Bart's name day in the United States is recognized and celebrated on August 24.
Bart is a distinctly masculine American name, primarily functioning as a concise short form of the ancient Aramaic name Bartholomew. Rooted in an origin meaning “son of the ploughman,” it carries historical weight while remaining modern and accessible. Historically popular in the mid-20th century, its usage reflects a preference for direct and robust nomenclature. The name projects a mood that is brisk, playful, and straightforward. Despite its brevity, Bart possesses a strong identity, balancing tradition with a casual American vibe.
| Country | Day | Month | Names |
 Lithuania | 10 | March | Butgaile, Emilis, Geraldas, Naubartas |
 Poland | 21 | April | Addar, Anzelm, Bartosz, Drogomił, Feliks, Irydion, Konrad, Konrada, Selma |
| Poland | 30 | April | Bartłomiej, Chwalisława, Eutropiusz, Jakub, Katarzyna, Lilla, Marian |
| Lithuania | 10 | June | Galindas, Margarita, Vingaile, Zybartas |
 Greece | 11 | June | Varnavas, Luke, Bartholomeos |
 Ukraine | 11 | June | Bartholomew |
| Poland | 5 | July | Antoni, Bartłomiej, Filomena, Jakub, Karolina, Michał, Przybywoj, Szarlota, Wilhelm |
| Poland | 26 | July | Anna, Bartolomea, Grażyna, Mirosława |
| Lithuania | 1 | August | Almeda, Bartautas, Bartaute |
 Austria | 24 | August | Bartholomäus, Michaela |
 Croatia | 24 | August | Bartol, Bariša, Zlata |
 Czechia | 24 | August | Bartoloměj |
 Denmark | 24 | August | Bartholomæus |
 France | 24 | August | Barthélémy |
 Italy | 24 | August | Bartolomeo |
| Poland | 24 | August | Bartłomiej, Cieszymir, Jerzy, Joanna, Malina, Michalina |
 Slovakia | 24 | August | Bartolomej |
 Spain | 24 | August | Bartolomé |
 Sweden | 24 | August | Bartolomeus |
| Greece | 25 | August | Bartholomeos, Titos |
| Poland | 3 | September | Antoni, Bartłomiej, Bazylissa, Bronisław, Bronisz, Erazma, Eufemia, Eufrozyna, Izabela, Jan, Joachim, Joachima, Manswet, Mojmir, Szymon, Wincenty, Zenon, Zenona |
 USA | 6 | September | Bartram, Bertram, Nasir, Veda, Yahir |
| Lithuania | 7 | September | Bartas, Barte, Palmira, Regina |
| Lithuania | 18 | October | Kesmina, Liubartas, Lukas |
| USA | 3 | November | Hobart, Hubert, Huberta, Malachi, Silvia, Sylvia, Winfred, Winifred, Winnie |
| Lithuania | 4 | November | Eibartas, Karolis, Vaidmina |
| Poland | 11 | November | Anastazja, Bartłomiej, Maciej, Marcin, Prot, Spycisław, Teodor |
| Lithuania | 21 | November | Alberta, Eibarte, Gomantas, Honorijus |
| Lithuania | 23 | November | Adele, Doviltas, Klemensas, Liubarte |
| Lithuania | 24 | November | Gerardas, Mantvinas, Zybarte |