| Name | Group | Language of Origin | Languages of Use | Meaning/Translation or Related Words | US 2021 |
|---|
| 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 |
| Jumoke | Jumoke | Yoruba | Yoruba | maybe the child is loved | |
| Junior | Junior | Latin | English | Words: young child | #740 |
| 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 | |
| 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 | |
| Kadijah | Khadija | Arabic | English | premature child | |
| 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 | |
| Kaina | Kahina | Arabic | Arabic | priestess | |
| Kala | Sarah | Hebrew | Hawaii | princess, noblewoman | |
| 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 | |
| Kamil | Camillo/Camilla | Latin | Polish | maybe acolyte | |
| Kamila | Camillo/Camilla | Latin | Czech, Polish | maybe acolyte | #226 |
| Kamilah | Camillo/Camilla | Latin | English | maybe acolyte | #977 |
| Kamile | Camillo/Camilla | Latin | Lithuanian | maybe acolyte | |
| Kamilla | Camillo/Camilla | Latin | German | maybe acolyte | |
| Kamille | Camillo/Camilla | Latin | English | maybe acolyte | |
| Kamillo | Camillo/Camilla | Latin | German | maybe acolyte | |
| Kamillus | Camillo/Camilla | Latin | German | maybe acolyte | |
| Kamilly | Camillo/Camilla | Latin | Portuguese | maybe acolyte | |
| Kannon | Canon | Old French | English | canon, priest | #593 |
| Karel | Karl/Charlotte/Carla | Old High German | Dutch, Czech | Words: man, husband | |
| 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 | |
| Karsta | Christian/Christine | Latin | German, Low German | Christian, disciple of Christ | |
| Karsten | Christian/Christine | Latin | German, Low German | Christian, disciple of Christ | |
| Kasandra | Cassandra | Old Greek | English | Words: protrude / man | |
| Kassandra | Cassandra | Old Greek | German | Words: protrude / man | |
| Katijah | Khadija | Arabic | Malay | premature child | |
| Kazuko | Kazuko | Japanese | Kanji symbol, Japanese | peace child | |
| Keiko | Keiko | Japanese | Kanji symbol, Japanese | happy child | |
| Keisha | Lakeisha | Swahili | English | favorite one | |
| Kennard | Kennard | Old English | English | Words: royal / warden, guard | |
| Keno | Kuno | Old High German | Frisian | Words: tribe, clan | |
| Kersten | Christian/Christine | Latin | German, Low German | Christian, disciple of Christ | |
| Kerstin | Christian/Christine | Latin | Scandinavian | Christian, disciple of Christ | |
| Khadija | Khadija | Arabic | Arabic, Swahili | premature child | |
| Khadijah | Khadija | Arabic | English | premature child | |
| Khalil | Khalil/Khalilah | Arabic | Arabic | friend | #294 |
| Khalilah | Khalil/Khalilah | Arabic | Arabic | friend | |
| Khatija | Khadija | Arabic | Arabic | premature child | |
| Khatijah | Khadija | Arabic | Malay | premature child | |
| Kiersten | Christian/Christine | Latin | Scandinavian, English | Christian, disciple of Christ | |
| 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 | |
| Kiriko | Kiriko | Japanese | Kanji symbol, Japanese | Words: paulownia / child | |
| Kiril | Cyrill/Cyrielle | Old Greek | Bulgarian | Words: lord | |
| Kirill | Cyrill/Cyrielle | Old Greek | Estonian | Words: lord | |
| Kirill | Cyrill/Cyrielle | Old Greek | Russian | Words: lord | |
| Kirsten | Christian/Christine | Latin | German, Low German, Scandinavian | Christian, disciple of Christ | |
| Kirsten | Christian/Christine | Latin | German, Low German | Christian, disciple of Christ | |
| Kirstie | Christian/Christine | Latin | English, Scottish | Christian, disciple of Christ | |
| Kirstin | Christian/Christine | Latin | German, Scandinavian | Christian, disciple of Christ | |
| Kirsty | Christian/Christine | Latin | English, Scottish | Christian, disciple of Christ | |
| Kjartan | Kjartan | Old Irish | Icelandic | Words: sea / warrior | |
| Kleopas | Cleopas/Cleopha | Old Greek | German | glory of the father | |
| 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 | |
| Koa | Koa | Hawaii | English, Hawaii | warrior | #546 |
| Koen | Conrad/Konrada | Old High German | Dutch | Words: bold / counsel, advice, advisor | #993 |
