| Name | Meaning | Gender | Origin |
|---|
| Jonny | God is gracious | Boy | |
| Jonquil | Jonquil Flower | Girl | |
| Jonty | God has given | Boy | |
| Jools | Descended from Jupiter (Jove), Youth | Unisex | French |
| Jophiel | Beauty of God | Boy | Hebrew |
| Joram | God is exalted | Boy | Greek |
| Jordan | Flowing down | Unisex | Greek |
| 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 | |
| Josaphat | God has judged, Whom God judges | Boy | Greek |
| Joscelin | Gaut | Girl | |
| Josceline | Gaut | Girl | |
| Joselyn | Gaut | Girl | |
| Joseph | God shall add (a another son) | Boy | Greek |
| Josepha | God shall add (a another son) | Girl | |
| Josephine | God shall add (a another son) | Girl | French |
| Joses | Exalted | Boy | Greek |
| Josette | God shall add (a another son) | Girl | French |
| Josh | God is salvation | Boy | |
| Joshaphat | God has judged, Whom God judges | Boy | Hebrew |
| Joshawa | God is salvation | Boy | |
| Joshua | God is salvation | Boy | Hebrew |
| Josiah | Whom Jehovah heals | Boy | Hebrew |
| Josie | God shall add (a another son) | Girl | |
| Joss | Gaut | Unisex | |
| Josse | Lord | Boy | French |
| Josslyn | Garnet (the gem), Gaut | Unisex | |
| Jotham | God is perfect | Boy | Hebrew |
| Joy | Joy, Happiness, Joyful | Unisex | |
| Joyce | Lord | Girl | |
| Joye | Joy | Girl | |
| Juanita | God is gracious | Girl | Spanish |
| Jubal | River, Stream | Boy | Hebrew |
| Juda | Praised | Boy | |
| Judah | Praised | Boy | Hebrew |
| Judd | Flowing down | Boy | Medieval |
| Jude | Praised | Boy | Hebrew |
| Judi | Jewess, Woman of Judea | Girl | |
| Judie | Jewess, Woman of Judea | Girl | |
| Judith | Jewess, Woman of Judea | Girl | Hebrew |
| Judy | Jewess, Woman of Judea | Girl | |
| Jules | Descended from Jupiter (Jove), Youth | Unisex | Roman |
| Juli | Descended from Jupiter (Jove), Youth | Girl | |
| Julia | Descended from Jupiter (Jove), Youth | Girl | Latin |
| Julian | Descended from Jupiter (Jove), Youth | Boy | Roman |
| Juliana | Descended from Jupiter (Jove), Youth | Girl | Latin |
| Julianna | Descended from Jupiter (Jove), Youth | Girl | Roman |
| Julianne | Descended from Jupiter (Jove), Youth | Girl | Roman |
| Julie | Descended from Jupiter (Jove), Youth | Girl | French |
| Julienne | Descended from Jupiter (Jove), Youth | Girl | |
| Juliet | Descended from Jupiter (Jove), Youth | Girl | French |
| Juliette | Descended from Jupiter (Jove), Youth | Girl | French |
| Julius | Descended from Jupiter (Jove), Youth | Boy | |
| July | Descended from Jupiter (Jove), Youth | Girl | |
| Julyan | Descended from Jupiter (Jove), Youth | Boy | Roman |
| June | Vital force | Girl | |
| Junior | Young, A nickname for a boy having same name as his father | Boy | |