| Country | Day | Month | Names |
 Poland | 1 | December | Długosz, Edmund, Eliga, Eligiusz, Iwa, Natalia, Natalis, Platon, Sobiesława |
| Poland | 2 | December | Adria, Aurelia, Balbina, Bibianna, Paulina, Sulisław, Wiktoryn, Zbylut |
| Poland | 3 | December | Franciszek, Kasjan, Ksawery, Lucjusz, Unimir |
| Poland | 4 | December | Barbara, Berno, Biernat, Chrystian, Hieronim, Krystian, Piotr |
| Poland | 5 | December | Anastazy, Gerald, Geraldyna, Kryspina, Krystyna, Pęcisława, Saba |
| Poland | 6 | December | Dionizja, Emilian, Jarema, Jarogniew, Mikołaj |
| Poland | 7 | December | Agaton, Ambroży, Marcin, Ninomysł |
| Poland | 8 | December | Boguwola, Klement, Maria, Światozar, Wirginiusz |
| Poland | 9 | December | Delfina, Joachim, Joachima, Leokadia, Loda, Waleria, Wielisława, Wiesław |
| Poland | 10 | December | Andrzej, Daniel, Judyta, Julia, Maria, Radzisława |
| Poland | 11 | December | Damazy, Daniela, Julia, Stefan, Waldemar, Wojmir |
| Poland | 12 | December | Adelajda, Aleksander, Dagmara, Paramon, Suliwoj |
| Poland | 13 | December | Łucja, Lucja, Otylia, Włodzisława |
| Poland | 14 | December | Alfred, Arseniusz, Izydor, Naum, Pompejusz, Sławobor, Spirydion |
| Poland | 15 | December | Celina, Fortunata, Iga, Ignacja, Ignacy, Krystiana, Nina, Walerian, Waleriana, Wolimir, Żegota |
| Poland | 16 | December | Adelajda, Ado, Albina, Alina, Ananiasz, Bean, Zdzisława |
| Poland | 17 | December | Florian, Jolanta, Łazarz, Olimpia, Warwara, Żyrosław |
| Poland | 18 | December | Bogusław, Gracjan, Gracjana, Laurencja, Wilibald, Wszemir |
| Poland | 19 | December | Abraham, Beniamin, Dariusz, Gabriela, Mścigniew, Nemezjusz, Tymoteusz, Urban |
| Poland | 20 | December | Amon, Bogumiła, Dominik, Liberat, Teofil |
| Poland | 21 | December | Balbin, Festus, Honorat, Tomasz, Tomisław |
| Poland | 22 | December | Beata, Drogomir, Flawian, Franciszka, Gryzelda, Honorata, Ksawera, Ksaweryna, Zenon, Zenona |
| Poland | 23 | December | Dagobert, Mina, Sławomir, Sławomira, Wiktoria |
| Poland | 24 | December | Ada, Adam, Adamina, Adela, Ewa, Ewelin, Ewelina, Godzisława, Grzegorz, Grzymisława, Hermina, Herminia, Irma, Irmina, Zenobiusz |
| Poland | 25 | December | Anastazja, Eugenia, Piotr, Spirydion |
| Poland | 26 | December | Dionizy, Szczepan, Wróciwoj |
| Poland | 27 | December | Cezary, Fabia, Fabiola, Jan, Radomysł |
| Poland | 28 | December | Antoni, Dobrowiest, Emma, Godzisław, Teofila |
| Poland | 29 | December | Domawit, Dominik, Gosław, Jonatan, Marcin, Tomasz, Trofim |
| Poland | 30 | December | Dawid, Dawida, Dionizy, Eugeniusz, Irmina, Katarzyna, Łazarz, Rainer, Sabin, Sewer, Uniedrog |
| Poland | 31 | December | Korneliusz, Mariusz, Melania, Sebastian, Sylwester, Tworzysław |
