| Date | Saints and feasts | Name days |
|---|
| December 1 | Nahum the Prophet, Philaret the Merciful, Ananias the Persian, Onesimus of Ephesus and 2 more | Naoum, Nahum, Filaretos, Philaretos, Philaret, Filareti, Ananias, Theoklitos, Theocletus |
| December 2 | Habakkuk the Prophet, Myrope of Chios, Porphyrios of Kavsokalyvia, Solomon of Ephesus and 3 more | Avakum, Ambakum, Myropi, Myrope, Miropi, Porfyrios, Porphyrios, Porfyris, Solomon |
| December 3 | Zephaniah the Prophet, Theodoulos the Eparch, Theodore of Alexandria, John the Hesychast and 3 more | Sofonias, Theodoulos, Theodoulis, Theodouli, Angelis |
| December 4 | Barbara the Great Martyr, John of Damascus, Seraphim of Phanarion, Juliana of Heliopolis and 2 more | Varvara, Varoula, Babs, Barb, Barbie, Barbara, Damaskinos, Serafeim, Seraphim, Serafim |
| December 5 | Savvas the Sanctified, Diogenes the Martyr, Anastasius the Fuller, Nektarios the Athonite and 2 more | Savvas, Sabbas, Savas, Savvoula, Diogenis, Diogenes |
| December 6 | Nicholas the Wonderworker, Nicholas Karamanos, Antony of Siya, Nilus of Stolbensk | Nikolaos, Nikos, Nikolas, Nikola, Nicolas, Nicholas, Nick, Nikoulas, Niko, Klaus and 8 more |
| December 7 | Ambrose of Milan, Athenodorus of Mesopotamia, Gerasimos of Euripos, Gregory of Grigoriou and 3 more | Amvrosios, Ambrose, Ambrogio, Athinodoros, Athenodorus |
| December 8 | Patapios, Apostles Sosthenes, Apollos, Cephas, Tychicus, Caesar and Epaphroditus, Sophronios of Cyprus, Parthenios of Chios | Patapios, Patatpios, Sosthenis |
| December 9 | Conception of the Theotokos by Anne, Hannah the Prophetess, Stephen the New Light, Narses, Isaac and Sositheus | Anna, Anne, Annie, Ann, Annoula |
| December 10 | Menas, Hermogenes and Eugraphus, Thomas of Bithynia, Gemellus of Paphlagonia, Theotecnus, Marianus and Eugene and 1 more | Minas, Menas, Hermogens |
| December 11 | Daniel the Stylite, Luke the New Stylite, Mirax of Egypt, Aithalas and Akepsimas and 3 more | Daniel, Daniil, Dani |
| December 12 | Spyridon of Trimythous, John of Zichna, Alexander of Jerusalem, Synetus of Rome and 1 more | Spyridon, Spyros, Spiros, Spirou, Spiro, Spyridoula, Spiridoula |
| December 13 | Eustratius and companions, Lucy of Syracuse, Arsenios of Latros, Gabriel of Pec and 2 more | Eustratios, Efstratios, Stratos, Loukia, Lucia, Lucy, Lucie, Loucia |
| December 14 | Thyrsos and companions, Philemon, Apollonius and Arrian, Hypatius and the Thirty-Six Martyrs | Thyrsos |
| December 15 | Eleutherios, Anthia the Martyr, Susanna the Deaconess, Paul of Latros and 3 more | Eleutherios, Eleftherios, Lefteris, Lef, Eleftheris, Eleutherius, Eleftheria, Anthia, Anthea, Sousanna and 4 more |
| December 16 | Aggaeus the Prophet, Theophano the Empress, Modestos of Jerusalem, Marinus of Rome and 2 more | Angeos, Aggaios, Haggai, Theofano, Theophano, Modestos, Modest, Modestus, Marinos |
| December 17 | Daniel the Prophet, Dionysios of Zakynthos, Patermuthius, Copres and Alexander, Stephen the Confessor | Daniel, Daniil, Dani, Dionysios, Dionysis, Dionisios, Dennis, Denis, Dionysius, Dionysia and 1 more |
| December 18 | Sebastian, Companions of Sebastian, Sophia the Wonderworker, Michael the Synkellos and 3 more | Sebastianos, Sebastian, Bastian |
| December 19 | Boniface, Aglaia of Rome, Elias, Probus and Ares, Timothy and Polyeuctus and 3 more | Vonifatios, Boniface, Aglaia, Aglaya, Aglae |
| December 20 | Ignatius the God-Bearer, Philogonius of Antioch, John the Tailor of Thasos, John of Kronstadt and 1 more | Ignatios, Ignacio, Ignatius |
| December 21 | Juliana of Nicomedia, Themistocles of Myra, Five Hundred Martyrs and One Hundred Thirty Women of Nicomedia, Peter of Moscow | Iouliani, Juliana, Julia, Julie, Themistoklis, Themistocles, Themis |
| December 22 | Anastasia the Pharmakolytria, Chrysogonus the Martyr, Theodote and her Three Children, Zoilus the Martyr and 1 more | Anastasia, Nastia, Natasha, Stacy, Theodoti, Theodote |
| December 23 | Ten Martyrs of Crete, Nahum of Ochrid, Niphon of Constantia, Paul of Neocaesarea and 1 more | Nifon, Niphon |
| December 24 | Eugenia of Rome, Philip the Martyr, Ahmed the Calfa, Basilla the Martyr and 3 more | Eugenia, Evgenia, Jenny |
| December 25 | Nativity of Christ, Adoration of the Magi, Shepherds of Bethlehem | Christos, Christodoulos, Chris, Christian, Christoforos, Hristos, Emanuel, Emmanuel, Christopher, Christakis and 4 more |
| December 26 | Synaxis of the Theotokos, King David, Joseph, James, Euthymius of Sardis, Flight into Egypt and 4 more | Emmanuel, Emmanouil, Manolis, Manos, Manuel, Maria, Mary, Maro, Marianna, Panagiota and 9 more |
| December 27 | Stephen the First Martyr, Theodore Graptus, Theodore of Constantinople, Luke of Triglia and 1 more | Stefanos, Stefanis, Stephanos, Stefan, Stephen, Steve, Stefania, Stephania, Stephanie, Stefanie |
| December 28 | Twenty Thousand Martyrs of Nicomedia, Indes, Gorgonius and the Martyrs of Nicomedia, Domna of Nicomedia, Simon the Myrrh-gusher and 2 more | Domna |
| December 29 | Holy Innocents of Bethlehem, Marcellus of the Unsleeping Ones, George of Nicomedia, Thaddeus of Studion and 1 more | Markellos, Marcellus, Marcello |
| December 30 | Anysia of Thessaloniki, Gideon of Karakalou, Theodora of Caesarea, Anysios of Thessalonica and 3 more | Anysia, Gedeon, Gideon |
| December 31 | Melania the Elder, Zoticus the Orphan-keeper, Theophylact of Ochrid, Gelasius the Venerable and 2 more | Melania, Melanie |
