The name day for Toni is observed on January 17 in both Finland and the United States. In Croatia, the name day for Toni is celebrated on June 13.
The name Toni serves primarily as a diminutive for Anthony or Antonia, originating from the Roman family name Antonius. In the United States, its popularity peaked significantly during the mid-20th century, primarily as a female given name. However, in other regions like Europe, Toni frequently functions as a male diminutive for Anthony or Antonio, making it truly unisex on a global scale. The name itself projects a mood that is both approachable and confident, balancing classic roots with a modern, friendly simplicity.
| Country | Day | Month | Names |
 Slovakia | 6 | January | Antónia, Traja králi |
 Poland | 9 | January | Antoni, Bazylissa, Borzymir, Julian, Julianna, Marcelina, Marcjanna |
 Estonia | 12 | January | Antonia, Ande, Tooni |
| Poland | 12 | January | Antoni, Arkadiusz, Arkady, Benedykt, Czech, Czechasz, Czechoń, Czesław, Czesława, Ernest, Ernestyn, Greta, Reinhold, Tycjan |
 Austria | 17 | January | Antonius, Beatrix |
 Bulgaria | 17 | January | Andon, Anton, Antonia, Dona, Doncho, Donka |
 Denmark | 17 | January | Antonius |
| Estonia | 17 | January | Anton, Anto, Antu, Hando, Tõnis, Tõnu, Tõnn, Tõnno |
 Greece | 17 | January | Antonios, Antonia, Anthony, Tony, Theodosis |
 Hungary | 17 | January | Antal, Antónia |
| Poland | 17 | January | Antoni, Jan, Rościsław |
 Romania | 17 | January | Antonie |
 Spain | 17 | January | Alba, Antonio, Mariana, Mariano, Alfredo |
| 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 |
 Russia | 14 | March | Antonina |
| 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 |
| 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 |
| Poland | 7 | June | Antoni, Ciechomir, Jarosław, Lukrecja, Paweł, Robert, Roberta, Wiesław, Wisław |
| 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 |
| Poland | 13 | June | Antoni, Chociemir, Herman, Lucjan, Maria Magdalena, Tobiasz |
| 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 |
| 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 |
| Romania | 22 | August | Agatonic |
| Poland | 3 | September | Antoni, Bartłomiej, Bazylissa, Bronisław, Bronisz, Erazma, Eufemia, Eufrozyna, Izabela, Jan, Joachim, Joachima, Manswet, Mojmir, Szymon, Wincenty, Zenon, Zenona |
| Poland | 4 | September | Agatonik, Ida, Lilianna, Rościgniew, Róża, Rozalia |
| Greece | 30 | September | Stratonikos |
| Romania | 13 | October | Agatodor, Agatonica, Andrei, Carp, Papil |
 Sweden | 17 | October | Antonia, Toini |
| Italy | 24 | October | Antonio Maria Claret |
| Poland | 24 | October | Antoni, Boleczest, Filip, Hortensja, Marcin, Rafaela, Rafał, Salomon |
| Spain | 24 | October | Antonio María Claret |
 Latvia | 28 | October | Antonina, Nina, Ninona, Zemgals |
| Poland | 31 | October | Alfons, Alfonsyna, Antoni, Antonina, August, Augusta, Godzimir, Godzisz, Lucylla, Łukasz, Saturnin, Saturnina, Urban, Wolfgang |
| Romania | 2 | November | Achindin, Aftonie, Agapie, Elpidifor, Gavriil, Pigasie |
| Poland | 7 | November | Achilles, Antoni, Engelbert, Florentyn, Melchior, Przemił |
| Romania | 23 | November | Antonie |
| Latvia | 7 | December | Anta, Antonija, Dzirkstite, Tonija |
| Poland | 28 | December | Antoni, Dobrowiest, Emma, Godzisław, Teofila |
Finland 
USA 
Croatia