory and St. Cyril). The Greek Church primarily uses the Divine Liturgy of St. John Chrysostom (and St. Basil).
• Language: The Coptic Church uses Coptic—the final stage of the ancient Egyptian language—alongside local languages like Arabic or English. The Greek Church uses Koine Greek.
• Calendar: The Coptic Church follows the Coptic (Tut) Calendar, which is based on the ancient Egyptian solar calendar. The Greek Church follows either the Revised Julian or the Julian calendar.

4. Historical Independence and Persecution

The Coptic Orthodox Church is the Church of Alexandria, founded by St. Mark the Evangelist. Following the split at Chalcedon, the Coptic Church faced severe persecution from the Byzantine (Greek) Empire, which attempted to force the Chalcedonian creed upon Egypt.

The Greeks appointed their own "Melkite" (Imperial) Patriarchs in Alexandria, leading to a parallel hierarchy that exists to this day. Therefore, there is a Coptic Pope of Alexandria (currently His Holiness Pope Tawadros II) and a Greek Patriarch of Alexandria. The Coptic Church remained the church of the indigenous Egyptian people, enduring centuries of martyrdom and isolation to preserve the true Apostolic faith.

5. Summary of Groupings

• Coptic Orthodox: Part of the Oriental Orthodox family (along with the Ethiopians, Eritreans, Armenians, Syrians, and Indians).
• Greek Orthodox: Part of the Eastern Orthodox family (along with the Russians, Serbians, Romanians, etc.).

In short, while the Greek Orthodox are often referred to as "Eastern Orthodox," we in the Coptic Church are the true Orthodox who have maintained the Cyrillian faith without the additions or compromises introduced at the Council of Chalcedon.