January 11 in Eastern Orthodox liturgical calendars is a feast day and a day of commemoration of saints and martyrs. Although some Orthodox churches use the Revised Julian Calendar and others use the traditional Julian calendar, the fixed commemorations for their respective January 11 are broadly the same, no matter which calendar is used..
Afterfeast of the Theophany of Our Lord and Savior Jesus Christ
Martyrs Peter, Severius and Leucius, at Alexandria
Venerable Theodosius, Ascetic of Rhosus and Antioch, Wonderworker (c. 412) (see also: February 5 - Greek)
Venerable Theodosius the Great, the Cenobiarch (529)
Saint Stephen of Placidian near Constantinople
Venerable Theodorus, and Venerable Archimandrite Agapius of Apamea in Syria
Venerable Vitalis (Vitalios) of the Monastery of Abba Seridus, Gaza (609–620)
Hieromartyr Hyginus, Pope of Rome (142)
Saint Leucius, venerated as the first Bishop of Brindisi, where he had come as a missionary from Alexandria (180)
Hieromartyr Alexander of Fermo, Bishop, martyred under Decius (c. 250)
Saints Ethenia and Fidelmia, Princesses, daughters of King Laoghaire in Ireland, veiled as nuns by Saint Patrick (433)
Martyr Salvius, in North Africa, eulogized by Saint Augustine
Saint Brandan, Abbot, opponent of Pelagianism (5th century)
Saint Honorata of Pavia, Nun, sister of Saint Epiphanius of Pavia, who ransomed her after she was abducted from the monastery of Saint Vincent in Pavia (c. 500)
Saint Anastasius of Castel Sant'Elia, Abbot (c. 570)
Saint Boadin the Irish, hermit in Gaul
Saints Paldo, Taso, and Tato, three brothers, Abbots of San Vincenzo on the Voltorno (8th century)