| Name | Group | Language of Origin | Languages of Use | Meaning/Translation or Related Words | US 2021 |
|---|
| Kasimir | Casimir | Polish | German | Words: destroy / great, famous / peace | |
| Kason | Kayson | Unknown | English | | #426 |
| Kaspar | Jasper | Old Persian | German | treasurer | |
| Kasper | Jasper | Old Persian | Polish | treasurer | |
| Kassius | Cassius/Cassia | Latin | German | Words: empty, vain | |
| Kastriot | Kastriot | Albanian | Albanian | | |
| Katsumi | Katsumi | Japanese | Kanji symbol, Japanese | self-control | |
| Kauã | Cauã | Tupi | Portuguese | maybe eagle | |
| Kauê | Cauã | Tupi | Portuguese | maybe eagle | |
| Kavon | Kavon | Unknown | English | | |
| Kay | Cei | Unknown | English | | |
| Kay | Kai/Kaja | Old High German | German, Low German | | |
| Kayaan | Kayaan | Unknown | Hindi | | |
| Kayce | Casey/Casey | Old Irish | English | descendant of Cathasaigh | |
| Kayden | Caden/Kayden | Old Irish | English | son of Cadán | #108 |
| Kaysen | Kayson | Unknown | English | | #580 |
| Kayson | Kayson | Unknown | English | | #283 |
| Kazimir | Casimir | Polish | Russian | Words: destroy / great, famous / peace | |
| Kazuki | Kazuki | Japanese | Kanji symbol, Japanese | 1 tree | |
| Kazuya | Kazuya | Japanese | Kanji symbol, Japanese | Words: harmony, peace / be | |
| Keagan | Keegan | Old Irish | English | descendant of Aodhagán | |
| Keandre | Keandre | Unknown | English | | |
| Keano | Keanu | Hawaii | Dutch | maybe the cool | |
| Keanu | Keanu | Hawaii | Hawaii | maybe the cool | #532 |
| Keaton | Keaton | Old English | English | maybe shed town | #734 |
| Kechik | Kechik | Malay | Malay | small, little | |
| Keegan | Keegan | Old Irish | English, Irish | descendant of Aodhagán | #494 |
| Keenan | Cian | Old Irish | English, Irish | ancient | |
| Kefli | Kefli | Arabic | Malay | | |
| Kegan | Keegan | Old Irish | English, Irish | descendant of Aodhagán | |
| Keion | Keyon | Unknown | English | | |
| Keir | Kerr | Old Norse | English, Scottish | marsh land | |
| Keiran | Kieran/Ciara | Old Irish | Scottish | the black | |
| Keisuke | Keisuke | Japanese | Kanji symbol, Japanese | Words: blessing, kindness / between | |
| Keith | Keith | Celtic | German, English, Scottish | forest | #597 |
| Kelan | Caol | Old Irish | English, Irish | slender, narrow | |
| Kelby | Kelby | Old Norse | English | farm by the spring | |
| Keld | Kettil/Katla | Old Norse | Scandinavian | Words: kettle, helmet | |
| Kelemen | Clement/Clemence/Clementine | Latin | Hungarian | the merciful, the gentle | |
| Kelian | Cillian | Old Irish | French | maybe war, strife | |
| Kellan | Caol | Old Irish | English | slender, narrow | #835 |
| Kellen | Kellen | Unknown | English | | #861 |
| Kelly | Kelly/Kelly | Old Irish | English, Irish | Words: church, monastery | |
| Kelsey | Kelsey/Kelsey | Old English | English | Words: ship / victory | |
| Kelton | Kelton | Old English | English | maybe keel town | |
| Kelvin | Kelvin | Scottish | English | | #907 |
| Kelyan | Cillian | Old Irish | French | maybe war, strife | |
| Kemal | Kemal | Turkish | Turkish | | |
| Ken | Ken/Kenna | Celtic | German, English | the handsome | |
| Kenai | Kenai | Unknown | English | | |
| Kenan | Kenan | Hebrew | English | | |
| Kendal | Kendall/Kendall | Old English | English, Welsh | valley of the River Kent | |
| Kendall | Kendall/Kendall | Old English | English, Welsh | valley of the River Kent | |
| Kende | Kende | Unknown | Hungarian | | |
| Kendrick | Kendrick/Kendra | Celtic | English | maybe high hill | #429 |
| Kenelm | Kenelm | Old English | English | Words: helmet, protection | |
| Kenji | Kenji | Japanese | English | | #845 |
| Kennard | Kennard | Old English | English | Words: royal / warden, guard | |
| Kennedy | Kennedy/Kennedy | Old Irish | English, Scottish, Irish | ugly head | |
| Kenneth | Ken/Kenna | Celtic | English | the handsome | #258 |
| Kenneth | Cináed | Old Irish | English | born of fire | |
| Kenny | Ken/Kenna | Celtic | English, Scottish, Irish | the handsome | |
| Keno | Kuno | Old High German | Frisian | Words: tribe, clan | |
| Kenrick | Kendrick/Kendra | Celtic | English | maybe high hill | |
| Kent | Kent | Celtic | English | Words: border | |
| Kenta | Kenta | Japanese | Kanji symbol, Japanese | Words: healthy, health / great, excellent, thick | |
| Kenton | Kenton | Old English | English | maybe royal manor | |
| Kenyon | Kenyon | Old English | English | | |
| Kenzie | Mackenzie/Mackenzie | Scottish | English | son of Coinneach | |
| Kenzo | Kenzo | Japanese | Kanji symbol, Japanese | Words: healthy, health / three | #529 |
| Keon | Keon | Unknown | English | | |
| Kerem | Kerem | Turkish | Turkish | Words: kindness | |
| Kerim | Karim/Karima | Arabic | Turkish | generous, noble | |
| Keron | Keron | Unknown | Estonian | | |
| Kerr | Kerr | Old Norse | English, Scottish | marsh land | |
| Kerry | Kerry/Kerry | Irish | English | Words: black, dark | |
| Kersten | Christian/Christine | Latin | German, Low German | Christian, disciple of Christ | |
| Keshaun | Keshawn | English | English | | |
| Keshawn | Keshawn | English | English | | |
| Kesler | Kesler | Unknown | English | | |
| Kettil | Kettil/Katla | Old Norse | Scandinavian | Words: kettle, helmet | |
| Keu | Cei | Unknown | English | | |
| Keven | Kevin | Old Irish | English | the beautiful, the gentle | |
| Kévim | Kevin | Old Irish | Portuguese | the beautiful, the gentle | |
| Kevin | Kevin | Old Irish | German, English, Irish | the beautiful, the gentle | #182 |
| Kevon | Kevin | Old Irish | English | the beautiful, the gentle | |
| Keyon | Keyon | Unknown | English | | |
| Keyshawn | Keshawn | English | English | | |
| Khai | Kai/Kaja | Old High German | English | | #986 |
| Khalid | Khalid/Khalida | Arabic | Arabic | eternal | #884 |
| Khalil | Khalil/Khalilah | Arabic | Arabic | friend | #294 |
| Khalish | Khalish | Unknown | Malay | | |
| Khari | Carey | Old Irish | English | descendant of Ciardha | #760 |
| Khaza | Khaza | Unknown | English | | |
| Kiaan | Kiaan | Unknown | Indian | | #752 |
| Kian | Cian | Old Irish | English, Irish | ancient | #453 |
| Kiano | Keanu | Hawaii | German | maybe the cool | |
| Kidlat | Kidlat | Tagalog | Tagalog | lightning | |
| Kieran | Kieran/Ciara | Old Irish | English, Irish | the black | #488 |
| Kieron | Kieran/Ciara | Old Irish | English, Irish | the black | |
