Antoun (Khouri) of Miami and the Southeast was a diocesan bishop of the Antiochian Orthodox Christian Archdiocese of North America.

After completing his elementary education at the Orthodox School in Meedan, Syria, he entered the Minor Seminary at Balamand Monastery, near Tripoli, Lebanon, at the age of fourteen, where he met his lifelong friend, the future Metropolitan Philip Saliba.

In 1959 Antoun arrived in United States for graduate theological studies at St. Vladimir's Orthodox Theological Seminary near New York City, from which he graduated in 1962, having been ordained to the priesthood on May 29, 1960, by Metropolitan Antony Bashir, the Archbishop of New York and all North America.

The General Assembly of the Archdiocese of North America, consisting of clergy and lay delegates from parishes throughout the United States and Canada, nominated Archimandrite Antoun for the office of auxiliary bishop to the Metropolitan on August 1, 1981, and the Holy Synod of the Patriarchate of Antioch and All the East elected him to that office at a session in Damascus, Syria, on November 4, 1982, as titular bishop of Selefkia.

He was consecrated to the episcopacy on January 9, 1983, at St. Nicholas Cathedral in Brooklyn, New York, by Metropolitan Philip Saliba of North America; Archbishop Michael Shaheen of Toledo, the Auxiliary of the Archdiocese of North America; Archbishop Elias Saliba, the superior of the Patriarchal Monastery of St. George (Tel-Kalakh, Syria); Bishop Paul Bandaly, the Patriarchal Vicar (now Metropolitan of Akkar, Lebanon); and Bishop Antonio Chedraoui, the Patriarchal Legate for the Diocese of Mexico and Central America.