| Country | Day | Month | Names |
 Bulgaria | 12 | January | Tanya, Tatyana, Tatiana |
 France | 12 | January | Tatiana |
 Greece | 12 | January | Mertios, Tatiana |
 Spain | 12 | January | Alfredo, Tatiana, Tania, Hilario |
 Ukraine | 12 | January | Tetiana, Tania |
 Denmark | 19 | January | Pontianus |
| Spain | 19 | January | Mario, Vicente, Sebastián |
 Austria | 20 | January | Fabianus, Sebastian, Ursula, Ute |
| Denmark | 20 | January | Fabian, Sebastian |
 Finland | 20 | January | Sebastian |
 Germany | 20 | January | Fabian, Paula, Sebastian |
 Norway | 20 | January | Bastian, Fabian, Sebastian |
 Poland | 20 | January | Dobiegniew, Fabian, Sebastian |
 Slovakia | 20 | January | Dalibor, Sebastián |
 Sweden | 20 | January | Fabian, Sebastian |
 USA | 20 | January | Fabia, Fabian, Fabiola, Sebastian, Sebastiana |
 Italy | 21 | January | Sebastiano |
| USA | 22 | January | Enoch, Piper, Vicenta, Vicente, Vince, Vincent, Vincentia, Vincenzo, Vinnie |
| Poland | 25 | January | Miłosz, Miłowan, Miłowit, Paweł, Tacjanna, Tatiana |
| Poland | 30 | January | Adelajda, Feliks, Gerard, Gerarda, Gerhard, Hiacynta, Maciej, Marcin, Martyna, Sebastian |
| Slovakia | 1 | February | Tatiana |
| Greece | 3 | February | Asimina, Malamati, Stamatis, Stamatia |
| Poland | 8 | February | Gniewomir, Gniewosz, Honorat, Jan, Ksenofont, Lucjusz, Paweł, Piotr, Salomon, Sebastian, Żaklina |
| Spain | 13 | February | Cristian, Benigno |
| Poland | 18 | February | Albert, Alberta, Albertyna, Fryda, Konstancja, Krystiana, Maksym, Sawa, Sylwan, Sylwana, Symeon, Więcesława, Zula, Zuzanna |
| Denmark | 24 | February | Mattias |
 Estonia | 24 | February | Mattias, Madis, Madi, Matis, Mati, Matti, Mats, Mait, Maido, Maidu, Mäido |
| Finland | 24 | February | Matias, Matti |
| Norway | 24 | February | Mathias, Mats, Mattias, Mattis |
| Sweden | 24 | February | Mats, Mattias |
| USA | 24 | February | Maddison, Madison, Madisyn, Madyson, Mateo, Mathew, Mathias, Matt, Mattea, Matthew, Matthias, Mattias, Mattie, Matty, Modesto |
| Greece | 26 | February | Porfyros, Sebastian, Fotini, Anatoli, Fay |
| Ukraine | 26 | February | Sebastian |
 Hungary | 13 | March | Krisztián, Ajtony |
| Austria | 21 | March | Axel, Christian, Emilia |
| Austria | 5 | April | Crescentia, Vinzenz |
| Spain | 29 | April | Teodora, Karen, Katia, Wilfredo, Catalina |
| Austria | 14 | May | Bonifatius, Christian |
| Denmark | 14 | May | Kristian |
| Italy | 14 | May | Mattia |
| Norway | 14 | May | Karsten, Kristen, Kristian |
| Spain | 14 | May | Matías, Corona, Cora, Henedina, Alba, Gemma |
| Denmark | 19 | May | Potentiana |
| Ukraine | 24 | May | Christian |
| Hungary | 6 | June | Norbert, Cintia |
| Greece | 7 | June | Sevastianis, Sevasti, Sebastian |
| Ukraine | 15 | June | Krystsentia |
| France | 30 | June | Adolphe, Martial |
 Latvia | 24 | July | Krista, Kristiana, Kristine, Krists |
| USA | 24 | July | Amalia, Amelia, Boris, Chris, Christa, Christen, Christian, Christiana, Christie, Christin, Christina, Christine, Christy, Chrysta, Cristina, Cristian, Declan, Kiersten, Kirsten, Kirstie, Kirstin, Krista, Kristen, Kristian, Kristi, Kristin, Kristina, Kristine, Kristy, Kristyn, Maya |
| Spain | 25 | July | Jaime, Santiago |
| USA | 25 | July | Coby, Colby, Diego, Israel, Jack, Jackie, Jackson, Jaclyn, Jacob, Jacoby, Jacqueline, Jacquelyn, Jacques, Jaime, Jake, Jakob, James, Jameson, Jamie, Jaquan, Jaqueline, Jaxon, Jaxson, Jim, Jimena, Jimmie, Jimmy, Kobe, Koby, Kolby, Santiago |
| Greece | 2 | August | Justianos |
 Czechia | 5 | August | Kristian |
| Austria | 13 | August | Cassian, Hippolyt, Marko, Pontianus |
| France | 18 | August | Hélène, Laétitia |
| Norway | 13 | September | Stian, Stig |
| USA | 14 | September | Keisha, Lakeisha, Latasha, LaTease, Latisha, Leticia, Letitia, Letty, Tish, Tisha |
| Poland | 16 | September | Antym, Cyprian, Edda, Edyta, Eufemia, Eugenia, Franciszek, Jakobina, Kamila, Kornel, Lucja, Łucja, Sebastiana, Sędzisław, Wiktor, Wiktoriusz |
| Denmark | 19 | September | Constantia |
| Slovakia | 19 | October | Kristián |
| Greece | 24 | October | Sevastianis, Sebastian |
| USA | 5 | November | Perdita, Tiara, Tiera, Tierra, Swain, Swana |
| France | 12 | November | Christian |
| Finland | 13 | November | Ano, Kristian |
| Sweden | 13 | November | Krister, Kristian |
| Poland | 4 | December | Barbara, Berno, Biernat, Chrystian, Hieronim, Krystian, Piotr |
| Austria | 15 | December | Carlo, Christiane, Nina |
| Poland | 15 | December | Celina, Fortunata, Iga, Ignacja, Ignacy, Krystiana, Nina, Walerian, Waleriana, Wolimir, Żegota |
| Greece | 18 | December | Floros, Sebastian |
| Bulgaria | 25 | December | Hristina, Hristo, Kristina, Kristian, Kristiana, Emil, Itso, Icho, Mladen, Radoslav, Radoslava, Radomir, Radostin, Radostina, Hristofor |
| Poland | 31 | December | Korneliusz, Mariusz, Melania, Sebastian, Sylwester, Tworzysław |
