The Holy Orthodox Church in North America (HOCNA) is an Old Calendarist jurisdiction initially formed by former members of the Greek Orthodox Archdiocese of America who joined the Russian Orthodox Church Outside Russia in the 1960s in protest of the excessive ecumenical activities of Patriarch Athenagoras I (Spyrou) of Constantinople and Archbishop Iakovos (Coucouzis) of America. In 1987-1988, these communities left the ROCOR and following a brief period under two independent Old Calendarist bishops in Greece, were received by the Old Calendarist Synod of Archbishop Auxentios of Athens. HOCNA is not in communion with any mainstream Orthodox church.
Perhaps its most prominent community is Holy Transfiguration Monastery in Boston.
The Holy Orthodox Church in North America is an Eparchial Synod with parishes and monastic communities in Canada and the United States, as well as Europe and Africa. Today HOCNA consists of nine monastic communities with a total of almost 100 monastics and 62 parishes with an estimated 6000 faithful. Their monastic communities are well known worldwide for their incense, hand painted icons and mounted icon photographs, pure beeswax candles, vestments and clerical clothing. Also, since the founding of Holy Transfiguration Monastery, the brotherhood has dedicated themselves to producing translations of texts necessary for Orthodox Church life. Many books of the lives of the Saints and concerning matters of the Faith have been published. Especially, out of desire to benefit the Church, liturgical books of primary importance have been translated into English and published by Holy Transfiguration Monastery: A Prayerbook for Orthodox Christians, The Pentecostarion, The Great Horologion, the complete 12-volume set of The Menaion and The Psalter According to the Seventy. Some patristic works have also been translated and published, most notably The Ladder of Divine Ascent, The Ascetical Homilies of Saint Isaac the Syrian, and The Synodicon of Orthodoxy. HOCNA has published The Struggle Against Ecumenism, the most extensive history of the "True Orthodox Church" available in English  and also has published a series of tracts on the spiritual life, contemporary Church issues, and moral issues.
Hierarchs, Metropolises and Parishes
Today, HOCNA consists of Holy Transfiguration Monastery and an estimated 30 parishes throughout the United States and Canada, the most famous of which is St Nektarios American Orthodox Cathedral in Seattle, Washington . Administratively, HOCNA is divided into 3 metropolises - Boston, Seatle, and Toronto. HOCNA has five hierarchs. All except one (Sergios) were monks at Holy Transfiguration Monastery for ten years or more.
- Ephraim, Metropolitan of Boston
- Makarios, Metropolitan of Toronto
- Moses, Metropolitan of Portland
- Sergios, Suffragan Bishop of Loch Lomond (and abbot of St. Gregory of Sinai Monastery)
- Demetrius, Suffragan Bishop of Carlisle
United States of America
- Hermitage of the Annunciation, York, Maine
- Holy Apostles Hermitage, York, Maine
- Holy Ascension Skete, York, Maine
- Holy Transfiguration Monastery, Brookline, Massachusetts
- St. Gregory of Sinai Monastery, Kelseyville, California
- Convent of the Meeting of the Lord, Stanwood, Washington
- Holy Nativity Convent, Brookline, Massachusetts
- Hermitage of St. Mary Magdalene, Warrenton, Virginia
- Holy Cross Monastery, Niagara Falls, New York
- Holy Theotokos Convent, Newmarket, Ontario.
Republic of Georgia
- Hermitage of Saint Maximus the Confessor, Abastumani.
- Convent of the Annunciation, Oinoussae, Chios
- Holy Dormition Convent, Chubayevo, Chuvashia
Official HOCNA Sites
- HOCNA Metropolis of Boston (Also here)
- HOCNA Orthodox Christian Metropolis of Portland and the West
- Saint Nektarios Greek Orthodox Cathedral of the Holy Orthodox Metropolis of Toronto
- About Us provided by Ss Peter and Paul Orthodox Church, where Metropolitan Moses serves. Parish listing on the same page.
- HOCNA & The Orthodox: a publication of The Byzantine & Antiquities Studies Institute - formerly the official website of HOCNA, now an independent publication.
- St. Gregory of Sinai Monastery
- Holy Transfiguration Monastery
- Holy Nativity Convent
- Holy Cross Orthodox Monastery
- St. John the Confessor Orthodox Church, Ipswich, MA.
- St. Anna's Orthodox Church, Roslindale, MA.
- St. Mark of Ephesus Orthodox Cathedral, Roslindale, MA.
- St. Philaret Orthodox Mission Chapel, Chicopee, MA.
- St. Seraphim of Sarov Orthodox Church, Mechanicsville, VA.
- A website created by former members of Holy Transfiguration Monastery
- Allegations against HOCNA on Pokrov website
- Fr John Whiteford's articles about HOCNA
Holy Transfiguration Monastery has made available to following documents in order to refute some of the accusations made against them: