| Name | Meaning | Gender |
|---|
| Jonette | God is gracious | Girl |
| Joni | God is gracious | Girl |
| Jonie | God is gracious | Girl |
| Jonina | Dove | Girl |
| Jonna | God is gracious | Girl |
| Jonquil | Jonquil Flower | Girl |
| Jools | Descended from Jupiter (Jove), Youth | Unisex |
| Jordan | Flowing down | Unisex |
| Jordana | Flowing down | Unisex |
| Jordi | Flowing down | Girl |
| Jordie | Flowing down | Girl |
| Jordon | Flowing down | Unisex |
| Jordyn | Flowing down | Girl |
| Jorie | Pearl | Girl |
| Jorja | Farm worker, Farmer | Girl |
| Joscelin | Gaut | Girl |
| Josceline | Gaut | Girl |
| Joselyn | Gaut | Girl |
| Josepha | God shall add (a another son) | Girl |
| Josephine | God shall add (a another son) | Girl |
| Josette | God shall add (a another son) | Girl |
| Josie | God shall add (a another son) | Girl |
| Joss | Gaut | Unisex |
| Josslyn | Garnet (the gem), Gaut | Unisex |
| Josya | | Girl |
| Jovita | Joy | Girl |
| Joy | Joy, Happiness, Joyful, Pleasure | Unisex |
| Joyce | Youthful | Girl |
| Joye | Joy | Girl |
| Juanita | God is gracious | Girl |
| 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 |
| 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 |
| July | Descended from Jupiter (Jove), Youth | Girl |
| June | Vital force | Girl |
| Juniper | A Name of the tree | Girl |
| Juno | Vital force | Girl |
| Justice | Fair, Just | Girl |
| Justina | Fair, Just | Girl |
| Justine | Fair, Just | Girl |
| Justy | Fair, Just | Unisex |
| Justyna | Fair, Just | Girl |
| Kacey | Vigilant, Wakeful | Girl |
| Kacie | Vigilant, Wakeful | Girl |
| Kadence | Flow of Rhythm | Unisex |
| Kaelea | Slender | Girl |
| Kaelee | Slender | Girl |
| Kaety | Pure | Girl |
| Kaila | Slender | Girl |
| Kailee | Slender | Girl |