| Name | Meaning | Gender |
|---|
| Josette | God shall add (a another son) | Girl |
| 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 |
| Josie | God shall add (a another son) | Girl |
| Joss | Gaut | Unisex |
| Josse | Lord | Boy |
| Josslyn | Garnet (the gem), Gaut | Unisex |
| Josya | | Girl |
| Jotham | God is perfect | Boy |
| Jovita | Joy | Girl |
| Joy | Joy, Happiness, Joyful, Pleasure | Unisex |
| Joyce | Youthful | Girl |
| Joye | Joy | Girl |
| Juanita | God is gracious | Girl |
| Jubal | River, Stream | Boy |
| Juda | Praised | Boy |
| Judah | Praised | Boy |
| Judd | Flowing down | Boy |
| Jude | Praised | Boy |
| Judi | Jewess, Woman of Judea | Girl |
| Judie | Jewess, Woman of Judea | Girl |
| Judith | Jewess, Woman of Judea | Girl |
| Judy | Jewess, Woman of Judea | Girl |
| Jules | Descended from Jupiter (Jove), Youth | Unisex |
| Juli | Descended from Jupiter (Jove), Youth | Girl |
| Julia | Descended from Jupiter (Jove), Youth | Girl |
| Julian | Descended from Jupiter (Jove), Youth | Boy |
| Juliana | Descended from Jupiter (Jove), Youth | Girl |
| Julianna | Descended from Jupiter (Jove), Youth | Girl |
| Julianne | Descended from Jupiter (Jove), Youth | Girl |
| Julie | Descended from Jupiter (Jove), Youth | Girl |
| Julienne | Descended from Jupiter (Jove), Youth | Girl |
| Juliet | Descended from Jupiter (Jove), Youth | Girl |
| Juliete | | Girl |
| Juliette | Descended from Jupiter (Jove), Youth | Girl |
| Julius | Descended from Jupiter (Jove), Youth | Boy |
| July | Descended from Jupiter (Jove), Youth | Girl |
| Julyan | Descended from Jupiter (Jove), Youth | Boy |
| June | Vital force | Girl |
| Junior | Young, A nickname for a boy having same name as his father | Boy |
| Juniper | A Name of the tree | Girl |
| Juno | Vital force | Girl |
| Justice | Fair, Just | Girl |
| Justin | Fair, Just | Boy |
| Justina | Fair, Just | Girl |
| Justine | Fair, Just | Girl |
| Justy | Fair, Just | Unisex |
| Justyna | Fair, Just | Girl |
| Kacey | Vigilant, Wakeful | Girl |
| Kacie | Vigilant, Wakeful | Girl |
| Kade | Round and lumpy | Boy |
| Kaden | Little battle | Boy |
| Kadence | Flow of Rhythm | Unisex |
| Kae | Lord | Boy |
| Kaelea | Slender | Girl |
| Kaelee | Slender | Girl |
| Kaety | Pure | Girl |
| Kaila | Slender | Girl |
| Kailee | Slender | Girl |