| AIKATERINE f Greek, Ancient Greek |
| CADI f Welsh |
| CAELIE f English (Rare) |
| CAETLIN f English (Rare) |
| CAILEIGH f English (Rare) |
| CAILIN f English (Rare) |
| CAILYN f English (Modern) |
| CÁIT f Irish |
| CAITLÍN f Irish |
| CAITLIN f English, Irish |
| CAITLYN f English (Modern) |
| CAITRIA f Irish |
| CAITRÍONA f Irish |
| CAITRÌONA f Scottish |
| CAJA f Danish |
| CAJSA f Swedish |
| CALEIGH f English (Modern) |
| CAREN f English |
| CARIN f Swedish |
| CARINA (2) f Danish, German, Norwegian, Swedish |
| CARYN f English |
| CĂTĂLIN m Romanian |
| CĂTĂLINA f Romanian |
| CATALINA f Spanish |
| CATARINA f Galician, Italian, Occitan, Portuguese |
| CATE f English (Rare) |
| CATELINE f Medieval French |
| CATERINA f Catalan, Italian |
| CATHARINA f Dutch, Swedish |
| CATHARINE f English |
| CATHERIN f English (Rare) |
| CATHERINA f English (Rare) |
| CATHERINE f English, French |
| CATHLEEN f English, Irish |
| CATHRIN f German |
| CATHRINE f Danish, Norwegian, Swedish |
| CATHRYN f English |
| CATHY f English |
| CÁTIA f Portuguese |
| CATINA f Romanian |
| CATO (2) f Dutch |
| CATRIN f German, Welsh |
| CATRINA f Irish, Scottish |
| CATRINE f Swedish |
| CATRIONA f Irish, Scottish |
| CAYLEY f English (Rare) |
| ECATERINA f Romanian |
| EKA (2) f Georgian |
| EKATERINA f Bulgarian, Macedonian, Russian |
| EKATERINE f Georgian |
| HEKATE f Greek Mythology |
| INA f Croatian, Danish, Dutch, German, Limburgish, Norwegian, Swedish |
| JEKATERINA f Russian |
| KAARINA f Finnish |
| KADRI f Estonian |
| KAE f English (Rare) |
| KAELEA f English (Rare) |
| KAELEE f English (Rare) |
| KAETY f English (Rare) |
| KAI (2) f Swedish |
| KAIA f Norwegian |
| KAIJA f Finnish |
| KAILEE f English (Modern) |
| KAILEY f English (Modern) |
| KAILYN f English (Modern) |
| KAISA f Estonian, Finnish |
| KAITLIN f English (Modern) |
| KAITLYN f English (Modern) |
| KAITLYNN f English (Modern) |
| KAJ (2) f Swedish (Rare) |
| KAJA (1) f Danish, Norwegian, Swedish |
| KAJSA f Swedish |
| KAKALINA f Hawaiian |
| KALEIGH f English (Modern) |
| KALENA f Hawaiian |
| KALEY f English (Modern) |
| KALIE f English (Modern) |
| KALYN f English (Modern) |
| KAREN (1) f Danish, English, German, Norwegian |
| KARENA f English (Rare) |
| KARI (1) f Norwegian |
| KARIN f Danish, Dutch, English, Finnish, German, Norwegian, Swedish |
| KARINA f Danish, English, German, Norwegian, Polish, Russian, Swedish |
| KARINE f Norwegian |
| KARYN f English |
| KASIA f Polish |
| KAT f English |
| KATA f Croatian, Finnish, Hungarian |
| KATALIN f Basque, Hungarian |
| KATALINKA f Hungarian |
| KATARIINA f Estonian, Finnish |
| KATARIN f Breton |
| KATARÍNA f Slovak |
| KATARINA f Croatian, Danish, German, Hungarian, Norwegian, Serbian, Slovene, Swedish |
| KATARINE f German |
| KATARZYNA f Polish |
| KATE f Croatian, English |
| KATEE f English (Rare) |
| KATELIJN f Dutch |
| KATELIJNE f Dutch |
| KATELIN f English (Modern) |
| KATELL f Breton |
| KATELYN f English (Modern) |
| KATELYNN f English (Modern) |
| KATENKA f Russian |
| KATERI f History |
| KATEŘINA f Czech |
| KATERINA f Bulgarian, Greek, Macedonian, Late Roman, Russian |
| KATERYNA f Ukrainian |
| KATEY f English |
| KATHARINA f Danish, German, Norwegian, Swedish |
| KATHARINE f English, German |
| KATHARYN f English |
| KÄTHE f German |
| KATHERINA f English (Rare), German |
| KATHERINE f English |
| KATHERYN f English |
| KATHERYNE f English (Rare) |
| KATHI f English |
| KATHIE f English |
| KATHLEEN f English, Irish |
| KATHLYN f English |
| KATHRIN f German |
| KATHRINE f Danish, Norwegian |
| KATHRYN f English |
| KATHY f English |
| KATI f Estonian, Finnish, Hungarian |
| KATIA f Russian |
| KATICA f Croatian, Slovene |
| KATIE f English |
| KATINA f Greek, Macedonian |
| KATINKA f Dutch, German |
| KATJA f Danish, Dutch, German, Norwegian, Slovene, Swedish |
| KATKA f Czech, Slovak |
| KATLYN f English (Modern) |
| KATÓ f Hungarian |
| KATRĖ f Lithuanian |
| KATRI f Finnish |
| KATRIEN f Dutch |
| KATRIINA f Finnish |
| KATRIJN f Dutch |
| KATRIN f Estonian, German, Swedish |
| KATRINA f Dutch, English, German, Swedish |
| KATRINE f Danish, Norwegian |
| KATRIONA f English (Rare) |
| KATSIARYNA f Belarusian |
| KATTALIN f Basque |
| KATY f English |
| KATYA f Russian |
| KAY (1) f English |
| KAYE f English |
| KAYLA (1) f English |
| KAYLEAH f English (Rare) |
| KAYLEE f English (Modern) |
| KAYLEEN f English (Rare) |
| KAYLEIGH f English (Modern) |
| KAYLEY f English (Modern) |
| KAYLIE f English (Modern) |
| KAYLIN f English (Modern) |
| KAYLY f English (Rare) |
| KAYLYN f English (Modern) |
| KAYLYNN f English (Modern) |
| KEIGHLEY f English (Rare) |
| KEILA f English (Modern) |
| KERENA f English (Rare) |
| KIT f English |
| KITTI f Hungarian |
| KITTY f English |
| KOTRYNA f Lithuanian |
| NIENKE f Frisian |
| NINE f Frisian |
| RIINA f Estonian, Finnish |
| RINA (1) f Dutch, Italian |
| RÍONA f Irish |
| SHAYLA f English |
| TAYLA f English (Modern) |
| TINA f Croatian, Dutch |
| TINEKE f Dutch |
| TRIINU f Estonian |
| TRIJNTJE f Dutch |
| TRINA f English |
| TRINE f Danish |
| YEKATERINA f Russian |
