Antoni has multiple name days in Poland including January 9, 12, and 17, February 6, March 1 and 28, April 3 and 10, June 7 and 13, July 5, 7, and 24, September 3, October 24 and 31, November 7, and December 28.
Antoni is a widely recognized name in Europe, particularly in Poland and Spain, while appearing as a distinct, stylish variation in the United States. Derived from the Latin Antonius, the name suggests qualities of great value and historical importance. The name carries an elegant, strong, and classic mood, projecting a sense of reliability and sophistication. It is predominantly used as a masculine name, maintaining its traditional identity across various cultures. Its ability to transcend borders while retaining a sense of dignity makes it a popular choice for many. The name reflects a balance between deep historical roots and a modern, timeless appeal.
| Country | Day | Month | Names |
 Poland | 9 | January | Antoni, Bazylissa, Borzymir, Julian, Julianna, Marcelina, Marcjanna |
| Poland | 12 | January | Antoni, Arkadiusz, Arkady, Benedykt, Czech, Czechasz, Czechoń, Czesław, Czesława, Ernest, Ernestyn, Greta, Reinhold, Tycjan |
| Poland | 17 | January | Antoni, Jan, Rościsław |
| Poland | 6 | February | Angel, Angelus, Antoni, Bogdana, Bohdan, Bohdana, Dorota, Ksenia, Szymon, Tytus |
| Poland | 1 | March | Albin, Antoni, Antonina, Budzisław, Budzisz, Eudokia, Eudoksja, Ewdokia, Feliks, Herakles, Herkules, Jewdocha, Joanna, Józef, Nikifor, Piotr |
| Poland | 28 | March | Aniela, Antoni, Jan, Krzesisław, Sykstus |
| Poland | 3 | April | Antoni, Cieszygor, Jakub, Pankracy, Ryszard |
| Poland | 10 | April | Antoni, Apoloniusz, Daniel, Ezechiel, Grodzisław, Henryk, Makary, Małgorzata, Michał, Pompejusz |
| Poland | 7 | June | Antoni, Ciechomir, Jarosław, Lukrecja, Paweł, Robert, Roberta, Wiesław, Wisław |
| Poland | 13 | June | Antoni, Chociemir, Herman, Lucjan, Maria Magdalena, Tobiasz |
| Poland | 5 | July | Antoni, Bartłomiej, Filomena, Jakub, Karolina, Michał, Przybywoj, Szarlota, Wilhelm |
| Poland | 7 | July | Antoni, Benedykt, Cyryl, Estera, Kira, Metody, Piotr, Pompejusz, Sędzisława, Wilibald |
| Poland | 24 | July | Antoni, Kinga, Krystyna, Kunegunda, Olga, Wojciecha |
| Poland | 3 | September | Antoni, Bartłomiej, Bazylissa, Bronisław, Bronisz, Erazma, Eufemia, Eufrozyna, Izabela, Jan, Joachim, Joachima, Manswet, Mojmir, Szymon, Wincenty, Zenon, Zenona |
| Poland | 24 | October | Antoni, Boleczest, Filip, Hortensja, Marcin, Rafaela, Rafał, Salomon |
| Poland | 31 | October | Alfons, Alfonsyna, Antoni, Antonina, August, Augusta, Godzimir, Godzisz, Lucylla, Łukasz, Saturnin, Saturnina, Urban, Wolfgang |
| Poland | 7 | November | Achilles, Antoni, Engelbert, Florentyn, Melchior, Przemił |
| Poland | 28 | December | Antoni, Dobrowiest, Emma, Godzisław, Teofila |
| Country | Day | Month | Names |
 Slovakia | 6 | January | Antónia, Traja králi |
 Estonia | 12 | January | Antonia, Ande, Tooni |
 Austria | 17 | January | Antonius, Beatrix |
 Bulgaria | 17 | January | Andon, Anton, Antonia, Dona, Doncho, Donka |
 Denmark | 17 | January | Antonius |
 Greece | 17 | January | Antonios, Antonia, Anthony, Tony, Theodosis |
 Hungary | 17 | January | Antal, Antónia |
 Romania | 17 | January | Antonie |
 Spain | 17 | January | Alba, Antonio, Mariana, Mariano, Alfredo |
 USA | 17 | January | Anthony, Antoine, Antoinette, Anton, Antonia, Antonio, Antony, Antwan, Ben, Benita, Benito, Benjamin, Bennie, Benny, Toni, Tony |
 Russia | 14 | March | Antonina |
| Spain | 25 | April | Antonio, Antonieta, Marco, Marcia, Erminío, Herminío |
| Poland | 3 | May | Aleksander, Antonina, Maria, Mariola, Świętosława |
| Austria | 6 | May | Antonia, Britto, Gundula |
 Italy | 10 | May | Antonino |
| Poland | 10 | May | Antonin, Częstomir, Izydor, Jan, Symeon, Wiktoryna |
| Bulgaria | 10 | June | Antonina |
 Ukraine | 10 | June | Antonina, Antonia |
 Czechia | 12 | June | Antonie |
| Poland | 12 | June | Antonina, Bazyli, Jan, Leon, Onufry, Wyszemir |
| Austria | 13 | June | Antonius, Bernhard |
| Czechia | 13 | June | Antonín |
| Italy | 13 | June | Antonio da Padova |
| Spain | 13 | June | Antonio de Padua, Antonia, Joel, Andoni |
| Russia | 23 | June | Alexandra, Antonina |
| Austria | 5 | July | Albrecht, Antonius, Letizia |
| Italy | 5 | July | Antonio Maria Zaccaria |
 Sweden | 17 | October | Antonia, Toini |
| Italy | 24 | October | Antonio Maria Claret |
| Spain | 24 | October | Antonio María Claret |
 Latvia | 28 | October | Antonina, Nina, Ninona, Zemgals |
| Romania | 23 | November | Antonie |
| Latvia | 7 | December | Anta, Antonija, Dzirkstite, Tonija |