Pia: Name day
Name Day List: Pia
| Country | Day | Month | Names |
 Spain | 18 | January | Florida, Beatriz, Mario, Pia |
 Austria | 19 | January | Agritius, Marius, Martha, Pia |
 Poland | 19 | January | Andrzej, Bernard, Erwin, Erwina, Eufemia, Henryk, Kanut, Mariusz, Marta, Matylda, Mechtylda, Pia, Racimir, Sara |
 Sweden | 22 | February | Pia |
 Norway | 12 | December | Peggy, Pia |
Name Day List - similar names (Pia)
| Country | Day | Month | Names |
 Denmark | 23 | February | Papias |
| Denmark | 15 | April | Olympia |
| Poland | 15 | April | Anastazja, Bazyli, Leonid, Ludwina, Modest, Olimpia, Tytus, Wacław, Wacława, Wiktoryn, Wszegniew |
| Spain | 30 | April | Jaime, Amador, Pía, Pío |
 Greece | 11 | May | Methodios, Olympia, Argyris |
| Spain | 15 | June | Lidia, Vito, Landelino, Libia, Benilde, Eutrópia, Crescencia |
| Greece | 25 | July | Olympias, Anna |
| Greece | 10 | August | Evlampia, Laura |
 Slovakia | 17 | September | Olympia |
 Finland | 2 | November | Topi, Topias |
 Hungary | 17 | December | Lázár, Olimpia |
| Poland | 17 | December | Florian, Jolanta, Łazarz, Olimpia, Warwara, Żyrosław |
 USA | 17 | December | Eleazar, Lazar, Lazaro, Lazarus, Olympia, Orval, Orville, Storm, Stormie, Stormy, Wilbert, Wilberta, Wilbur |