| Country | Day | Month | Names |
 Austria | 25 | November | Katharina, Kathrin, Katja |
 Bulgaria | 25 | November | Kliment, Klimentina |
 Croatia | 25 | November | Katarina Aleksandrijska |
 Czechia | 25 | November | Kateřina |
 Denmark | 25 | November | Catharina |
 Estonia | 25 | November | Katariina, Katrin, Katre, Katri, Kadrin, Kadri, Kadi, Kati, Kaarin, Karin, Triin, Triina, Triinu |
 Finland | 25 | November | Katri, Kaija, Katja, Kaisa, Kati, Kaarina, Kaisu, Katariina, Katriina, Riina |
 France | 25 | November | Catherine |
 Germany | 25 | November | Katharina |
 Greece | 25 | November | Merkourios, Katerina, Catherine, Karen |
 Hungary | 25 | November | Katalin |
 Italy | 25 | November | Caterina d'Alessandria |
 Latvia | 25 | November | Kate, Katrina, Trine |
 Lithuania | 25 | November | Germile, Kotryna, Santautas |
 Norway | 25 | November | Kari, Katarina, Katrine |
 Poland | 25 | November | Erazm, Jozafat, Katarzyna, Tęgomir |
 Slovakia | 25 | November | Katarína |
 Spain | 25 | November | Erasmo |
 Sweden | 25 | November | Katarina, Katja |
 USA | 25 | November | Caitlin, Caitlyn, Carina, Caryn, Catherine, Cathleen, Cathy, Kaitlin, Kaitlynn, Kara, Karen, Kari, Karina, Kate, Katelyn, Katelynn, Katharine, Katherine, Kathleen, Kathryn, Kathy, Katie, Katrina, Treena, Trina, Trinity |
