| Country | Day | Month | Names |
 Croatia | 22 | January | Vinko, Irena |
 Spain | 21 | February | Irene, Pedro Damián |
 Poland | 25 | March | Dyzma, Ireneusz, Lucja, Łucja, Lutomysł, Maria, Mariola, Wieńczysław |
 Austria | 1 | April | Hugo, Irene, Irina |
 Italy | 1 | April | Irene |
 Germany | 3 | April | Irene |
 Denmark | 5 | April | Irene |
 Estonia | 5 | April | Irene, Ireene, Reene, Reena, Rena, Renate |
 Finland | 5 | April | Irene, Irina, Ira, Iro |
 France | 5 | April | Irène |
 Lithuania | 5 | April | Irena, Rimvydas, Zenius, Zenonas, Zyginte |
 Norway | 5 | April | Eiril, Eirin, Irene |
| Poland | 5 | April | Borzywoj, Irena, Wincenty |
 Sweden | 5 | April | Irene, Irja |
 USA | 5 | April | Chandra, Ethelburga, Irene, Irina, Tyler, Tylor |
| Poland | 6 | April | Ada, Adam, Adamina, Celestyn, Celestyna, Diogenes, Ireneusz, Katarzyna, Świętobor, Sykstus, Wilhelm, Zachariasz |
 Slovakia | 6 | April | Irena |
 Czechia | 16 | April | Irena |
 Ukraine | 16 | April | Irene, Oryna, Orysia |
 Greece | 26 | April | Glafyra, Irene |
 Bulgaria | 5 | May | Irina, Mira, Irena, Miroslav, Miroslava |
| Greece | 5 | May | Eirinis, Irini, Irene, Efraim |
| Poland | 5 | May | Irena, Ita, Pius, Teodor, Waldemar, Zdzibor |
| Ukraine | 5 | May | Myroslav, Myroslava, Irene |
 Latvia | 13 | May | Ina, Ira, Iraida, Irena, Irene, Irina, Miervalda |
| Norway | 16 | May | Sara, Siren |
| Austria | 28 | June | Ekkehard, Harald, Irenäus |
| Croatia | 28 | June | Irenej, Smiljan |
| France | 28 | June | Irénée |
| Italy | 28 | June | Ireneo |
| Poland | 28 | June | Amos, Ireneusz, Józef, Leon, Paweł, Raissa, Zbrosław |
| Lithuania | 17 | July | Aleksas, Darius, Girenas, Vaiga |
| Greece | 28 | July | Afhentios, Timon, Irene |
| Denmark | 26 | August | Irenæus |
| Croatia | 18 | September | Ivan Macias, J. Kupert., Irena |
| Poland | 18 | September | Dobrowit, Irena, Irma, Józef, Ryszarda, Stefania, Tytus, Zachariasz |
| Ukraine | 18 | September | Irene |
| Poland | 20 | September | Dionizy, Eustachiusz, Eustachy, Fausta, Faustyna, Filipina, Irena, Oleg, Ostap, Sozant |
| Croatia | 20 | October | Vendelin, Irena, Miroslava |
| Italy | 20 | October | Irene del Portogallo |
| Poland | 20 | October | Budzisława, Irena, Jan Kanty, Kleopatra, Wendelin, Witalis |
| Spain | 20 | October | Academia, Irene |
| Croatia | 14 | December | Irenej, Drinske mucenice |
| Lithuania | 21 | December | Girene, Honoratas, Norgaudas, Tomas |
Hungary