Jan's name day is celebrated on January 10 in Poland, January 11 in Sweden, January 17 in Poland, January 23 in Poland, January 31 in Poland, February 4 in Poland, February 5 in Poland, February 8 in Poland, March 5 in Poland, March 8 in Poland, March 17 in Poland, March 27 in Poland, March 28 in Poland, March 30 in Poland, April 13 in Poland, May 6 in Poland, May 10 in Poland, May 12 in Poland, May 15 in Poland, May 21 in Poland, May 22 in Poland, May 23 in Poland, May 24 in Poland, May 27 in Poland, June 12 in Poland, June 16 in Poland, June 24 in Czechia, June 24 in Estonia, June 24 in Poland, June 24 in USA, June 26 in Poland, August 9 in Poland, August 13 in Poland, August 19 in Poland, August 20 in Poland, August 29 in Poland, September 3 in Poland, September 11 in Poland, September 24 in Norway, September 28 in Poland, October 1 in Poland, October 9 in Poland, October 23 in Poland, November 13 in Poland, November 24 in Poland, November 26 in Poland, December 2 in Austria, and December 27 in Poland.
Jan is a universally recognized name, often found across European cultures as a masculine given name, though it also appears as a feminine form in some regions. Its roots trace back to the Hebrew Yochanan, meaning "God is gracious," a meaning that imbues the name with a sense of gentle blessing. The name carries a solid, dependable, and often understated presence, evoking a steady and reliable mood rather than overt flashiness. While primarily masculine, its simplicity allows for a quiet elegance that can transcend traditional gender associations. Across the globe, Jan has a familiar and grounded quality, suggesting a person of quiet strength and inherent kindness.
| Country | Day | Month | Names |
 Poland | 10 | January | Agaton, Dobrosław, Jan, Nikanor, Paweł, Wilhelm |
 Sweden | 11 | January | Jan, Jannike |
| Poland | 17 | January | Antoni, Jan, Rościsław |
| Poland | 23 | January | Emerencja, Ildefons, Jan, Klemens, Maria, Rajmund, Rajmunda, Wrócisława |
| Poland | 31 | January | Cyrus, Euzebiusz, Jan, Ksawery, Ludwik, Marceli, Marcelin, Marcelina, Piotr, Spycigniew, Wirgiliusz |
| Poland | 4 | February | Andrzej, Gilbert, Jan, Joanna, Józef, Mariusz, Weronika, Witosława |
| Poland | 5 | February | Adelajda, Aga, Agata, Albin, Izydor, Jakub, Jan, Justynian, Paweł, Piotr, Strzeżysława |
| Poland | 8 | February | Gniewomir, Gniewosz, Honorat, Jan, Ksenofont, Lucjusz, Paweł, Piotr, Salomon, Sebastian, Żaklina |
| Poland | 5 | March | Adrian, Adrianna, Fryderyk, Jan, Pakosław, Pakosz, Wacław, Wacława |
| Poland | 8 | March | Beata, Filemon, Jan, Julian, Miligost, Miłogost, Stefan, Wincenty |
| Poland | 17 | March | Gertruda, Harasym, Jan, Patrycjusz, Patryk, Regina, Rena, Zbigniew, Zbygniew, Zbyszko |
| Poland | 27 | March | Benedykt, Ernest, Ernestyn, Jan, Lidia, Rościmir, Rupert |
| Poland | 28 | March | Aniela, Antoni, Jan, Krzesisław, Sykstus |
| Poland | 30 | March | Amelia, Aniela, Częstobor, Jan, Kwiryn, Kwiryna |
| Poland | 13 | April | Hermenegild, Hermenegilda, Ida, Jan, Justyn, Małgorzata, Przemysł, Przemysław |
| Poland | 6 | May | Benedykta, Benita, Dytrych, Gościwit, Jan, Judyta, Jurand |
| Poland | 10 | May | Antonin, Częstomir, Izydor, Jan, Symeon, Wiktoryna |
| Poland | 12 | May | Domicela, Domicjan, Dominik, Epifani, Flawia, Jan, Jazon, Joanna, Pankracy, Wszemił |
| Poland | 15 | May | Afanazy, Atanazy, Berta, Cecyliusz, Czcibora, Dionizja, Izydor, Jan, Nadzieja, Ruprecht, Strzeżysław, Zofia |
| Poland | 21 | May | Donat, Donata, Jan, Kryspin, Przecława, Pudens, Tymoteusz, Walenty, Wiktor, Wiktoriusz |
| Poland | 22 | May | Emil, Helena, Jan, Julia, Krzesisława, Rita, Wiesław, Wiesława, Wisława |
| Poland | 23 | May | Budziwoj, Dezyderiusz, Dezydery, Emilia, Iwona, Jan, Leontyna, Michał, Symeon |
| Poland | 24 | May | Cieszysława, Estera, Jan, Joanna, Maria, Mokij, Wincenty, Zula, Zuzanna |
| Poland | 27 | May | Beda, Izydor, Jan, Juliusz, Lucjan, Magdalena, Radowit |
| Poland | 12 | June | Antonina, Bazyli, Jan, Leon, Onufry, Wyszemir |
| Poland | 16 | June | Alina, Aneta, Benon, Budzimir, Jan, Justyna, Ludgarda |
 Czechia | 24 | June | Jan |
 Estonia | 24 | June | Johannes, Johan, Juhan, Juho, Jaan, Jan, Kanek, Janno, Jukk, Juss, Hannes, Annes, Hans, Ants |
| Poland | 24 | June | Dan, Danisz, Danuta, Emilia, Jan, Wilhelm |
 USA | 24 | June | Hans, Giovanna, Giovanni, Ian, Ivan, Jan, Jana, Jean, Jeanette, Jeannette, Johan, John, Johnnie, Johnny, Juan, Juana, Juanita, Sean, Shana, Shane, Shanna, Yancy |
| Poland | 26 | June | Jan, Jeremi, Jeremiasz, Paweł, Zdziwoj |
| Poland | 9 | August | Jan, Klarysa, Miłorad, Roland, Roman, Romuald |
| Poland | 13 | August | Diana, Dianna, Gertruda, Helena, Hipolit, Hipolita, Jan, Kasjan, Radomiła, Wojbor |
| Poland | 19 | August | Bolesław, Emilia, Jan, Julian, Juliusz, Ludwik, Piotr, Sebald |
| Poland | 20 | August | Bernard, Jan, Sabin, Samuel, Samuela, Sieciech, Sobiesław, Świeciech, Szwieciech |
| Poland | 29 | August | Flora, Jan, Racibor, Sabina |
| Poland | 3 | September | Antoni, Bartłomiej, Bazylissa, Bronisław, Bronisz, Erazma, Eufemia, Eufrozyna, Izabela, Jan, Joachim, Joachima, Manswet, Mojmir, Szymon, Wincenty, Zenon, Zenona |
| Poland | 11 | September | Feliks, Jacek, Jan, Naczesław, Prot |
 Norway | 24 | September | Jan, Jens |
| Poland | 28 | September | Jan, Laurencjusz, Luba, Lubosza, Marek, Nikita, Salomon, Sylwin, Wacław, Wacława, Wawrzyniec, Więcesław |
| Poland | 1 | October | Benigna, Cieszysław, Dan, Danisz, Danuta, Igor, Jan, Remigiusz |
| Poland | 9 | October | Arnold, Arnolf, Atanazja, Bogdan, Dionizjusz, Dionizy, Jan, Ludwik, Przedpełk |
| Poland | 23 | October | Iga, Ignacja, Ignacy, Jan, Marlena, Odilla, Roman, Seweryn, Teodor, Włościsław, Żegota |
| Poland | 13 | November | Arkadiusz, Arkady, Brykcjusz, Eugeniusz, Jan, Mikołaj, Stanisław, Walentyn |
| Poland | 24 | November | Dobrosław, Emilia, Emma, Flora, Franciszek, Gerard, Gerarda, Gerhard, Jan, Mina, Pęcisław, Protazy |
| Poland | 26 | November | Delfin, Dobiemiest, Jan, Konrad, Konrada, Lechosław, Lechosława, Leonard, Sylwester |
 Austria | 2 | December | Bibiana, Jan, Lucius |
| Poland | 27 | December | Cezary, Fabia, Fabiola, Jan, Radomysł |
| Country | Day | Month | Names |
 Croatia | 5 | January | Emilijana, Radoslav, Miljenko |
| Croatia | 7 | January | Rajmund, Lucijan, Zorislav |
| Poland | 7 | January | Chociesław, Izydor, Julian, Lucjan, Walenty |
| Croatia | 9 | January | Julijan, Živko, Miodrag |
| Poland | 9 | January | Antoni, Bazylissa, Borzymir, Julian, Julianna, Marcelina, Marcjanna |
 Latvia | 10 | January | Dorisa, Karmena, Tatjana |
 Spain | 11 | January | Alejandro, Guillermo, Hortensia, Higinia, Higinio, Modesto |
| Austria | 12 | January | Ernst, Tatjana, Xenia |
| Poland | 12 | January | Antoni, Arkadiusz, Arkady, Benedykt, Czech, Czechasz, Czechoń, Czesław, Czesława, Ernest, Ernestyn, Greta, Reinhold, Tycjan |
| Croatia | 19 | January | Mario, Ljiljana, Marta |
| Croatia | 20 | January | Fabijan, Sebastijan |
| Croatia | 21 | January | Agneza, Janja, Neža |
| Croatia | 23 | January | Emerencijana, Ema, Vjera, Milko |
| Poland | 25 | January | Miłosz, Miłowan, Miłowit, Paweł, Tacjanna, Tatiana |
| Croatia | 27 | January | Angela, Vitalijan, Pribislav |
| Poland | 27 | January | Angelika, Ilona, Jan Chryzostom, Julian, Przybysław |
| Spain | 30 | January | Alejandro |
| Croatia | 2 | February | Marijan |
| Poland | 11 | February | Adolf, Adolfa, Adolfina, Alf, Bernadetta, Dezydery, Eufrozyna, Łazarz, Lucjan, Maria, Olgierd, Świętomira |
| Croatia | 12 | February | Reginald, Damjan, Eulalija |
| Croatia | 16 | February | Onezim, Julijana, Miljenko |
| Croatia | 18 | February | Angelico, Šimun, Flavijan, Gizela |
| Poland | 2 | March | Absalon, Franciszek, Halszka, Helena, Henryk, Januaria, Krzysztof, Lew, Michał, Paweł, Piotr, Radosław, Symplicjusz |
| USA | 3 | March | Alasdair, Alastair, Alec, Alejandra, Alejandro, Alex, Alexa, Alexander, Alexandra, Alexandria, Alexia, Alexis, Alexus, Ali, Alondra, Dale, Darnell, Lex, Lexi, Lexie, Lexus, Sandra, Sandy, Sasha, Xander, Zander |
 Hungary | 5 | March | Adorján, Adrián |
| Croatia | 10 | March | Emilijan, Emil, Krunoslav |
| Croatia | 12 | March | Bernard, Budislav, Maksimilijan |
| Poland | 13 | March | Bożena, Ernest, Ernestyn, Kasjan, Krystyna, Marek, Roderyk, Rodryg, Rodryk, Trzebisław |
| Croatia | 14 | March | Matilda, Miljana, Borka |
| Croatia | 16 | March | Hrvoje, Miljan |
| Spain | 20 | March | Alejandra, Claudia |
| Croatia | 21 | March | Kristijan, Vesna, Vlasta |
| Spain | 27 | March | Ruperto, Lilia, Alejandro |
 Denmark | 8 | April | Janus |
| Poland | 8 | April | Apolinary, Cezary, Cezaryna, Dionizy, Gawryła, January, Radosław, Sieciesława |
 Finland | 12 | April | Julia, Julius, Janna, Juliaana, Janni, Juulia, Juuli |
| Croatia | 14 | April | Valerijan, Maksim |
| Croatia | 20 | April | Janja, Marcijan |
| Norway | 21 | April | Jannike, Jeanette |
| Finland | 23 | April | Yrjö, Jyrki, Jyri, Jiri, Jori, Yrjänä |
| Spain | 3 | May | Juvenal, Violeta, Evencio, Teódulo, Alejandro, Estela, Felipe |
| Sweden | 3 | May | Jane, John |
| Croatia | 4 | May | Florijan, Cvjetko, Cvijeta |
| Poland | 4 | May | Florian, Grzegorz, January, Michał, Monika, Paulin, Strzeżywoj |
| Latvia | 14 | May | Aiva, Duda, Elfa, Krisjanis, Kriss |
| Poland | 16 | May | Andrzej, Honorat, Jan Nepomucen, Jędrzej, Szymon, Trzebomysł, Ubald, Wieńczysław, Wiktorian |
| Spain | 18 | May | Alejandra, Félix, Próspero |
| Poland | 19 | May | Augustyn, Celestyn, Iwo, Mikołaj, Pękosław, Piotr, Potencjana |
| Czechia | 24 | May | Jana |
| Spain | 29 | May | Alejandro, Justo, Teodosia |
| Hungary | 30 | May | Janka, Zsanett |
| Poland | 1 | June | Alfons, Alfonsyna, Bernard, Fortunat, Gracjana, Hortensjusz, Jakub, Konrad, Konrada, Magdalena, Nikodem, Świętopełk, Symeon |
| Poland | 4 | June | Bazyliusz, Dacjan, Franciszek, Gościmił, Karol, Karp |
| Croatia | 8 | June | Dijana, Cecilija, Medardo, Vilim |
| Estonia | 9 | June | Haljand, Hallar, Hellar, Helar, Helari, Elar |
| Poland | 9 | June | Felicjan, Pelagia, Pelagiusz |
| Croatia | 10 | June | Margareta, Dijana, Bl. Ivan Dominici |
| Poland | 13 | June | Antoni, Chociemir, Herman, Lucjan, Maria Magdalena, Tobiasz |
| Poland | 17 | June | Adolf, Adolfa, Adolfina, Agnieszka, Alf, Drogomysł, Franciszek, Laura, Marcjan, Radomił, Rainer, Wolmar |
| Croatia | 18 | June | Marko, Marcelijan, Ljubomir |
| Finland | 24 | June | Johannes, Juhani, Jussi, Jani, Janne, Juha, Juhana, Juho, Jukka |
| Latvia | 24 | June | Janis, Zanis |
 Slovakia | 24 | June | Ján |
| Hungary | 26 | June | János, Pál |
| Croatia | 28 | June | Irenej, Smiljan |
| Norway | 9 | July | Gøran, Jøran, Ørjan |
| Sweden | 9 | July | Jörgen, Örjan |
| Poland | 10 | July | Aleksander, Amelia, Aniela, Filip, January, Radziwoj, Rufina, Samson, Sylwan, Sylwana, Witalis |
| Poland | 12 | July | Andrzej, Euzebiusz, Feliks, Henryk, Jan Gwalbert, Paweł, Piotr, Tolimir, Weronika |
| Poland | 17 | July | Aleksander, Aleksy, Andrzej, Bogdan, Dzierżykraj, Januaria, Julietta, Leon, Marceli, Marcelina, Maria Magdalena |
| Poland | 18 | July | Arnold, Arnolf, Erwin, Erwina, Kamil, Karolina, Robert, Roberta, Szymon, Unisław, Wespazjan |
| Croatia | 20 | July | Ilija prorok, Ilijana |
| Norway | 21 | July | Jane, Janne, Johanne |
| Croatia | 24 | July | Kristina Bols., Mirjana |
| Croatia | 4 | August | Ivan M. Vianney, Ivica, Tertulijan |
| Poland | 6 | August | Felicysym, Jakub, January, Sława, Stefan, Sykstus, Wincenty |
| Croatia | 13 | August | Poncijan, Hipolit, Ivan Berchmans |
| Croatia | 14 | August | Maksimilijan Kolbe, Alfred |
| Estonia | 15 | August | Johanna, Hanna, Jaana, Jaanika, Jana, Janika, Janne, Jenny, Nanna |
| Austria | 17 | August | Gudrun, Hyazinth, Janine |
| Latvia | 21 | August | Janina, Linda, Sidnejs |
| Slovakia | 21 | August | Jana |
| USA | 21 | August | Gianna, Jane, Janelle, Janessa, Janet, Janette, Janice, Janie, Janine, Janiya, Jayne, Shanice, Sheena |
| Poland | 22 | August | Cezary, Dalegor, Fabrycjan, Fabrycy, Hipolit, Hipolita, Maria, Namysław, Oswald, Oswalda, Tymoteusz, Zygfryd |
| Croatia | 16 | September | Kornelije, Cipirijan |
| Austria | 19 | September | Igor, Januarius |
| Croatia | 19 | September | Januarije, Emilija |
| Poland | 19 | September | Alfons, Alfonsyna, January, Konstancja, Sydonia, Teodor, Więcemir |
| Croatia | 26 | September | Kuzma, Damjan, Damir |
| Croatia | 3 | October | Kandid, Maksimilijan, Evald |
| Croatia | 5 | October | Rajmund of Capua, Flavijan, Miodrag |
| Croatia | 11 | October | Emilijan, Bruno K. |
| Poland | 20 | October | Budzisława, Irena, Jan Kanty, Kleopatra, Wendelin, Witalis |
| Poland | 26 | October | Dymitriusz, Ewaryst, Eweryst, Łucjan, Lucyna, Ludmiła, Lutosław |
| Estonia | 13 | November | Kristjan, Krister, Kristo, Risto |
| Finland | 15 | November | Janina, Janika, Janita, Janette |
| Croatia | 19 | November | Janja Asiška, Matilda, Krispin |
| Poland | 21 | November | Albert, Alberta, Albertyna, Janusz, Konrad, Konrada, Maria, Piotr, Regina, Rena, Rufus, Twardosław, Wiesław |
| Croatia | 2 | December | Bibijana, Blanka |
| Poland | 3 | December | Franciszek, Kasjan, Ksawery, Lucjusz, Unimir |
| Latvia | 15 | December | Jana, Johanna |
| Croatia | 16 | December | Lazar, Izak, Jolanda, Florijan |
| Croatia | 17 | December | Gacijan, Bosiljko, Rufo, Dražen |
| Poland | 18 | December | Bogusław, Gracjan, Gracjana, Laurencja, Wilibald, Wszemir |
| Croatia | 26 | December | Ivan ev., Ivo, Janko |
| Hungary | 27 | December | János |
