| Name | Group | Language of Origin | Languages of Use | Meaning/Translation or Related Words | US 2021 |
|---|
| Joris | Georg/Georgia | Old Greek | German, Dutch, Low German | farmer, earthworker | |
| Jorja | Georg/Georgia | Old Greek | English | farmer, earthworker | |
| Jörn | Georg/Georgia | Old Greek | German, Low German | farmer, earthworker | |
| Jörna | Georg/Georgia | Old Greek | German | farmer, earthworker | |
| Jörne | Georg/Georgia | Old Greek | German | farmer, earthworker | |
| Josafat | Josaphat | Hebrew | German | Yahweh has judged | |
| Josaphat | Josaphat | Hebrew | German, English | Yahweh has judged | |
| Josceline | Jocelyn | Old French | German, English | Words: gaut | |
| Joselin | Jocelyn | Old French | English | Words: gaut | |
| Joseline | Jocelyn | Old French | German, English | Words: gaut | |
| Joselyn | Jocelyn | Old French | English | Words: gaut | |
| Joslyn | Jocelyn | Old French | English | Words: gaut | |
| Josselin | Josselin | Old French | French | Words: gaut | |
| Jost | Jost | Breton | German | lord | |
| Joyce | Joyce | Breton | English | lord | #957 |
| Jupiter | Jupiter | Indoeuropean | German, Dutch, Scandinavian, English, French, Finnish | Words: light, daylight, deity / father | |
| Júpiter | Jupiter | Indoeuropean | Portuguese, Spanish | Words: light, daylight, deity / father | |
| Jure | Georg/Georgia | Old Greek | Slovenian | farmer, earthworker | |
| Jürg | Georg/Georgia | Old Greek | German | farmer, earthworker | |
| Jürgen | Georg/Georgia | Old Greek | German | farmer, earthworker | |
| Juri | Georg/Georgia | Old Greek | Russian | farmer, earthworker | |
| Jurij | Georg/Georgia | Old Greek | Slavic | farmer, earthworker | |
| Jurka | Georg/Georgia | Old Greek | Polish | farmer, earthworker | |
| Justice | Justice/Justice | Old English | English | justice; judge | #635 |
| Justice | Justice/Justice | Old English | English | justice; judge | #741 |
| Kaapo | Gabriel/Gabriele | Hebrew | Finnish | strong man of God, hero of God; God is my hero | |
| Kaarlo | Karl/Charlotte/Carla | Old High German | Finnish | Words: man, husband | |
| Kadir | Kadir | Arabic | Turkish, Arabic | Words: servant / of / capable, powerful | |
| Kaela | Khalil/Khalilah | Arabic | Arabic | friend | |
| Kahina | Kahina | Arabic | Arabic | priestess | |
| Kahlil | Khalil/Khalilah | Arabic | English | friend | |
| Kaia | Karin | Old Greek | Scandinavian | maybe the pure | #231 |
| Kaina | Kahina | Arabic | Arabic | priestess | |
| Kajsa | Karin | Old Greek | Scandinavian | maybe the pure | |
| Kale | Karl/Charlotte/Carla | Old High German | English, Hawaii | Words: man, husband | |
| Kalila | Khalil/Khalilah | Arabic | Arabic | friend | |
| Kalle | Karl/Charlotte/Carla | Old High German | Scandinavian | Words: man, husband | |
| Kan | Kan | Japanese | Kanji symbol, Japanese | generous | |
| Kara | Cara | Italian | German | dear, beloved | #765 |
| Kareem | Karim/Karima | Arabic | English | generous, noble | #693 |
| Karel | Karl/Charlotte/Carla | Old High German | Dutch, Czech | Words: man, husband | |
| Karen | Karin | Old Greek | German, Scandinavian | maybe the pure | |
| Karim | Karim/Karima | Arabic | Arabic | generous, noble | |
| Karima | Karim/Karima | Arabic | Arabic | generous, noble | |
| Karin | Karin | Old Greek | German, Scandinavian, Finnish | maybe the pure | |
| Karina | Karin | Old Greek | German, Scandinavian | maybe the pure | #675 |
| Karine | Karin | Old Greek | French | maybe the pure | |
| Karita | Caritas | Latin | Scandinavian | Words: charity | |
| Karitas | Caritas | Latin | Icelandic | Words: charity | |
| Karítas | Caritas | Latin | Icelandic | Words: charity | |
| Karl | Karl/Charlotte/Carla | Old High German | German, Scandinavian | Words: man, husband | |
| Karla | Karl/Charlotte/Carla | Old High German | German, Scandinavian | Words: man, husband | #702 |
| Karlee | Karl/Charlotte/Carla | Old High German | English | Words: man, husband | |
| Karley | Karl/Charlotte/Carla | Old High German | English | Words: man, husband | |
| Karli | Karl/Charlotte/Carla | Old High German | English | Words: man, husband | |
| Karlie | Karl/Charlotte/Carla | Old High German | English | Words: man, husband | |
| Karlis | Karl/Charlotte/Carla | Old High German | Latvian | Words: man, husband | |
| Karlo | Karl/Charlotte/Carla | Old High German | Serbo-Croatian | Words: man, husband | |
| Karlotta | Karl/Charlotte/Carla | Old High German | German | Words: man, husband | |
| Karly | Karl/Charlotte/Carla | Old High German | English | Words: man, husband | |
| Karol | Karl/Charlotte/Carla | Old High German | English | Words: man, husband | |
| Karol | Karl/Charlotte/Carla | Old High German | Polish | Words: man, husband | |
| Karola | Karl/Charlotte/Carla | Old High German | German, Latinized | Words: man, husband | |
| Karoliina | Karl/Charlotte/Carla | Old High German | Finnish | Words: man, husband | |
| Karolin | Karl/Charlotte/Carla | Old High German | German | Words: man, husband | |
| Karolina | Karl/Charlotte/Carla | Old High German | German | Words: man, husband | |
| Karolína | Karl/Charlotte/Carla | Old High German | Czech | Words: man, husband | |
| Karoline | Karl/Charlotte/Carla | Old High German | German | Words: man, husband | |
| Károly | Karl/Charlotte/Carla | Old High German | Hungarian | Words: man, husband | |
| Kasimir | Casimir | Polish | German | Words: destroy / great, famous / peace | |
| Kazimir | Casimir | Polish | Russian | Words: destroy / great, famous / peace | |
| Keiko | Keiko | Japanese | Kanji symbol, Japanese | happy child | |
| Kelby | Kelby | Old Norse | English | farm by the spring | |
| Kelian | Cillian | Old Irish | French | maybe war, strife | |
| Kelley | Kelly/Kelly | Old Irish | English | Words: church, monastery | |
| Kelli | Kelly/Kelly | Old Irish | English | Words: church, monastery | |
| Kellie | Kelly/Kelly | Old Irish | English | Words: church, monastery | |
| Kelly | Kelly/Kelly | Old Irish | English, Irish | Words: church, monastery | |
| Kelly | Kelly/Kelly | Old Irish | English, Irish | Words: church, monastery | #848 |
| Kelyan | Cillian | Old Irish | French | maybe war, strife | |
| Kennard | Kennard | Old English | English | Words: royal / warden, guard | |
| Keno | Kuno | Old High German | Frisian | Words: tribe, clan | |
| Kerim | Karim/Karima | Arabic | Turkish | generous, noble | |
| Kerima | Karim/Karima | Arabic | Turkish | generous, noble | |
| Keriman | Karim/Karima | Arabic | Turkish | generous, noble | |
| Khalil | Khalil/Khalilah | Arabic | Arabic | friend | #294 |
| Khalilah | Khalil/Khalilah | Arabic | Arabic | friend | |
| Kilian | Cillian | Old Irish | German, English | maybe war, strife | |
| Killian | Cillian | Old Irish | German, English | maybe war, strife | #347 |
| Kilyan | Cillian | Old Irish | French | maybe war, strife | |
| Kimball | Kimball | Welsh | English | war chief | |
| King | King | English | English | king | #185 |
| Kinga | Kunigunde | Old High German | Hungarian, Polish | Words: tribe, clan / fight | |
| Kingsley | Kingsley | Old English | English | Words: king / wood, clearing, meadow | #705 |
| Kingston | Kingston | Old English | English | king's town | #112 |
| Kira | Cyrus/Kyra | Old Persian | Russian | Words: lord | #384 |
| Kíra | Cyrus/Kyra | Old Persian | Hungarian | Words: lord | |
| Kirby | Kirby | Old Norse | English | maybe village with church | |
| Kiril | Cyrill/Cyrielle | Old Greek | Bulgarian | Words: lord | |
| Kirill | Cyrill/Cyrielle | Old Greek | Estonian | Words: lord | |
