Christianity is the second largest religion in Egypt. The history of Egyptian Christianity dates to the Roman era as Alexandria was an early center of Christianity.
The vast majority of Egyptian Christians are Copts who belong to the Coptic Orthodox Church of Alexandria, an Oriental Orthodox Church. As of 2019, Copts in Egypt "are generally understood to make up approximately 10 percent" of the nation's population, with an estimated population of 9.5 million (figure cited in the Wall Street Journal, 2017) or 10 million (figure cited in the Associated Press, 2019). Smaller or larger figures have also been cited, in the range of "somewhere between 6% and 18% of the population," with the Egyptian government estimating lower numbers and the Coptic Orthodox Church estimating much higher numbers. A lack of definite, reliable demographic data renders all estimates uncertain. Outside of Egypt, there are roughly 1 million members of the Coptic Orthodox abroad. In 2018, approximately 90% of Egyptian Christians were Coptic Orthodox. The Coptic Orthodox Church of Alexandria is headed by the Pope of Alexandria and Patriarch of All Africa on the Holy See of Saint Mark, currently Pope Tawadros II.
Other than the Coptic Orthodox Church, two other Oriental Orthodox churches have members in Egypt: the Armenian Apostolic and Syriac Orthodox churches.
A minority of Egyptian Christians belong to the Coptic Catholic Church. Approximately 2.5% of Egyptian Christians belong to the Coptic Catholic Church. In 2007, the Annuario Pontificio estimated the total membership of the Coptic Catholic Church to be 161,327, divided into nine eparchies, with nine bishops and 164 parishes. Other particular churches of the worldwide Catholic Church with members in Egypt include the Melkites, Maronites, Syriac Catholics, Armenian Catholics, and Chaldean Catholics. Most Latin rite Catholics in Egypt are expatriates.
The Greek Orthodox Patriarchate of Alexandria and all Africa is the presence of Eastern Orthodoxy in Egypt.