June 12 (Eastern Orthodox liturgics)

• Virgin-martyr Antonina, of Nicaea in Bithynia (c. 286-305)[1][2][3][note 2] (see also: March 1)
• Saints Basilides, Cyrinus, Nabor and Nazarius, and those with them, soldiers, at Rome (304)[5][6][note 3]
• Saint Amphianus (Amphion, Alerion, Amphitrion), Bishop and Confessor, in Cilicia (c. 310)[7][note 4]
• Saint Triphyllius, Bishop of Leucosia (Nicosia), in Cyprus (370)[2][7]
• Saint Zenon, Bishop of Kyrenia in Cyprus.[2][3][8][note 5]
• Saint Olympius, Bishop and Confessor, in Thrace (4th century)[7][9][note 6]
• Saint Timothy the Hermit, of Egypt (4th century)[7][9]
• Saints John, Andrew, Heraclemon, and Theophilus, hermits of Egypt (4th century)[7][9][10][11][12] (see also: December 2)
• Venerable Onuphrius the Great (4th century)[2][7][13][14][15][note 7][note 8][note 9]
• Saint John the Soldier, of Egypt (6th-7th century)[2][3][7][9][16]
• Venerable Peter of Mount Athos (734)[2][7][17][18]
• Venerable Julian of Dagaz (Dogazou), of the Dagouta Church in Constantinople.[2][3][7][9][19]
• Saint John (Tornicus) of Mt. Athos and Georgia (998)[7][9][20][21]

• Virgin-martyr Cunera of Rhenen, Netherlands (451)[7][9][22][23]
• Saint Ternan, an early missionary bishop among the Picts in Scotland (5th century)[24][25][note 10]
• Saint Leo III, Pope of Rome, who refused to add the filioque to the Nicene Creed (816)[24][26][note 11][note 12]
• Saint Odulphus (Odulph), Confessor and Priest (c. 855)[24][27][note 13]
• Saint Gerebald, Bishop of Châlons-sur-Seine in France (885)[24]

• New Martyr John of Trebizond, who contested in Akkerman (Asprokastron, Bilhorod-Dnistrovskyi) (1330 or 1492)[2][3][28][29]
• Venerable Arsenius of Konevits, founder of Konevits Monastery, Wonderworker (1447)[2][3][7][9][10][30][31][note 14]
• Venerable Onuphrius of Malsk, founder of Malsk Monastery in Pskov, Wonderworker (1492)[7][9][10][32][33][note 15]
• Saints Onuphrius and Auxentius, monks, of Vologda (15th-16th century)[7][9][10][34][35]
• Venerable Stephen of Komel, founder of Ozersk Monastery in Vologda (1542)[7][9][10][36]
• Saints Jonah and Bassian, monks of Pertomsk in Solovki (1561)[7][9][10][37][note 16]
• Saint Onuphrius of Katrom Monastery, founder of Katrom Monastery in Vologda (16th century)[7][9][38]
• Venerable Serapion the Wonderworker, of Izborsk, Igumen (16th century)[39]
• Saint Onuphrius the Fool-for-Christ, of Romanov-Borisoglebsk.[40][note 17]
• Venerable Onuphrios of Preveza, of the Monastery of the Birth of the Theotokos, in Coronisia in Arta, Greece (18th century)[3][41]
• Hieromartyr Benedict of Serres and Thessaloniki, priest, by beheading, and other monk-martyrs with him (1821):[3][42]

• Monk-martyr Paul of Ioannina and Thessaloniki (c. 1821)[3][43]
• Monk-martyr Synesios of Thessaloniki (1821)[3][44]
• Monk-martyr Timotheos of Veria and Thessaloniki (1822)[3][45]

• Synaxis of Venerable Alypius the Stylite of Adrianopolis, in Constantinople.[46][note 18]
• First (1650)[47] and second (1909)[48] glorifications of St. Anna of Kashin (1368), princess of Kashin (Euphrosyne in monasticism).[7][9][10]
• Uncovering of the relics (1672) of St. John of Moscow, Fool-for-Christ (1589)[7][9]
• Synaxis of the Saints of the St. Onuphrius Monastery at Jabłeczna in Poland.[7][9]
• Miracle-working icons of the Theotokos and St. Onuphrius, at St. Onuphrius Monastery in Poland (14th century)[7][9]
• Repose of Elder Peter of Katounakia, Mt. Athos (1867)[7]
• Repose of Blessed Hermit Philaretus of Mt. Athos (1961)[7]

• 
  Saint Triphyllius, Bishop of Leucosia.
• 
  Venerable Onuphrius the Great.
• 
  Venerables Onuphrius the Great and Peter of Mount Athos.
• 
  Venerables Onuphrius the Great, Macarius of Egypt, and Peter of Mount Athos.
• 
  Virgin-martyr Cunera of Rhenen.
• 
  Venerable Arsenius of Konevits.
• 
  Sts. Jonah and Bassian, monks of Pertomsk in Solovki.
• 
  St. Anna of Kashin.
• 
  St. Onuphrius Monastery at Jabłeczna in Poland.

• June 12/25. Orthodox Calendar (PRAVOSLAVIE.RU).
• June 25 / June 12. HOLY TRINITY RUSSIAN ORTHODOX CHURCH (A parish of the Patriarchate of Moscow).
• June 12. OCA - The Lives of the Saints.
• The Autonomous Orthodox Metropolia of Western Europe and the Americas (ROCOR). St. Hilarion Calendar of Saints for the year of our Lord 2004. St. Hilarion Press (Austin, TX). p. 43.
• The Twelfth Day of the Month of June. Orthodoxy in China.
• June 12. Latin Saints of the Orthodox Patriarchate of Rome.
• The Roman Martyrology. Transl. by the Archbishop of Baltimore. Last Edition, According to the Copy Printed at Rome in 1914. Revised Edition, with the Imprimatur of His Eminence Cardinal Gibbons. Baltimore: John Murphy Company, 1916. p. 171.
• Rev. Richard Stanton. A Menology of England and Wales, or, Brief Memorials of the Ancient British and English Saints Arranged According to the Calendar, Together with the Martyrs of the 16th and 17th Centuries. London: Burns & Oates, 1892. pp. 265–267.

Greek Sources

• Great Synaxaristes: (in Greek) 12 ΙΟΥΝΙΟΥ. ΜΕΓΑΣ ΣΥΝΑΞΑΡΙΣΤΗΣ.
• (in Greek) Συναξαριστής. 12 Ιουνίου. ECCLESIA.GR. (H ΕΚΚΛΗΣΙΑ ΤΗΣ ΕΛΛΑΔΟΣ).
• (in Greek) 12/06/2017. Ορθόδοξος Συναξαριστής.

Russian Sources

• (in Russian) 25 июня (12 июня). Православная Энциклопедия под редакцией Патриарха Московского и всея Руси Кирилла (электронная версия). (Orthodox Encyclopedia - Pravenc.ru).
• (in Russian) 12 июня по старому стилю / 25 июня по новому стилю. Русская Православная Церковь - Православный церковный календарь на 2017 год.
• (in Russian) 12 июня (ст.ст.) 25 июня 2014 (нов. ст.). Русская Православная Церковь Отдел внешних церковных связей. (DECR).