The name Jon observes its name day on June 24th in both Norway and Spain, on August 21st in Sweden, and on November 11th in the United States of America.
The masculine name Jon is widely popular, especially in the USA and Scandinavia, serving as both a nickname and an independent given name. Historically tracing its lineage back to the Hebrew Yohanan, its underlying meaning translates to “God is gracious.” This brevity contributes to the strong, reliable, and straightforward mood associated with the name. Jon is almost exclusively classified as a male name worldwide, maintaining a traditional gender identity. Its simple, classic structure ensures enduring appeal and easy international recognition.
| Country | Day | Month | Names |
 Lithuania | 9 | January | Algis, Bazile, Gabija, Marcijona |
| Lithuania | 11 | January | Audrius, Marcijonas, Stefanija, Vilne |
| Lithuania | 20 | January | Daugvydas, Fabijonas, Sebastijonas |
| Lithuania | 16 | February | Julijona, Julijonas, Tautvyde |
 France | 1 | March | Albin, Aubin, Jonathan |
 Croatia | 29 | March | Gluha, Jona, Bertold |
 Denmark | 29 | March | Jonas |
 Finland | 29 | March | Jouni, Joni, Joonas, Joona, Jonne, Jonni |
 Norway | 29 | March | Jonas, Jonatan |
 Spain | 29 | March | Jonas, Segundo |
 Sweden | 29 | March | Jens, Jonas |
| Lithuania | 3 | April | Kristijonas, Ricardas, Rimtaute, Vytenis |
| Lithuania | 12 | April | Damijonas, Galmantas, Julius, Jurate |
| Lithuania | 14 | April | Justinas, Vaisvyde, Vaiva, Valerijonas, Visvaldas |
| Lithuania | 20 | April | Agne, Eisvyde, Gostautas, Marcijonas |
| Lithuania | 30 | April | Marijonas, Sofija, Venta, Virbutas |
| Lithuania | 4 | May | Dargailas, Florijonas, Mintaute, Monika |
| Lithuania | 12 | June | Anupras, Dove, Kristijonas, Kristis, Ramunas |
| Lithuania | 24 | June | Eiviltas, Eivilte, Jonas |
| Norway | 26 | June | Jenny, Jonny |
| Lithuania | 2 | July | Gantaute, Jotvingas, Marijonas |
| Lithuania | 11 | July | Kipras, Kiprijonas, Pijus, Sarune, Vilmantas |
| Finland | 21 | July | Jonna, Johanna, Hanna, Jenni, Hanne, Hannele, Jenna, Joanna |
| Norway | 29 | August | Jo, Johan, Jone |
 Austria | 21 | September | Deborah, Jonas, Matthäus |
| France | 21 | September | Déborah, Jonas, Matthieu, Mélissa |
 Greece | 21 | September | Jonas |
 Poland | 21 | September | Bożeciech, Bożydar, Hipolit, Hipolita, Ifigenia, Jonasz, Laurenty, Mateusz, Mira |
 Czechia | 27 | September | Jonáš |
| Lithuania | 27 | September | Adalbertas, Damijonas, Daugile, Kesgaile, Kovaldas |
| Lithuania | 17 | October | Gyte, Kintautas, Marijonas, Ritone |
 USA | 28 | October | Dayanara, Eunice, Jonah, Jonas, Jude, Liberty, Simeon, Simon, Simone, Thad, Thaddea, Thaddeus |
| Lithuania | 5 | November | Audangas, Elzbieta, Elze, Florijonas, Gedvyde |
 Hungary | 12 | November | Jónás, Renátó |
| Poland | 12 | November | Cibor, Czcibor, Izaak, Jonasz, Jozafat, Konradyn, Konradyna, Krystyn, Marcin, Renat, Renata, Witold, Witołd, Witolda |
 Latvia | 21 | November | Andis, Jonass, Zeltite |
| Lithuania | 15 | December | Gaudene, Gaudenis, Kristijona |
| Latvia | 19 | December | Jordisa, Lelde, Minjona, Sarmis |
| Latvia | 20 | December | Abrams, Argods, Arta, Minjona |
| Sweden | 22 | December | Jonatan, Natanael |
| Latvia | 28 | December | Inga, Ivita, Jonatans, Mierins |
| Austria | 29 | December | David, Jonathan, Thomas |
| Poland | 29 | December | Domawit, Dominik, Gosław, Jonatan, Marcin, Tomasz, Trofim |