thumb|The [[Eastern Orthodox Church|Eastern Orthodox cross]]
June 12 - Eastern Orthodox Church calendar - June 14
All fixed commemorations below celebrated on June 26 by Orthodox Churches on the Old Calendar.
For June 13th, Orthodox Churches on the Old Calendar commemorate the Saints listed on May 31.
Saints
- Martyr Aquilina of Byblos in Lebanon (293)
- Martyr Antonina of Nicaea (c. 284–305)
- Martyr Diodorus of Emesus, who was crucified.
- The Myriad Holy Martyrs, by the sword.
- Saint Triphyllius, Bishop of Ledra (Leucosia, Nicosia) in Cyprus (c. 370)
- Saint Antipater of Bostra, Bishop of Bostra in Arabia Petraea (458)
- Saint Eulogius of Alexandria, Patriarch of Alexandria (607)
- Saint Anna of Larissa in Thessaly (826) and her son John (9th century)
- Saint Jacob the Ascetic (James), who was demonically deceived and worshipped antichrist, but later repented.
Pre-Schism Western saints
- Saint Felicula, a virgin-martyr in Rome under Domitian (c. 90)
- Saint Fandilas, a priest and Abbot of Peñamelaria near Cordoba in Spain, beheaded in Cordoba by order of the Emir Mohammed (853)
- Venerable Sabbas of Moscow, Abbot (1410)
- Saint Niphon Kausokalybites, monk, of Kapsokalyvia, Mount Athos (1411)
- Venerable Alexandra (Melgunova) of Diveyevo, foundress of Diveyevo Convent (1789)
- Saint John Triantaphyllides, the New Chrysostom and Merciful, of Chaldia in Asia Minor (1903)
- New Hieromartyr Demetrius, Priest (1940)
- Synaxis of New Martyrs and Confessors of Zaporizhzhia, Ukraine.
- Repose of Archimandrite Dimitry (Egorov) of Santa Rosa, California (1992)
