thumb|An [[Eastern Orthodox Church|Eastern Orthodox cross]]

April 12 - Eastern Orthodox liturgical calendar - April 14

All fixed commemorations below are observed on April 26 by Eastern Orthodox Churches on the Old Calendar.

For April 13, Orthodox Churches on the Old Calendar commemorate the Saints listed on March 31.

Saints

  • Saints Theodosia the Princess (daughter of Emperor Hadrian), and the Eunuch Gerontios (c. 117-138)
  • Martyrs Dadas, Quinctillian and Maximus, the Lectors (c. 284-305) <small>(see also: April 28, August 2)</small>
  • Martyr Crescens of Myra in Lycia (3rd century) <small>(see also: April 15 - Greek)</small>
  • Hieromartyr Artemon, priest of Laodicea in Syria (303) <small>(see also: March 24, April 12 - Greek)</small>
  • Martyrs Eleutherius of Persia, and Zoilus, by beheading (4th century)
  • Martyr Theodosius, by the sword.
  • Martyr Thomais of Alexandria (476) <small>(see also: April 14 - Greek)</small>
  • Saint Martyrius, Patriarch of Jerusalem (486) <small>(see also: April 14 - Slavic)</small>
  • Two Confessor Bishops, who were exiled to the Crimean peninsula together with St. Martin the Confessor, Pope of Rome (ca. 655) <small>(compare also with: Bishops Sergiy, Pir and Theodor, April 14 - Romanian)</small>
  • Venerable martyr Christophoros, of the Great Lavra of St. Sabbas the Sanctified.

Pre-Schism Western saints

  • Saint Ursus, Bishop of Ravenna and Confessor (396)