| Country | Day | Month | Names |
 Poland | 30 | January | Adelajda, Feliks, Gerard, Gerarda, Gerhard, Hiacynta, Maciej, Marcin, Martyna, Sebastian |
| Poland | 5 | February | Adelajda, Aga, Agata, Albin, Izydor, Jakub, Jan, Justynian, Paweł, Piotr, Strzeżysława |
 Sweden | 5 | September | Adela, Heidi |
 Spain | 8 | September | Adela, Meritxell, Nuria |
| Poland | 23 | November | Adela, Erast, Felicyta, Klemens, Klementyn, Orestes, Przedwoj |
| Spain | 1 | December | Adelaida, Eloy, Hugo |
| Poland | 12 | December | Adelajda, Aleksander, Dagmara, Paramon, Suliwoj |
 Croatia | 15 | December | Adela kr., Albina, Zorka |
 Italy | 16 | December | Adelaide |
| Poland | 16 | December | Adelajda, Ado, Albina, Alina, Ananiasz, Bean, Zdzisława |
 USA | 16 | December | Addie, Addy, Adela, Adelaide, Adele, Adeline, Adella, Adelle, Alena, Alina, Aline, Della |
 France | 17 | December | Adélaïde, Gaël, Judicaël, Olympe |
 Slovakia | 22 | December | Adela |
| Poland | 24 | December | Ada, Adam, Adamina, Adela, Ewa, Ewelin, Ewelina, Godzisława, Grzegorz, Grzymisława, Hermina, Herminia, Irma, Irmina, Zenobiusz |
Czechia