| Name | Meaning | Gender |
|---|
| Jody | God is Gracious, God shall add (a another son) | Unisex |
| Joe | God shall add (a another son) | Boy |
| Joel | Jehovah is the lord | Unisex |
| Joey | God shall add (a another son) | Boy |
| Johanan | God is gracious | Boy |
| John | God is gracious | Boy |
| Johnathan | God has given | Boy |
| Johnathon | God has given | Boy |
| Johnie | God is gracious | Boy |
| Johnnie | God is gracious | Unisex |
| Johnny | God is gracious | Boy |
| Jojo | God is Gracious, God shall add (a another son) | Unisex |
| Joktan | Small | Boy |
| Jolyon | Descended from Jupiter (Jove) | Boy |
| Jon | God has given | Boy |
| Jona | Dove | Boy |
| Jonah | Dove | Boy |
| Jonathan | God has given | Boy |
| Jonathon | God has given | Boy |
| Jonny | God is gracious | Boy |
| Jonty | God has given | Boy |
| Jools | Descended from Jupiter (Jove), Youth | Unisex |
| Jophiel | Beauty of God | Boy |
| Joram | God is exalted | Boy |
| Jordan | Flowing down | Unisex |
| Jordana | Flowing down | Unisex |
| Jordon | Flowing down | Unisex |
| Josaphat | God has judged, Whom God judges | Boy |
| Joseph | God shall add (a another son) | Boy |
| Joses | Exalted | Boy |
| Josh | God is salvation | Boy |
| Joshaphat | God has judged, Whom God judges | Boy |
| Joshawa | God is salvation | Boy |
| Joshua | God is salvation | Boy |
| Josiah | Whom Jehovah heals | Boy |
| Joss | Gaut | Unisex |
| Josse | Lord | Boy |
| Josslyn | Garnet (the gem), Gaut | Unisex |
| Jotham | God is perfect | Boy |
| Joy | Joy, Happiness, Joyful, Pleasure | Unisex |
| Jubal | River, Stream | Boy |
| Juda | Praised | Boy |
| Judah | Praised | Boy |
| Judd | Flowing down | Boy |
| Jude | Praised | Boy |
| Jules | Descended from Jupiter (Jove), Youth | Unisex |
| Julian | Descended from Jupiter (Jove), Youth | Boy |
| Julius | Descended from Jupiter (Jove), Youth | Boy |
| Julyan | Descended from Jupiter (Jove), Youth | Boy |
| Junior | Young, A nickname for a boy having same name as his father | Boy |
| Justin | Fair, Just | Boy |
| Justy | Fair, Just | Unisex |
| Kade | Round and lumpy | Boy |
| Kaden | Little battle | Boy |
| Kadence | Flow of Rhythm | Unisex |
| Kae | Lord | Boy |
| Kaleb | Dog, Faithful | Boy |
| Kam | Crooked Nose | Boy |
| Kameron | Crooked Nose | Boy |
| Kamryn | Crooked Nose | Unisex |
| Kane | Little battle | Boy |
| Kaolin | Little Slender One | Boy |