| Country | Day | Month | Names |
 Greece | 1 | January | Vasilis, Vasiliki, Koula, Basil, Bill, Tilemahos |
| Greece | 2 | January | Serafim, Sylvester |
| Greece | 3 | January | Genovefa, Genevieve |
| Greece | 5 | January | Theoni, Theopemptos, Siglitiki |
| Greece | 6 | January | Theofania, Theofanis, Fani, Fannoula, Fotis, Fotini, Jordan, Ourania |
| Greece | 7 | January | Ioannis, Giannis, Gianna, John, Jeannette, Ivana, Prodromos |
| Greece | 8 | January | Dominiki, Agathon, Kelsios, Parthena, Vasilissa |
| Greece | 11 | January | Theodosios |
| Greece | 12 | January | Mertios, Tatiana |
| Greece | 13 | January | Ermilos |
| Greece | 14 | January | Nina |
| Greece | 17 | January | Antonios, Antonia, Anthony, Tony, Theodosis |
| Greece | 18 | January | Kyrillos, Thanassis, Theodoula |
| Greece | 19 | January | Makarios, Efrasia |
| Greece | 20 | January | Thimios, Fabianos, Thyrsi |
| Greece | 21 | January | Maximos, Neofytos, Evgenios |
| Greece | 22 | January | Anastasios, Tassos, Timothy |
| Greece | 23 | January | Agathagellos, Dionisis |
| Greece | 24 | January | Xenis, Xenia, Zosimas |
| Greece | 25 | January | Grigorios, Gregory, Margarita |
| Greece | 26 | January | Xenofontos |
| Greece | 28 | January | Haris, Palladios |
| Greece | 29 | January | Varsamia |
| Greece | 30 | January | Trion Ierarhon, Avra, Mavros, Chrysi |
| Greece | 31 | January | Kyros, Evdoxia |
