Jan's name day is observed on numerous dates throughout the year across Europe and the USA. Significant celebrations occur in Poland on January 10, 17, 23, 31, February 4, 5, 8, March 5, 8, 17, 27, 28, 30, April 13, May 6, 10, 12, 15, 21, 22, 23, 24, 27, June 12, 16, 24, 26, August 9, 13, 19, 20, 29, September 3, 11, 28, October 1, 9, 23, November 13, 24, 26, and December 27. Other countries celebrate on January 11 in Sweden, June 24 in Czechia, Estonia, and Slovakia, June 24 in the USA, September 24 in Norway, and December 2 in Austria.
Jan is a globally recognized name with a rich history, particularly popular in Central Europe, Scandinavia, and the United States. It originates from Hebrew roots meaning God is gracious, reflecting a long-standing spiritual tradition. In English-speaking regions, it is frequently a female name, whereas in European countries like Poland and the Netherlands, it is predominantly male. The name's tone is characterized as elegant and minimalist, offering a strong yet sophisticated vibe. Its enduring appeal lies in its simplicity and the cultural weight it carries across diverse borders. This versatility ensures its continued use as a classic choice for new generations.
| 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 |