| Country | Day | Month | Names |
 Italy | 1 | January | Santi del giorno |
 Latvia | 18 | January | Akselis, Antis, Antons |
 Greece | 2 | February | Ypapanti |
 Czechia | 9 | March | Františka |
 Slovakia | 9 | March | Františka |
| Latvia | 11 | March | Agita, Konstantins |
 Lithuania | 11 | March | Gedimtas, Konstantinas, Vijole |
 USA | 11 | March | Alberta, Albertina, Angus, Connie, Constance, Constantine, Consuela, Consuelo, Elberta, Ramiro |
| Italy | 12 | March | Costantino, Rosina |
| Greece | 11 | April | Antipas |
 Austria | 21 | May | Christoph, Constantin, Josef, Julio |
 Bulgaria | 21 | May | Elena, Konstantin, Kosta, Kostadin, Kostadinka, Lenko, Dicho, Lenko, Dinko, Elenko, Eli, Elin, Elka, Ilona, Kojcho, Kostadina, Kostadinko, Kuncho, Stamen, Stanimir, Stanimira, Stanka, Stoil, Stoyan, Stoian, Stoyanka, Trayko, Dinko |
 Estonia | 21 | May | Konstantin, Kostel, Tiino, Kindel |
 Finland | 21 | May | Konsta, Kosti, Konstantin |
 France | 21 | May | Constantin |
| Greece | 21 | May | Konstantinos, Kostas, Tina, Dina, Eleni, Helen |
 Hungary | 21 | May | Konstantin |
 Spain | 21 | May | Constantino, Virginia, Giselle, Valente |
 Sweden | 21 | May | Conny, Konstantin |
 Ukraine | 21 | May | Constantine, Constance, Helen |
| USA | 5 | June | Boniface, Sancho, Santino, Santos |
| Lithuania | 29 | June | Benita, Gedrime, Mantigirdas, Petras, Povilas |
| Lithuania | 19 | July | Aura, Aureja, Galigantas, Mantigaile, Vincas, Vincentas |
| Lithuania | 22 | July | Dalius, Magdalena, Mantile, Marija |
| Spain | 25 | July | Jaime, Santiago |
| USA | 25 | July | Coby, Colby, Diego, Israel, Jack, Jackie, Jackson, Jaclyn, Jacob, Jacoby, Jacqueline, Jacquelyn, Jacques, Jaime, Jake, Jakob, James, Jameson, Jamie, Jaquan, Jaqueline, Jaxon, Jaxson, Jim, Jimena, Jimmie, Jimmy, Kobe, Koby, Kolby, Santiago |
| Greece | 16 | August | Apostolos, Stamatis, Sarantis |
| Greece | 1 | September | Simeon, Ourania, Penelope, Joshua, Mando, Clea, Aspasia, Antigoni, Margaret, Athina |
| Bulgaria | 3 | September | Antim |
 Denmark | 19 | September | Constantia |
| Slovakia | 19 | September | Konštantín |
| Italy | 2 | October | Santi Angeli Custodi |
| Czechia | 4 | October | František |
| Slovakia | 4 | October | František |
| France | 5 | October | Camélia, Capucine, Daphne, Eglantin, Fleur, Placide |
| Greece | 12 | October | Valantios |
 Croatia | 17 | October | Ignacije Antiohijski, Vatroslav, Ognjen |
| Greece | 17 | October | Antigonos |
| Italy | 17 | October | Ignazio d'Antiochia |
| Spain | 17 | October | Ignacio de Antioquía |
| Italy | 1 | November | Tutti i Santi |
| Italy | 28 | December | Santi Innocenti |
