December 3 (Eastern Orthodox liturgics)
December 2 – Eastern Orthodox liturgical calendar – December 4
All fixed commemorations below celebrated on December 16 by Orthodox Churches on the Old Calendar.
For December 3rd, Orthodox Churches on the Old Calendar commemorate the Saints listed on November 20.
Saints
Prophet Zephaniah- Martyrs Agapius, Seleucus, and Mamas, Indus, Domna, Glycerius, and 40 Martyrs, in Sofianá
- Venerable Theodoulos the Stylite, Eparch of Constantinople
- Venerable Theodoulos of Cyprus, MonkSaint John the Silent, Bishop of Colonia in Armenia, and later a monk of Saint Sabbas (Sava's) Monastery
- Hieromartyr Theodore I, Patriarch of Alexandria
Pre-Schism Western saints
- Saint Lucius, King of Britain who requested missionaries for his people in 187, founding the dioceses of London and Llandaff
- Martyr Cassian of Tangier
- Saint Mirocles, Archbishop of Milan and Confessor, helped develop the Ambrosian Liturgy and chanting
- Martyr Agricola, in Pannonia
- Martyrs Claudius, Crispin, Magina, John, and Stephen, in Africa
- Saint Nicetius, Archbishop of Lugdunum, Gaul
- Saint Birinus, Bishop of Dorchester, "Apostle to the West Saxons"
- Saint Eloquius, disciple and successor of Saint Fursey as Abbot of Lagny
- Saint Ethernan, born in Scotland, became a bishop in Ireland, returned to preach the Gospel in Scotland
- Saint Attalia, a niece of Saint Ottilia, she became a nun and Abbess of St. Stephen's in Strasbourg
- Saint Sola, Anglo-Saxon missionary priest under Saint Boniface
- Saint Abbo, Bishop of Auxerre
Post-Schism Orthodox saints
- Venerable Sabbas of Storozhev, Abbot of Storozhev in Zvenigorod, Disciple of Venerable Sergius of Radonezh
- Saint Hilarion Grigorovich, Bishop of Krutitsa
- Venerable George of Cernica and Caldarushani, Archimandrite, Romania
New martyrs and confessors
- New Hieromartyr Gabriel II, Ecumenical Patriarch of Constantinople, previously Bishop of Ganos, at Prusa
- New Monk-Martyr Cosmas of Saint Anne's Skete, Mount Athos
- New Martyr Angelos of Chios, formerly a doctor of Argos
- New Hieromartyr Andrew Kosovky, Protopresbyter of Simferopol-Crimea
- New Hieromartyr Nicholas Yershov, Priest of Yaroslavl-Rostov
- New Confessor George Sedov
Other commemorations
- Repose of King Magnus II (IV) Eriksson of Sweden and Valaam, Gregory in schema
- Repose of Archimandrite Theophanes of Novoezersk Monastery in Novgorod