| Name | Group | Language of Origin | Languages of Use | Meaning/Translation or Related Words | US 2024 |
| Klea | Clea | Old Greek | Albanian | Words: glory | |
| Klementine | Clement/Clemence/Clementine | Latin | German | the merciful, the gentle | |
| Kleopatra | Kleopatra | Old Greek | German | Words: glory / father | |
| Kleopha | Cleopas/Cleopha | Old Greek | German | glory of the father | |
| Kleophea | Cleopas/Cleopha | Old Greek | German | glory of the father | |
| Kloe | Chloe | Old Greek | English | green shoot, young shoot | |
| Klothilde | Klothilde | Old High German | German | Words: loud, famous / fight | |
| Klotild | Klothilde | Old High German | Hungarian | Words: loud, famous / fight | |
| Klotilda | Klothilde | Old High German | German | Words: loud, famous / fight | |
| Klotilde | Klothilde | Old High German | German | Words: loud, famous / fight | |
| Koharu | Koharu | Japanese | Kanji symbol, Japanese | Words: heart, spirit, soul / spring | |
| Kolbrun | Kolbrun | Old Norse | Scandinavian | Words: coal / eyebrow | |
| Kolbrún | Kolbrun | Old Norse | Icelandic | Words: coal / eyebrow | |
| Kolumba | Colombe | Latin | German | dove | |
| Konrada | Conrad/Konrada | Old High German | German | Words: bold / counsel, advice, advisor | |
| Konradine | Conrad/Konrada | Old High German | German | Words: bold / counsel, advice, advisor | |
| Konstantina | Konstantin/Konstanze | Latin | German | the steadfast | |
| Konstantína | Konstantin/Konstanze | Latin | Greek | the steadfast | |
| Konstantine | Konstantin/Konstanze | Latin | German | the steadfast | |
| Konstanze | Konstantin/Konstanze | Latin | German | the steadfast | |
| Konul | Konul | Azerbaijani | Azerbaijani | heart | |
| Kora | Cora | German | German | | #490 |
| Kordelia | Cordula | Latin | German | | |
| Kordula | Cordula | Latin | German | | |
| Kori | Corey/Corey | Latin | English | Words: raven / ravine | #893 |
| Korina | Corinna | Old Greek | English | maiden, virgin | |
| Korinna | Corinna | Old Greek | German | maiden, virgin | |
| Korinne | Corinna | Old Greek | German | maiden, virgin | |
| Kornelia | Cornelius/Cornelia | Latin | German | Words: horn | |
| Korona | Corona | Latin | German | Words: crown, garland | |
| Kortney | Courtney/Courtney | Old French | English | Words: short / nose | |
| Kotone | Kotone | Japanese | Kanji symbol, Japanese | Words: zither / tone, sound | |
| Kourtney | Courtney/Courtney | Old French | English | Words: short / nose | |
| Kreszentia | Crescenzio/Crescentia | Latin | German | the growing | |
| Kreszenz | Crescenzio/Crescentia | Latin | German | the growing | |
| Kriemhild | Kriemhild | Old High German | German | Words: mask, helmet / fight | |
| Kriemhilde | Kriemhild | Old High German | German | Words: mask, helmet / fight | |
| Krimhild | Kriemhild | Old High German | German | Words: mask, helmet / fight | |
| Krimhilde | Kriemhild | Old High German | German | Words: mask, helmet / fight | |
| Kris | Christian/Christine | Latin | German, English | Christian, disciple of Christ | |
| Krishna | Krishna | Unknown | Spanish | | |
| Krista | Christian/Christine | Latin | German, Scandinavian | Christian, disciple of Christ | |
| Kristal | Crystal | English | English | crystal | |
| Kristen | Christian/Christine | Latin | Scandinavian | Christian, disciple of Christ | |
| Kristi | Christian/Christine | Latin | English | Christian, disciple of Christ | |
| Kristian | Christian/Christine | Latin | English | Christian, disciple of Christ | |
| Kristie | Christian/Christine | Latin | English | Christian, disciple of Christ | |
| Kristiina | Christian/Christine | Latin | Finnish | Christian, disciple of Christ | |
| Kristin | Christian/Christine | Latin | Scandinavian | Christian, disciple of Christ | |
| Kristín | Christian/Christine | Latin | Icelandic | Christian, disciple of Christ | |
| Kristina | Christian/Christine | Latin | Scandinavian | Christian, disciple of Christ | |
| Kristína | Christian/Christine | Latin | Slovak | Christian, disciple of Christ | |
| Kristine | Christian/Christine | Latin | Scandinavian | Christian, disciple of Christ | |
| Kristy | Christian/Christine | Latin | English | Christian, disciple of Christ | |
| Kristyn | Christian/Christine | Latin | English | Christian, disciple of Christ | |
| Kristýna | Christian/Christine | Latin | Czech | Christian, disciple of Christ | |
| Krisztina | Christian/Christine | Latin | Hungarian | Christian, disciple of Christ | |
| Krysta | Christian/Christine | Latin | English | Christian, disciple of Christ | |
| Krystal | Crystal | English | English | crystal | |
| Krystina | Christian/Christine | Latin | English | Christian, disciple of Christ | |
| Krystle | Crystal | English | English | crystal | |
| Krystyna | Christian/Christine | Latin | Polish | Christian, disciple of Christ | |
| Ksenia | Xenia | Old Greek | Russian | hospitality | |
| Kseniya | Xenia | Old Greek | Russian | hospitality | |
| Kübra | Kübra | Arabic | Turkish | Words: greater, supreme | |
| Kujtesa | Kujtesa | Albanian | Albanian | memory | |
| Kujtime | Kujtim/Kujtime | Albanian | Albanian | recollection, memoirs | |
| Kumiko | Kumiko | Japanese | Kanji symbol, Japanese | long time beautiful child | |
| Kumsal | Kumsal | Turkish | Turkish | beach | |
| Kunegunda | Kunigunde | Old High German | Polish | Words: tribe, clan / fight | |
| Kunigonde | Kunigunde | Old High German | Dutch | Words: tribe, clan / fight | |
| Kunigunda | Kunigunde | Old High German | German, Slavic | Words: tribe, clan / fight | |
| Kunigunde | Kunigunde | Old High German | German | Words: tribe, clan / fight | |
| Kuniza | Kunigunde | Old High German | German | Words: tribe, clan / fight | |
| Kuntum | Kuntum | Malay | Malay | flower bud | |
| Kya | Kya | Unknown | English | | |
| Kyara | Clare | Latin | Dutch | clear, bright | |
| Kyla | Kyle/Kyle/Kyla | Old Irish | English | Words: narrow, slender | #546 |
| Kylah | Kyle/Kyle/Kyla | Old Irish | English | Words: narrow, slender | |
| Kyle | Kyle/Kyle/Kyla | Old Irish | English | Words: narrow, slender | |
| Kylee | Kylie | Australian | English | maybe boomerang | #821 |
| Kyleigh | Kylie | Australian | English | maybe boomerang | |
| Kyler | Kyler/Kyler | Dutch | English | maybe archer | |
| Kylie | Kyle/Kyle/Kyla | Old Irish | English | Words: narrow, slender | |
| Kylie | Kylie | Australian | English | maybe boomerang | #189 |
| Kylli | Kylli | Finnish | Finnish | abundance | |
| Kyllikki | Kylli | Finnish | Finnish | abundance | |
| Kyndal | Kendall/Kendall | Old English | English | valley of the River Kent | |
| Kyndall | Kendall/Kendall | Old English | English | valley of the River Kent | |
| Kynlee | Mackinley | Scottish | English | son of Finley | |
| Kyra | Cyrus/Kyra | Old Persian | German | Words: lord | #722 |
| Kyrene | Kyrene | Old Greek | German, English | | |